MC 3 Op Manual 7 9 10 Operating
User Manual: MC-3
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CPN – INSTROTEK, INC.
4057 Port Chicago Highw ay
Suite 100
Concord, CA 94520 USA
TEL: (925) 363-9770
FAX: (925) 363-9385
Website: w w w .instrotek.com
i
CAUTION
CPN nuclear gauges contain sealed sources of radioactive material for
measuring the density and moisture of construction materials. It is important
that you read this operating manual prior to using any nuclear gauge.
Prior to using any nuclear gauge, all gauge operators must receive radiation
safety and gauge use training from a nuclear gauge manufacturer, or another
qualif ied t r ainer .
All gauge operators must use nuclear gauges in compliance with the
regulations of their state or federal radiation control agency, as well as the
conditions of the radioactive material license issued to each company or
agenc y pos s es s ing nuc lear gauges .
CPN -InstroTek
4057 Port Chicago Highway, Suite 100
Concord, CA 94520 USA
Tel: 925-363-9770
Fax: 925-363-9385
ii
Table of Contents
Section 1 - General Information
Product Description ....................................................................................................... 1
CPN MC-3 PORTAPROBE® Features ......................................................................... 2
Functional Description................................................................................................... 3
Standard Equipment ..................................................................................................... 4
Specifications ................................................................................................................ 6
Dimensions/Shipping W eights............................................................................ 6
Performance ....................................................................................................... 6
Electrical ............................................................................................................. 7
Environmental .................................................................................................... 7
Radiological ........................................................................................................ 7
Definitions ..................................................................................................................... 8
CPN MC-3 PORTAPROBE® Inspection ....................................................................... 9
Section 2 - Operation
Learning to Use the CPN MC-3 .................................................................................. 11
Keyboard Functions .................................................................................................... 13
®
Configuring PORTAPROBE for Measurements ........................................................ 16
Standard Counts ......................................................................................................... 20
Taking a Test .............................................................................................................. 22
Units of Measurement ................................................................................................. 23
Calibration ................................................................................................................... 24
Edit Coefficients ............................................................................................... 24
Self Calibration ................................................................................................. 26
Data Logging ............................................................................................................... 28
Storing Test Results ......................................................................................... 28
Reviewing Test Results .................................................................................... 29
Operation Summary .................................................................................................... 30
Section 3 - Field Use
Asphalt Pavement ....................................................................................................... 31
Backscatter Measurements .............................................................................. 31
Percent Air Void Determination ........................................................................ 32
Thin Lift Overlays ............................................................................................. 33
Soils/Aggregates ......................................................................................................... 34
Transmission Measurements ........................................................................... 34
Moisture Measurements ................................................................................... 36
Over-sized Rock Correction ............................................................................. 36
Trench Testing ................................................................................................. 37
iii
Section 4 - Other Test Methods
Statistical Control ........................................................................................................ 38
Core Correlation .......................................................................................................... 38
Concrete Testing ......................................................................................................... 38
Control Test Strip ........................................................................................................ 39
Roller Compaction Evaluation ..................................................................................... 39
Section 5 - Maintenance
Clean and Lubricate Shutter Mechanism .................................................................... 40
Handle Assembly Inspection ....................................................................................... 41
L e a k T e st . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2
Charging Battery Pack ................................................................................................ 43
Storage ....................................................................................................................... 43
APPENDIX A
Display Messages and Prompts .................................................................................. 44
APPENDIX B
Troubleshooting Guide ................................................................................................ 45
APPENDIX C
Data Transfer .............................................................................................................. 47
CPN MC-3 Dump Software ......................................................................................... 50
APPENDIX D
Accessories ................................................................................................................. 51
APPENDIX E
Conversion Factors ..................................................................................................... 52
GLOSSARY ....................................................................................................................... 53
INDEX .................................................................................................................................. 54
iv
Section 1 - General Information
Product Description
The CPN MC-3 PORTAPROBE® is a rugged, microprocessor-based instrument that measures the
®
density and moisture of in-place soil and construction materials. The PORTAPROBE provides fast
and accurate measurements, rapidly calculates and converts the data to English or metric
engineering units, and displays the results on a liquid crystal display (LCD).
®
The PORTAPROBE® complies with the following ASTM standard test methods:
D 2922 - Density of Soil and Soil Aggregate in Place by the Nuclear Method
D 3017 - Moisture Content of Soil and Soil Aggregate by the Nuclear Method
D 2950 - Density of Bituminous Material in Place by the Nuclear Method
D 6938 – Implace Density and W ater Content of Soil & Soil Aggregate by Nuclear Method
The PORTAPROBE®, depending upon the model, measures material density in 1 or 2 inch (25 or 50
mm) increments to depths of 8 or 12 inches (200 or 300 mm). Moisture measurement averages 6
inches (150 mm) depth.
The keypad of the PORTAPROBE® allows the operator to enter target maximum density values and
density and moisture calibration biases. Other keys permit the operator to record and recall test
results and transfer records to either a printer or a computer.
Proper use of the CPN MC-3 PORTAPROBE® will impose no radiation hazard on the operator.
However, a potential danger does exist if the equipment is improperly used. Operators should read
and understand the literature covering radiation safety, and attend a radiation safety and applications
training course offered by the manufacturer or other licensed instructor.
1
CPN MC-3 PORTAPROBE® Features
• Simultaneous, direct readout of all test data and results on an easy-to-read, liquid crystal display:
Total (wet) density
Total moisture
Dry density
% Compaction - total (wet) or dry
M oi s t ur e c ont e nt ( % )
% Air voids
Record and test number
Time and date of test
Maximum values: wet density, dry density and bulk specific gravity
Density and moisture biases
• Memory storage and recall of up to 200 test results by record number
• Serial interface to personal computer or printer
• Operator-selectable time or precision of test
• Programmable maximum values from laboratory compaction tests
• Easy-to-use keyboard functions for all measurement parameters
• Rechargeable NICAD battery pack; up to 600 tests between charges
• Three testing modes: normal, thin layer calculation, and trench wall correction
• Self-calibration (self-coefficient determination)
2
Functional Description
®
The CPN MC-3 PORTAPROBE® operates by emitting radiation from two safety-sealed radioactive sources:
- Cesium-137, a gamma emitter for density measurement
- Americium-241:Beryllium, a neutron emitter for moisture measurement.
To determine density, the Cesium-137 source emits gamma radiation into the test material. Some of the gamma
radiation will pass through the material and be detected by the Geiger-Mueller detectors located within the
CPN MC-3. A material of low density will give a high count per time of test. A material of high density will
give a low count for the same period of time, as the high-density material absorbs more gamma radiation.
To determine moisture content, the Americium-241:Beryllium source emits neutron radiation into the
test material. The high-energy neutrons are moderated by collision with hydrogen atoms in the
moisture of the material. Only low-energy, moderated neutrons are detected by the Helium-3
detector. A material that is wet will give a high count per time of test. A material that is dry will give a
low count for the same period of time.
3
Standard Equipment
Each CPN MC-3 is provided with a durable plastic shipping case and the items listed below. There
are no special instructions for unpacking the CPN MC-3 Portaprobe ®. It comes fully assembled.
Item
Part Number
®
CPN MC-3 PORTAPROBE®
C-116122
Type A Shipping/Storage Case
C-704467
Standard Block
C-701423
Guideplate
C-200050
Drill Pin with extractor
C-100035X
Padlock and Keys
C-700472
Battery Charger, 115/230 VAC
C-400950.1
Allen Head (Hex Drive) W rench
C-700760
Operating Manual
Leak Test Certificate
4
®
Figure 1-1. CPN MC-3 PORTAPROBE® Standard Equipment
5
Specifications
Dimensions/Shipping Weights
Model
CPN MC-3 (gauge only)
CPN MC-3 (with carrying case)
Weight
31 lbs/14.3 kgs
80 lbs/36 kgs
Length
14 in/356 mm
25.6 in/650 mm
Width
9 in/229 mm
15.4 in/391 mm
Height
22 in/559 mm
16.1 in/409 mm
Performance
Functions
In-place density and moisture measurements.
Density Range
70 to 170 pcf (1.12 a 2.73 g/cm3)
0 to 40 pcf (0 a 0.64 g/cm3)
Moisture Range
Precision
[ one minute test at 125 pcf (2.00 gm/cm3) density; 10 pcf (0.24 g/cm3) moisture ]
Backscatter (BS)
±0.80 pcf (0.013 g/cm3 )
Asphalt-Concrete (AC)
±0.50 pcf (0.008 g/cm3 )
Transmission(6 in)
±0.25 pcf (0.004 g/cm3 )
Moisture
±0.25 pcf (0.004 g/cm3 )
BS Chemical Error
±1.00 pcf (0.016 g/cm3 )
Transmission Chemical Error
±0.75 pcf (0.012 g/cm3 )
Surface Roughness Error
[ 0.05 in (1.3 mm); 100% void ]
Backscatter (BS)
-3.00 pcf (-0.048 g/cm3 )
0.05 pulg (1.3 mm);
Asphalt-Concrete (AC)
-6.0 pcf (-0.0096 g/cm3 )
100% void
Transmission(6 in)
-0.5 pcf (-0.008 g/cm3 )
Moisture
-0.7 pcf (-0.011 g/cm3 )
Depth of Measurement
Backscatter (BS)
Transmission
Moisture
3.0 in (7.6 cm ).
2 to 8 in (5.1 to 20.3 cm); optional 2 to 12 in (5.1 to 30.5 cm)
6 in (15.2 cm)
Display
Sunlight readable high resolution LCD display, with 120°
viewing angle
Counting Time
Operator - selected precision (± pcf or g/cm ) or time of test
6
3
Specifications
Performance
C a lib r a t ion
Factory calibration; operator entered or automatic
determination of calibration coefficients
Units of Measurements
Operator selectable: pcf or g/cm³
Memory Storage
Up to 200 readings of all displayed data
Data Interface
Rs-232-C for upload to computer or printer (300 to 9600 baud)
Electrical
Power Source
Internal battery pack (8 welded AA size NICAD batteries), 5 Wh.
Battery Life
500 to 1000 charge-discharge cycles
Power Consumption
12mA, average (based on 600+ 30-sec. counts)
Charging Time
14 hours at C/10 via charging unit
Environmental
Operating Temperature
Ambient: 32º to 150ºF (0º to 66ºC)
Hot substrate Surface Temperature: Up to 350ºF (177ºC) for 15 min.
Storage Temperature
-4º to 140ºF (-20º to 60ºC)
Humidity (non-condensing)
95%
Radiological
Gamma Source
370 MBq (10 mCi) Cesium-137
Neutron Source
1.85 GBq (50 mCi) Americium-241:Beryllium
Encapsulation
Double-sealed capsule, CPN-131
Shipping Requirements
Radioactive Material, Special Form UN 3332, Transport Index
0 .4, Yellow II Label, USA DOT 7A, Type A Package
Special Form Approval
USA/0356/S and CZ/1009/S or USA/0627/S and USA/0634/S
An NRC Agreement State license is required for domestic use. Contact CPN - InstroTek for assistance in
obtaining training for a license.
7
Definitions
CHEMICAL COMPOSITION ERROR:
The error due to the variation in photon scattering and absorption coefficients for limestone and
granite. Most natural soils and aggregates are between these limits.
SURFACE ROUGHNESS ERROR:
The error due to surface voids, determined by measuring the density or moisture content of a smooth
surfaced standard and repeating the measurement with the instrument base elevated 0.05 inch above
the standard.
DEPTH OF MEASUREMENT:
The depth through which 95% of the counted photons and thermal neutrons pass before reaching the
detectors.
PRECISION (Pr):
The statistical precision of the gauge computed at the 68.3% confidence level (± 1 standard
deviation). It states that the repeatability of the gauge is such that 68.3% of repeated measurements
on the same site will fall within the average ± precision value.
Precision (Pr) =
actual accumulated counts
slope of the calibration curve
The total density and total water precision values are calculated as follows:
Pr, Dwet or Pr, H2O =
actual accumulated counts
slope of the calibration curve
The dry density precision value is calculated as follows:
Pr, Dry =
Pr, Dwet 2 + Pr, H2O 2
CPN -InstroTek reserves the right to change equipment specifications and/or design to
meet industry requirements or improve product performance.
8
CPN MC-3 PORTAPROBE® Inspection
To familiarize yourself with the CPN MC-3, perform
the following review.
®
1. Remove PORTAPROBE® from shipping case and
place on solid flat surface, such as a concrete
floor.
2. Examine the keyboard, display screen, handle, and
guidetube.
3. Examine the bottom of the unit. Behind the
aperture in the cleanout plate is a carbide
shutter block which is spring-mounted and
automatically opens and closes when the source
rod is lowered and retracted. A brass scraper
ring around the opening cleans the source rod
as it is retracted.
NOTE
A radioactive source is located in the
source rod behind the shutter block. Do
not touch the source rod or place
yourself in front of unshielded source
rod.
9
CPN MC-3 PORTAPROBE® Inspection
4. Examine the rear panel.
1. Reset Pushbutton. The power is
normally ON. Holding the
pushbutton depressed for 5
seconds or longer and then
releasing it will act as a master
reset. Master reset is only
necessary if the gauge locks up.
2. Battery Charger Jack.
3. RS-232-C Connector. Port for uploading data
to printer or computer.
5. Examine the guide tube assembly.
1. Guide Tube.
2. Release or Thumb Pin.
3. Probe Handle.
4. Locking Recesses.
5. Source Rod (gamma source at bottom).
6. Lock Hole
10
Section 2 - Operation
Learning to Use the CPN MC-3
1. Use key to unlock handle. Pull back release (thumb) pin, and set handle to BS position.
Instrument is now set up to perform an asphalt or concrete measurement.
NOTE
The display will temporarily switch to
the counts per minute (cpm) screen if a
test count is taken when the rod is in
the SAFE position. It will automatically
return to the density screen when a
reading is taken with the rod in a valid
depth.
2. Press CLEAR key.
Screen displays results of factory test
measurement
made with CPN MC-3 prior to
shipment.
DEPTH OF MEASUREMENT
D normal mode
T
thin layer mode
W trench wall mode
S
strata mode (optional)
DENSITY UNIT
gcc - GRAMS PER CUBIC
CENTIMETER (METRIC)
pcf - POUNDS PER CUBIC
FOOT (ENGLISH)
DENSITY
PRECISION
PERCENT OF
MAXIMUM
TARGET MAXIMUM
Mw = MAXIMUM WET
Md = MAXIMUM DRY
Av = AIR VOID
WET and AIR VOID MAXIMUMS
IN WET COLUMN.
DRY MAXIMUM IN DRY
COLUMN.
NUMBER OF
READINGS LOGGED
INTO THIS RECORD
RECORD
NUMBER
DATE OF LAST MEASUREMENT
( MONTH/DAY )
TIME OF LAST MEASUREMENT
( HOURS/ MIN )
R1
-2
0925 1325
DaBS ET00:30 T00:30
pcf wet
h2o
dry
Dn 147.5 10.75 136.7
Pr
0.76 0.28 1.04
%
7.68 91.13
Md
150.0
Bi
0.0
0.0
lob
BIAS
DENSITY BIAS
MOISTURE BIAS
ET = ELAPSED TIME IN
MIN:SEC AFTER END OF
COUNT, OR
RT = REMAINING TIME
DURING COUNTDOW N
T = PRESET COUNTING TIME
( MIN:SEC )
P = PRESET WET PRECISION
( DENSITY UNITS )
NOTE: ‘ * ‘ IN WET OR
H2O COLUMNS
INDICATE OUT-OFSPEC Xi RATIO.
See page 20
BATTERY STATUS
lob = BATTERIES 75% DISCHARGED
chg = BATTERIES CHARGING @ C/10
blank = BATTERIES O.K.
11
Learning to Use the CPN MC-3
3. Press START to begin a test. CPN MC-3 starts
30-second test count and, during countdown,
displays:
DATE ( MONTH/DAY )
UPDATES AT START
OF COUNTDOWN
REMAINING TIME
DEPTH OF MEASUREMENT
UPDATES AT START OF
COUNTDOWN
R1
-1
0925 1326
DaBS RT00:30 T00:30
pcf
wet
h2o
dry
Dn
Pr
NORMAL
%
Md
150.0
Bi
0.0
0.0
TIME ( HOURS/MIN )
UPDATES AT START
OF COUNTDOWN
COUNTING MODE
DISPLAYED DURING
COUNTING PERIOD
RT (remaining time) counts down each second
until counting period is complete. At end of count,
CPN MC-3 beeps twice and screen displays
results:
ELAPSED TIME
OF TEST
R1
-1
0925 1326
DaBS ET00:30 T00:30
pcf
wet
h2o
dry
Dn 147.5 10.75 136.7
Pr
0.76 0.28 1.04
%
7.86 91.13
Md
150.0
Bi
0.0
0.0
The screen will shut off in 60 seconds
If no key is pressed.
12
NEW DATA
DERIVED FROM
TEST COUNT
Keyboard Functions
Figure 2-1 shows the keyboard of the PORTAPROBE®
Key
Function
START
Starts a count.
STEP
Acts as shift key.
Steps cursor to next parameter or display.
CLEAR
Clears operator-entered data if pressed before ENTER
key. Stops in-progress measurements. Displays previous
display or (from a blank screen) most recent
measurement.
ENTER
Stores data in memory.
Steps to next display.
ID
Sets record identification for logging data.
RECALL
Displays stored records from logging memory.
PRINT
Displays PRINT menu.
®
Figure 2-1. CPN MC-3 PORTAPROBE® Keyboard
13
Keyboard Functions
14
Key
Function
%COMP
Selects percent compaction to be calculated:
Mw: Maximum wet density.
Md: Maximum dry density.
Av: Air void ratio.
MAX
Prompts for entering the maximum compaction values in pcf or
g/cm3.
D BIAS
Prompts for entering moisture bias value (+ or - pcf or g/cm3).
M BIAS
Prompts for entering moisture bias value (+ or - pcf or g/cm3).
TIME
Prompts for setting counting to:
Fixed time or constant precision mode.
New time or precision value.
UNIT
No action.
STD
Displays density and moisture standard counts and prompts for
new standard counts.
Takes new standard counts.
CALIB
W hen Fixed Depth has been selected, prompts for setting the
depth.
Keyboard Functions
The following functions are initiated by pressing the STEP key and holding it pressed while pressing a
second key (i.e. the STEP key acts as a shift key).
Key
Function
STEP + TIME
Prompts for setting realtime clock (time/date).
STEP + UNIT
Displays menu to select between English (pcf and inches) or
metric (gcc and mm) measurement units and select between
density screen and counts per minute (cpm) screen.
STEP + CALIB
Displays menu to select displaying/entering coefficients, selfcalibration, or setting fixed or automatic depth of measurement.
(See Appendix B: Troubleshooting Guide.)
STEP + START
Displays measurement mode menu to select: Normal, Thin
Layer, Trench W all, Strata (optional).
STEP + CLEAR
Master clear. Restores main screen display directly from any
other display.
ID, then
STEP + ID
Clears entire record space of stored data.
STEP + ENTER
Displays monitor program, information used by a CPN service
technician.
15
Configuring PORTAPROBE® for Measurements
The CPN MC-3 PORTAPROBE® displays the following direct measurements after all tests.
Wet or total density (pcf or gm/cm3).
1. Dn wet:
2. Dn H2O:
Total moisture (pcf or gm/cm3).
3. Dn dry:
Dn wet - Dn H2O (pcf or gm/cm3).
4. % H2O:
(Dn H2O / Dn dry) x 100
R1
-1
0925 1326
DaBS ET00:30 T00:30
pcf
wet
h2o
dry
1
2
3
Dn
Pr
4
%
Md
Bi
The operator may enter target maximum values determined by standard laboratory tests (ASTM or
comparable) before or after a test is taken.
5. Mw: The maximum wet density of a soil-aggregate or bulk specific gravity of a paving mixture in
pcf or gm/cm3 (ASTM D 1188).
6. Av:
The theoretical maximum specific gravity of a paving mixture in pcf or gm/cm3 (ASTM D
2041).
7. Md: The maximum dry density of a soil-aggreagte in pcf or gm/cm3 (ASTM D 1557).
R1
-1
0925 1326
DaBS ET00:30 T00:30
pcf
wet
h2o
dry
Dn
Pr
%
5 or 6
4
Md
Bi
16
Configuring PORTAPROBE® for Measurements
The CPN MC-3 PORTAPROBE® will now calculate and display relative (%) compactions.
For asphalt pavements and soils using total or wet maximum values:
8. % Mw = ( Dn wet / Mw ) x 100
For asphalt pavements using maximum specific gravity values:
9. % Av =
Av - Dn wet
x 100
Av
For soil/aggregates using dry maximum values:
10. % Md = ( Dn dry / Md ) x 100
R1
-1
0925 1326
DaBS ET00:30 T00:30
pcf
wet
h2o
dry
Dn
Pr
8 or 9
1
%
0
Md
Bi
The operator may enter density and moisture bias values as needed.
11. ± density value (pcf or g/cm3).
12. ± moisture value (pcf or g/cm3).
R1
-1
0925 1326
DaBS ET00:30 T00:30
pcf
wet
h2o
dry
Dn
Pr
%
Md
1
1
Bi
17
Configuring PORTAPROBE® for Measurements
The following parameters can be configured for the CPN MC-3 PORTAPROBE® to meet your needs.
Parameter
Factory
Configuration
Range
units
pcf
pcf, g/cm3 or cpm.
time or precision
T01:00
user selectable mode: time
or precision, and value:
±pcf or g/cm3.
% compaction
Md
Mw, Md, or Av
maximums
Mw
Md
Av
150.0
150.0
150.0
0 to 999.9
biases
density
moisture
0.0
0.0
+99.9 to -99.9
counting mode
normal
normal, thin
trench wall
layer,
or
Enter the CPN MC-3 PORTAPROBE® parameters according to the following instructions.
Action
Result
UNITS Parameters
1. Press STEP + UNIT.
Displays menu to select units.
2. Press ENTER
Toggles units between pcf and g/cm3, displaying
current selection on screen.
3. Press CLEAR.
Displayed units selected.
.
4. Press STEP.
5. Press ENTER.
6. Press CLEAR.
18
Toggles between density and counts-per-minute
(cpm) screen, displaying current selection on
screen.
Display option selected.
Configuring PORTAPROBE® for Measurements
Action
Result
TIME and PRECISION Parameters
1. Press TIME
Cursor moves to time field on screen.
2. Press STEP to toggle between Time or precision mode, as toggled, is displayed on
screen.
time and precision.
3. Key in new time or precision Value is displayed and stored (any previous value
is replaced).
value and press ENTER.
COMPACTION % and MAXIMUM Parameters
1. Press % COMP
Compaction field rolls through Mw, Av, and Md.
Continue pressing until desired maximum is displayed.
2. Press MAX.
Prompts for new maximum value.
3. Key in maximum value and press Value displayed and stored (any previous value is
replaced).
ENTER.
DENSITY and MOISTURE BIAS Parameters
1. Press D BIAS
Cursor moves to first digit in density bias field.
2. Key in density bias value and Value is displayed and stored (any previous value is
replaced).
press ENTER.
3. Press M BIAS.
Cursor moves to first digit in H2O bias field.
4. Key in moisture bias value and Value is displayed and stored (any previous value is
replaced).
press ENTER.
Date and Time Reset
1. Press STEP + TIME.
Screen displays date and time and prompts for entering
the year.
2. Key in each prompted value and Each value is stored; date and time updated.
press ENTER.
3. Press START.
Clock begins again.
COUNTING MODE selection
1. Press STEP + START.
Displays menu to select counting mode desired: normal,
thin layer, or trench wall.
2. Press STEP.
Cursor moves through counting mode options. Continue
pressing until desired option is prompted.
3. Press ENTER
Counting mode is selected.
19
Standard Counts
®
Because the radioactive sources in the PORTAPROBE® decay slowly over time, the user must
periodically take a standard count on the reference standard provided. W hen this is done, the
previous standard count is replaced and the CPN MC-3 program uses the new standard to calculate
the field count/standard count ratio to compensate for source decay.
"Xi" is displayed and signifies the chi-squared distribution of the counts. This is the ratio of the actual
distribution of the counts compared to the expected distribution. A ratio near 1.0, and small changes
between previous and new counts, indicate that the CPN MC-3 is working properly.
W hile standard counts need only be taken monthly to account for source decay, it is recommended
that a new standard be taken daily to check "Xi" and changes in counts. The Xi ratio should be
between 0.75 and 1.25, and the change between the present and previous standard counts should be
smaller than the square root of the average count (1 standard deviation). This will verify the
®
performance of the PORTAPROBE every day of use. If the Xi value is outside of expected limits,
repeat the standard count. If the statistics are again poor, consult the Troubleshooting Guide
(Appendix B).
Standard Count Procedure
Result
Action
®
1. Set the PORTAPROBE® on the
standard count block. W ith the thick
standard block (3 inches), take a
standard count with the block on a
dense material (compacted soil,
asphalt or concrete). W ith a thin
standard block (2 inches) take it on
the shipping case.
NOTE
®
Locate the PORTAPROBE® at
least 15 ft. (4.5 m) from any
other nuclear gauge and at
least 5 ft.
(1.5 m) from
other objects.
Figure 2-2. Standard Count Procedure
20
Standard Counts
Action
Result
®
2. Set PORTAPROBE® handle to
SAFE and press STD.
Screen displays existing standard count data:
EXPRESSED IN COUNTS PER
MINUTE (CPM)
PREVIOUS
STANDARDS
CURRENT STANDARDS
N = NUMBER OF
SAMPLES
DATES OF MOST RECENT
STANDARD COUNT
YEAR/MONTH/DAY
cpm
wet
h2o
Prv 22027
16367
Std 22080
16492
Xi
.93
1.05
N
256
256
Dat 940825 940825
START new standard
CLEAR exit
3.Press START key.
CONTINOUSLY
UPDATED DURING
TAKING OF NEW
STANDARDS
PROMPTS FOR
NEXT COMMAND
®
PORTAPROBE® starts a standard count of 256 1second samples. As each sample is taken, the
sample number from 1 to 256 is displayed. A
standard count takes approximately 4.4 minutes.
NOTE
To terminate the count and exit while
the standard count is in progress,
press CLEAR.
To stop the count early, press STEP
(count is terminated and values
stored).
At the end of the count, the CPN MC-3 displays and
stores the new standard count data, replacing
previous values.
21
Taking a Test
To take a field test, perform the following:
Action
Result
1. Configure the CPN MC-3 (see
Configuring PORTAPROBE® for
Measurements instructions).
CPN MC-3 configured.
2. Prepare the site to be tested (see site
prepara tion instructions in Field Use
section).
Site prepared for testing.
3. Set the CPN MC-3 on the site to be
tested and set the handle to the
position (depth) in which the test will
be performed.
PORTAPROBE® prepared for testing.
4. Press START to commence field test.
PORTAPROBE® starts taking 1-second sample
counts and display counts down. At end of count,
CPN MC-3 beeps twice and displays test results on
screen.
®
NOTE
The depth of measurement will
only be updated after a count is
started.
Typical transmission test display:
R1 -1
0925 1326
Da8 ET00:30 T00:30
pcf
wet
h2o dry
Dn 147.5 10.75 136.7
Pr
0.76 0.28 1.04
%
7.86 91.13
Md
150.0
Bi
0.0
0.0
One of three testing modes can be selected:
Normal:
for use on most soil/aggregates and pavements thicker than 2.5 inches (76 mm). (See
above.)
Thin Layer: for use on asphalt pavement overlays of 1.0 to 2.5 inches (25 to 64 mm) thickness.
(See Thin Lift Overlays in the Field Use section.)
Trench Wall: to eliminate counting errors caused by trench walls when testing backfill in trenches
or excavations less than 30 inches (762 mm) in width. (See Trench Testing in the Field
Use section.)
22
Units of Measurement
From pcf (pounds per cubic foot) to gcc (grams per cubic centimeter)
From gcc (grams per cubic centimeter) to pcf (pounds per cubic foot)
To Change Units
Action
Result
1. Press STEP + UNIT
Screen displays units menu.
Units
Unit: pcf
Screen: Density
STEP & ENTER choice
2. Press ENTER one or more
times.
3. Press CLEAR.
To
Change
Results
Display alternates between pcf and gcc units.
Units displayed is now selected. Screen returns to READY.
Screen From density (pcf or gcc) to cpm (count per minute
From cpm (counts per minute) to density (pcf or gcc)
Action
Result
1. Press STEP + UNIT
Screen displays units menu, as above.
2. Press STEP.
Cursor moves to screen result options.
3. Press ENTER one or more
times.
Display alternates between density and cpm screen
results. If the cpm screen has been selected, the
CPN MC-3 will count and display results as in the
example:
R101 -2
0630 0712
Da2 ET00:30 T00:30
pcf wet
h2o
Ct 21840 4738 cpm
Xi 0.95
1.01
4.Press CLEAR.
Screen result displayed is now selected. Screen
returns to READY.
23
Calibration
®
Each CPN MC-3 PORTAPROBE® is calibrated at the CPN factory. A typical computer printout of the
calibration data is shown in Figure 2-3. If you require a different calibration, perform the following
steps.
CPN,-Instrotek
CALIBRATION
SERIAL NO: 2103
MODEL: MC-3
DENSITY STANDARD COUNT: 36310
CALIBRATION DATE: 940712
Figure 2-3. Computer Calibration Printout
DATE: 940712
-----COUNT AT-------DEPTH 107.2 1 33.6 164.3 --- A -------- lb / ft^3 ------
--- B ---
-- C ---
BS
AC
2
4
6
8
10
12
67.52434
81.13358
87.68365
66.12905
51.22988
41.4207
34.26359
29.44298
.13393
.12311
-.14113
.01882
.07577
.08366
.07383
.07024
24868
49236
120314
109341
82174
53821
32612
19205
18698
37044
87758
74293
51398
30680
17447
10033
13812
26900
60185
47628
29800
16683
9188
5507
1.88428
3.56517
9.45947
11.98014
13.75438
14.1178
14.0623
12.72889
A
WHERE: DENSITY IN lb / ft^3 = B * Ln(---------)
R-C
COUNT
R = RATIO = --------------STD CNT
MOISTURE STANDARD COUNT: 10610 DATE: 940712
CALIBRATION DATE: 940712
---COUNT AT---0.0 38.0
--- lb / ft^3 --494
6634
--- A ---
--- B ---
68.847
2.62218
WHERE: MOISTURE IN lb /ft^3 = (A * R) - B
Edit Coefficients
The wet density and H2O coefficients allow the operator to edit (view/change/enter) density and
moisture calibration coefficients. W rite down factory calibration coefficients before overwriting with
new ones in the CPN MC-3 so they can be reentered later.
Action
Result
1. Press STEP + CALIB.
Screen displays calibration menu with cursor
prompting wet coefficients:
Calibration
wet coefficients
h2o coefficients
wet selfcal
h2o selfcal
Depth: Auto
STEP & ENTER choice
24
Calibration
Action
Result
2. Press ENTER.
CPN MC-3 displays W et calibration screen with
cursor prompting depth field (BS initially).
3. Press STEP until desired depth and
calibration
Depths field rolls through BS, AC, 2, etc. (Current
coefficients are displayed for each depth), example:
Wet cal
2 in
A 10.65422
B 81.63265
C -.16853
STEP & ENTER depth
CLEAR twice to exit
4. Press ENTER.
Cursor moves to A coefficient field and prompts for
entry of new value.
5. Enter the A coefficient value and
press ENTER. Pressing ENTER will
store the current value and a new
value is not entered.
Value displayed in A coefficient field and stored.
Cursor moves to B coefficient field and prompts for
entry of new value.
6. Repeat step 5 for B and C
coefficients.
B and C coefficient values are displayed and stored.
Cursor then moves to top of screen and prompts for
next depth.
7. Repeat steps 3 through 6 for each
depth.
W et calibration coefficients are entered in
®
PORTAPROBE memory.
8. Press CLEAR twice to exit W et
calibration coefficients screen.
Calibrations
prompting.
9. Press STEP to move
field.
Cursor prompts H2O coefficients.
10. Press ENTER.
cursor H2O
menu
is
displayed
with
cursor
H2O calibration coefficients screen is displayed.
Cursor prompts for entry in the A coefficient field.
h2o cal
A 64.26693
B 4.78088
pcf
pcf
Enter coefficients
CLEAR twice to exit
Calibration
25
Action
Result
11. Enter A coefficient value and press
ENTER.
Value displayed in A coefficient field. Cursor
moves to B coefficient field and prompts for entry
of new value.
12. Enter B coefficient value and press
ENTER.
Value displayed in B coefficient field. H2O
calibration coefficients are entered in CPN MC-3
memory and calibration menu is displayed.
13. Press CLEAR twice to exit H2O
calibration coefficients screen.
Calibration
prompting.
14. Press CLEAR to return to main
menu.
Main screen is displayed.
menu
is
displayed
with
cursor
Self Calibration
The wet selfcal and H2O selfcal options allow the operator to calibrate the CPN MC-3 on a set of
three standards of known density (low, intermediate, and high) and two standards of known
equivalent moisture (low and high). Calibration coefficients are automatically computed and stored in
the CPN MC-3.
Action
Result
1. Take a standard count.
2 Press STEP + CALIB.
Screen displays calibration menu with cursor
prompting wet coefficients.
3. STEP to wet selfcal, then ENTER.
Screen displays option: create a new calibration or
edit old calibration data.
NOTE
Selecting the Create new
calib option will erase the
previous calibration counts.
Wet Selfcal
Last cal: 94-08-12
Create new calib
Edit old calib data
STEP & ENTER choice
4. Press ENTER to create a new
calibration and move to step 6, or
move to step 5 to edit calibration
data.
Calibration
26
Action
Result
5. Press STEP, then ENTER to edit old
calibration data. Selecting “edit”
retains previous calibration counts
but allows one or more of them to be
changed.
The existing density values of three wet density
calibration blocks or two H2O density calibration
blocks will be displayed. For example:
Wet Selfcal
Block Weights
Low: 107.2
Med: 133.6
High: 164.3
Key weight & ENTER
6. The wet density of H2O density block
values may be left unchanged by
pressing ENTER on each value or
keying in a new value followed by
ENTER.
The CPN MC-3 will then display the density value
of one of the calibration blocks and the last count
for the selected depth.
Wet Selfcal
107.2 pcf BLOCK
12 in
19448 cpm
Position Handle
STEP to roll block
START to count
or enter a value
7. Press STEP to select or change the
calibration block density. Move the
source rod to the next desired depth.
Press START to take a calibration
count (automatically four minutes).
W hen all three blocks have counts for a depth, the
CPN MC-3 will compute the coefficients for that
depth. W hile computing, a term will be displayed
which will reduce to a small number before the
gauge accepts the solution.
If prior calibration data is known, place
the gauge in the FIXED Depth Mode via
the STEP+CALIB menu and follow the
above sequence except press "-" to
advance to a new depth and key in the
count data as appropriate.
8. W hen the coefficients are displayed,
press ENTER to accept them or
CLEAR to abort and start over.
27
Data Logging
The CPN MC-3 PORTAPROBE® can log up to 200 tests in record numbers chosen by the operator.
The information can be reviewed on the display screen at a later time or transferred to a computer or
printer.
Storing Test Results
Action
Result
1. Pick a record number between 0
and 65535.
2. Press ID, then enter record number
chosen. Entering a previously used
record number allows user to append
test results to end of that record. If
no number is picked, the previous
record will be used.
CPN MC-3 sets up record number, or positions
user at end of existing record.
3. After a test, press ENTER to store
contents of main test screen. If a
reading has already been stored
®
PORTAPROBE will abort storage
and await another command.
Test results are stored in new record or appended
to existing record. Number-of-tests counter on
screen changes. CPN MC-3 beeps twice and
displays RECS FULL when record space is full.
4. To clear entire record space, first
review and print out stored data (see
Data Transfer section), press ID and
then hold down STEP and press ID.
Record space and site numbers are all erased.
Data that has been erased cannot be recovered
from PORTAPROBE®. CPN MC-3 beeps twice and
displays RECS EMPTY.
28
Data Logging
Reviewing Test Results
Action
Result
1. Press RECALL. User can now move
to next record with STEP, but not to
next test within record
.
2. Enter desired record number, then
press ENTER. If first record
displayed is desired, press ENTER to
recall results within record.
Because a test may be stopped before completion
by the operator, the TIME/PRECISION value is
omitted.
3. Move from test to test within record
with STEP.
Test results are displayed in order they were
taken. At the end of a record, STEP moves user
to next record.
User can now move to next record with STEP, or
to any record by entering record number and
pressing ENTER.
User has left RECALL mode.
4. To move from within a record to the
next record, press CLEAR once.
5. To return to main screen (most
recent results) from the first test in a
record, press CLEAR once. To return
from a test within a record, press
CLEAR twice.
User is now in desired record and first test result
is displayed.
29
Operation Summary
To take a Count
Standard Count
Field Count
Thin Layer Test
Trench Test
Display last reading
handle in SAFE position
STD, START
early finish
STEP
abort
CLEAR
handle in desired depth
START
STEP + START, then STEP to desired counting mode, ENTER, and follow instructions
on display
CLEAR
To P r ogr a m
Time/Precision
% Compaction
Maximum
Density bias
Moisture bias
Units
TIME (T), xxxx (min/sec)
or TIME, STEP (P),xx.xxx (pcf or gcc)
Press to display compaction calculation
% CO M P
Mw: W et/wetmax x 100
Md: Dry/drymax x 100
Av: (Avmax - wet)Avmax x 100
MAX, xxx.x, ENTER
D BIAS, xxx.x, ENTER
M BIAS, xxx.x, ENTER
units menu displayed
STEP + UNIT
selects units or screen display
STEP
toggles units between pcf and gcc, and screen
ENTER
between density and counts
display units selected
CLEAR
Record
Operation
Clear memory
Identify site
Store last reading
ID, STEP + ID
ID, xxxxxx, ENTER
ENTER
Display log
RECALL, xxxxxx, ENTER
or STEP...STEP, ENTER, then STEP to view readings within a site number
display screen format
PRINT, ENTER
data compressed and separated by commas
PRINT, STEP, ENTER
Printer dump
Computer dump
stores last reading into record once after each
START, up to 200 readings per site number, 200
readings maximum
Miscellaneous
Real time clock
Display counts/min
follow prompt to set date/time
repeat to return to nomal display
Calibrate
STEP + TIME
STEP + UNIT, STEP,
ENTER, CLEAR
STEP + CALIB
Depth override
depth mode
set fixed depth
Abort (one level)
Abort (master)
STEP + CALIB, STEP...ENTER
CALIB, xxx, ENTER
CLEAR
STEP + CLEAR
toggles display between fixed or auto mode
fixed depth entered
clear entry, abort, stop
clears to most recent reading on screen
30
select choice from calibration menu and follow
instructions on display
Section 3 - Field Use
Asphalt Pavement
Backscatter Measurements
®
The CPN MC-3 PORTAPROBE® has two density modes of operation: (1) backscatter (BS and AC
surface settings) and (2) transmission (depth settings). The backscatter settings provide nondestructive tests and are most often used for asphalt and concrete pavements where drilling a
transmission hole is not feasible.
CPN MC-3 handle set to BS (backscatter)
position. Raised or collimated source position
blocks shallow photon path to provide effective
deeper readings and minimize surface roughness
effect. Measures density to a depth of 2.8 in (71
mm). Typically used on pavements thicker than
3.0 in (76 mm).
CPN MC-3 handle set to AC (asphaltic concrete)
position. Source flush wth surface. Measures density
to a depth of 2.0 in (51 mm). Typically used on thin
pavement overlays.
31
Asphalt Pavement
Backscatter Measurements
Density measurements are performed to determine the compaction of asphalt pavements. This type
of measurement is made with the CPN MC-3 set in either the AC or BS position, depending on the
thickness of the asphalt (see table below).
P r obe
Position
Type Asphalt
Application
Maximum
Measurement Depth
(95% return)
AC
thin lift overlays; surface or
wearing course
2.0 in (51 mm)
BS
asphalt base or final mat if 3.0 2.8 in (71 mm)
in
(76 mm) or greater thickness.
To obtain accurate measurements, the
asphalt sur- face must be flat and, if it
contains voids, must first be prepared with
a filler of #20 or #30 sieved sand. The
seived sand should be used to fill the
depres- sions on the surface only. Use the
edge of the guideplate to remove all
excess sand and produce a level
condition. Make sure the CPN MC-3 does
not rock or wobble before taking a test.
W ith these precautions, the effect of
surface voids will be minimized.
Do not use a sand filler on smooth
(voidless) surfaces as this may raise the
gauge off the surface enough to cause
lower density readings in error.
Percent Air Void Determination
To determine the percent air voids (% Av) of a compacted paving mixture, a lab-determined
maximum specific gravity for the mix (SG) and a wet density determined by the CPN MC-3 (Dn wet)
must be available. The PORTAPROBE® uses the formula:
% Av =
(SG - Dn wet)
x 100
SG
The theoretical maximum specific gravity of the mix (SG) can be converted to pcf total density units
as follows:
SG x 62.43 = Dn wet in pcf
32
Asphalt Pavement
Thin Lift Overlays
The CPN MC-3 contains a Thin Layer mode of measurement which allows rapid density
determination of thin lifts of asphalt pavement. It is necessary to know the density of the underlying
material and the thickness of the upper lift. The underlying density is determined by CPN MC-3
density tests before the overlay is applied. The overlay is then placed and compacted at a known
thickness. The Backscatter (or AC) density tests in the Thin Layer mode are used to compute and
display the density of the upper layer. The procedure follows:
Action
Result
1. Press STEP + START.
The CPN MC-3 displays a menu which allows for
selecting the measurement mode desired.
COUNTING MODE
Current: NORMAL
Normal
Thin layer
Trench wall
STEP & ENTER choice
2. STEP to the Thin Layer option and ENTER.
The Thin Layer mode prompts for the thickness
(0.1 to 2.9 inches in 0.1 inch increments) or the
overlay material and the density of the underlying
or base material.
THIN LAYER
Lift:
1.5
Under: 142.0
in
pcf
Enter Lift value.
Enter Under value.
3. Enter the lift thickness and underlying density
The screen now returns to the most recent
display from the keypad. The CPN MC-3 is in the
Thin Layer mode
4. START a Thin Lift test.
W hile the gauge is counting, "THIN" is displayed.
A "T" will be displayed with the depth of
measurement (AC or BS) on the test result
screen.
33
Soils/Aggregates
Transmission Measurements
The transmission mode of the PORTAPROBE®
measures density of soils and aggregates to depths of 2
to 8 in (50 to 200 mm). Optional models measure to
depths of 12 in (300 mm).
Density measurements are made with the CPN MC-3 PORTAPROBE® set to one of the transmision
mode depths. Measurements performed on soils require no special preparation other than preparing
a surface that is level and relatively smooth, and drilling a hole for inserting the source rod.
The guideplate can be used to
smooth loose soil on an uneven
surface. For soft soils, the hole can
be drilled with the drill pin and a
hammer or mallet, using the
guideplate as a template. Extract
the pin while standing on the
guideplate to ensure an
undisturbed hole. Do not use the
guideplate as a tool to remove the
drill pin.
34
Soils/Aggregates
Transmission Measurements
For hard soils, a Campbell hammer may be required, as shown in Figure 3-2. The weighted hammer
is used to both drive and extract the pin while the operator stands on the guideplate. Drill the hole a
minimum of 2 in (50 mm) deeper than the intended depth of measurement.
Figure 3-2. Using the Campbell Hammer
After drilling the transmission hole:
1. Tilt the PORTAPROBE® slightly using the
cast lip on the front of the bottom casting.
2. Lower the source rod until the handle is
between 2 and 4 in (50 and 100 mm).
3. Grasp the guide tube above the handle and
raise the CPN MC-3 until the source rod is
visibly going into the hole. (Look over the
front end of the gauge.)
4. Lower the CPN MC-3 and source rod into
the hole.
5. Set the handle to depth position desired and start test.
35
Soils/Aggregates
Moisture Measurements
Moisture measurements are taken simultaneously with density measurements by the CPN MC-3
®
PORTAPROBE . Depth of measurement is a function of the moisture content and decreases with an
increase in moisture. Depth of measurement averages 6 in (15 cm) of a soil at 15 pcf (0.240 g/cm3)
moisture. The CPN MC-3 moisture mode measures all hydrogen in the material. In most soils and
aggregates this hydrogen is in free water. Serpentine soils, clays, organic matter, and lime-treated
soils, which contain bound hydrogen, produce higher moisture readings on the PORTAPROBE®.
To establish the correct bias in such a soil, use the following procedure, condensed from ASTM D
3017:
1. On a compacted soil having a uniform moisture content, determine the total density (Dw) and
moisture (H2O) using the CPN MC-3 PORTAPROBE®.
2. Obtain one or more soil samples (150 to 200 g) from the site of the nuclear gauge test.
3. W eigh each sample, oven dry to a constant weight at 110° C, and weigh each dry sample.
Compute the average moisture content as follows:
Weight of water x 100
= MC, % moisture, dry weight basis
Weight of dry soil sample
4.Determine the actual moisture in pounds per cubic foot follows:
M =
MC x Dw
MC +100
where: M = moisture, pcf
MC = moisture content, % of dry weight (step 3)
Dw = wet density, pcf (from step 1)
5. Determine the correction factor to be entered into the M
BIAS:
M BIAS = M, oven dry - H2O, nuclear gauge
6. This value can be used for all field testing of the same
soil type.
Example:
CPN MC-3 test results:
Dw = 130.0 pcf
H2O = 12.5 pcf
Oven dry MC = 9.0%
9.0 x 130.0
= 10.73 pcf
9.0 + 100
M BIAS = 10.73 - 12.50 = - 1.77 pcf
Then, M =
Over-sized Rock Correction
Often rocky, natural soils are tested for density. The CPN MC-3 will measure the total density of the
material under test, including rocks. For this reason, a series of random tests on this material will
show a greater deviation around the average than on an area of processed uniform material. A
number of separate soil volumes can be tested at one prepared site by rotating the gauge 90 or 180
degrees around the transmission hole and recording the average density value. This procedure
should be used whenever the material requires a rock correction in the laboratory test of moisturedensity relationships, whenever 10 to 30 percent of the material is retained on the ¾ inch sieve.
36
Soils/Aggregates
Trench Testing
Trench backfill measurements are made after ensuring that the surface in the bottom of the trench is
smooth and level, as described in the Soils/Aggregates section.
For tests performed in trench excavations that are at least 30 in (762 mm) wide, the PORTAPROBE®
should be centered in the bottom of the trench to avoid reflection errors from the trench walls.
W hen testing in confined excavations, such as trenches less than 30 in (762 mm) wide, use the
Trench W all mode of the CPN MC-3 and the 3-inch standard block to correct for the background
influence of neutrons reflected from nearby trench walls. The procedure follows:
Action
Result
1. Press STEP + START.
The CPN MC-3 displays a menu which allow for
selecting the counting mode desired.
COUNTING MODE
Current: NORMAL
Normal
Thin Layer
Trench Wall
STEP & ENTER choice
2. STEP to the Trench W all option and
ENTER
The Trench W all mode prompts for entry of a
background count.
TRENCH WALL
Background
2345 cpm
Place MC3 on block
in the trench and
press START, or
ENTER to accept.
3. START a background count with the
CPN MC-3 on standard block in the
trench, or ENTER to accept the
displayed value.
Upon completion, the screen returns to the most the
recent display. The CPN MC-3 is in the Trench W all
mode.
4. Remove the standard block and
START a trench backfill test at the
same location.
W hile the gauge is countng, "W ALL" is displayed. A
"W " will be displayed with the depth of
measurement on the test result screen.
37
Section 4 - Other Test Methods
Because of the increase in the rate of placement of earthworks and pavements in highway
construction, state highway departments and other agencies have adopted procedures that simplify
and speed density control testing with nuclear gauges. They are discussed in general terms below.
Statistical Control
A statistical approach to compaction control consists of taking several in-place density tests in an
area designated by the engineer and based on the uniformity of materials to be tested. The
acceptance or rejection is based on the average relative compaction and the percentage falling below
the required relative compaction value. For example, a test specification might require that the
average of 10 tests on an area must be above 95% relative compaction with no individual test below
90%.
Core Correlation
A common test method compares a series of CPN MC-3 density tests with laboratory determined
core sample densities taken from directly beneath the site of the nuclear tests. A correction factor can
now be established to program into D BIAS for all further testing on the same material. ASTM
Standard Test Method D 2950 discusses these procedures in more detail. Historical data indicates D
BIAS's of 1-2 pcf (0.016-0.032g/cm3) in BS and 3-4 pcf (0.048-0.064 g/cm3) in the AC position. For
example, a series of 10 total density (Dw) readings on a 300-ft. test strip average 144 pcf and the 10
core determinations at the same locations average 145.5 pcf. The D BIAS is then 145.5 - 144.0 or
+1.5 pcf.
Concrete Testing
The CPN MC-3 can be used to determine the density of concrete pavements or structures. Density
measurements may be performed in either the transmission or the backscatter mode. It is best to
prepare a transmission hole when the concrete is still setting. Before the concrete has initially begun
to set, drill a transmission hole. After the concrete has set up, transmission tests can be taken. The
PORTAPROBE® can be used on portland cement concrete, roller-compacted concrete, and soilconcrete mixtures.
38
Control Test Strip
The CPN MC-3 can be used to establish the maximum obtainable density of both embankments and
asphalt pavements. An initial section of material under construction is used as a control strip. Nuclear
density tests are taken after each successive pass of the roller until no further increase in density is
achieved (see Figure 4-1). At this point, a number of CPN MC-3 tests are taken to accurately
determine the maximum obtainable density.
The completed control strip becomes a part of the construction and specifications for the remainder
of the project are established as a percent of the control strip density. A new control strip is required
when a change in materials occurs. For example, a test method may require:
1. A 300-ft.-long by one lane control strip. After completion, the average of 10 CPN MC-3 total
density tests (Dn wet) is the maximum obtainable density.
2. 2000-ft. by one lane or 100-ft. by two lane test sections. The average of 10 CPN MC-3 total
density tests must be at least 98% of the maximum obtainable density (on the control strip), with
no individual test below 95%.
Figure 4-1. Test Strip Roller Pass Pattern
Roller Compaction Evaluation
The CPN MC-3 can be used to evaluate the capabilities of compactive rollers, allowing the most
efficient use of time and equipment for a given project.
39
Section 5 - Maintenance
Clean and Lubricate Shutter Mechanism
The shutter should be cleaned and lubricated weekly during use, or whenever the source rod
becomes dirty and begins to stick.
1. Remove the four screws securing shutter
plate block assembly.
2. Remove shutter assembly.
CAUTION
Radioactive source is located in
base cavity. Do not touch the
source rod tip and do not place
yourself in front of the opening
after the shutter block is removed.
3. Stand behind the gauge and use a long-handled
brush or compressed air to clean exposed area
inside CPN MC-3.
4. Clean entire shutter assembly and spray with the
greaseless silicone lubricant provided.
5. Allow assembly to dry, then reinstall shutter block
and plate.
6. Check CPN MC-3 handle to ensure it slides freely in
guidetube.
Cleaning and lubrication completed.
40
Handle Assembly Inspection
Inspect the handle assembly monthly for
wear.
1. Set handle in BS position.
2. Loosen 5/32 in Allen head hex screw on
side of guide tube ONLY until handle is
free. Do not remove screw.
3. Pull handle away from guide tube.
4. Check beveled front edge of handle latch
for excessive wear.
5. Check notches inside guide tube for excessive
wear.
NOTE
If wear on the notches or latch
appears to be excessive,
contact your CPN - Instrotek
service
representative
f or
assistance.
6. Reassemble handle to guide tube assembly and
tighten Allen screw.
41
Leak Test
The leak test is required every six months or yearly.
(Check your Radioactive Materials license for the time interval.)
1. Use the CPN- InstroTek Leak Test Kit
to perform this required test for
leakage of the source material from its
capsule. Set handle to SAFE position.
2. Remove four screws securing
display/keyboard panel to CPN MC-3.
Set keyboard/display panel aside,
leaving cables connected.
3. Use the cotton swab in the kit and swab
the source holder inside the CPN MC3. This will pick up any removable
traces of the Am-241:Be source material.
4. Reattach display/keyboard to CPN MC-3
with four screws that were removed in step
2.
5. Use the cotton swab in the kit to swab
around cleanout plate ring on the aperture.
This will pick up any removable traces of the
Cs-137 source material.
6. Break swab stick in half and place in plastic
envelope. Complete form and staple
envelope to it; mail to address on the kit.
W ithin approximately two weeks you will
receive notification of results.
42
Charging Battery Pack
A battery pack of 8 welded AA rechargeable nickel cadmium batteries is located beneath the
keyboard/display electronics package.
W hen "lob" appears in the lower right hand corner of the main screen, the instrument will take
approximately 100 more 30-second tests before it will go into cutoff. Test for the presence of the "lob"
by pressing the CLEAR key. This should be done before going into the field, preferably the evening
before to allow time to recharge if necessary.
®
1. Set PORTAPROBE® handle to SAFE position.
2. Connect battery charger power cord to 120 VAC power outlet.
3. Connect battery charger to jack on rear panel. Press any key to update the screen.
4. Main display screen message "lob" is replaced with "chg", indicating batteries are being charged at
C/10 charge rate. Full charge time is 12 to 14 hours.
NOTE
Prolonged overcharging or failure to
allow the battery pack to discharge to
“lob” condition may cause a loss of
battery capacity which will be difficult
to recover.
Storage
®
To protect the PORTAPROBE®, store it in the packing case when not in use. The normal 8 year shelf
life of the internal memory keep-alive lithium battery will be reduced to 4 years if the NICAD battery is
not kept charged or is disconnected. For long term storage, charge the gauge before placing in
storage and recharge every 3 months.
Close and latch the lid of the shipping container when not in use to prevent moisture intrusion.
43
APPENDIX A
Display Messages and Prompts
Message:
Meaning:
Action:
chg
Battery charging at C/10.
None.
lob
Low battery condition 25%
charge remaining.
Charge battery.
START new standard
CLEAR exit
Message
displayed
standard count screen.
on
Press START to initiate a
standard
count.
Press
CLEAR to return to main
display.
Put rod in SAFE and press
START
Standard count attempted
when probe is set to a depth
other than SAFE position.
Set the handle to SAFE
position and press START.
Press STEP to stop
Press CLEAR to abort
Message displayed during a
standard count.
No action required unless
operator wishes to stop the
standard count in progress.
To stop the count and store
the count taken to that point,
press STEP. To abort the
count, press CLEAR.
Bad depth:
Put handle in proper position
and press START
Test attempted when source
rod
is
set
to
an
unprogrammed
depth
position.
Set rod depth to correct depth
position and press START.
44
APPENDIX B
Troubleshooting Guide
The CPN MC-3 PORTAPROBE® can generally be repaired by isolating the problem and replacing the
defective component. Only the tools supplied in the shipping case are needed for component
exchange.
P r obl e m
Action
Display remains blank. No beep, no
response to keyboard commands.
1. Push the reset button on the rear panel.
2. Batteries are discharged below cutoff voltage and
require charging.
OR
3. Batteries are dead and require replacement.
Same condition as above,
batteries are fully charged.
Replace main electronic assembly.
except
CPN MC-3 operational but no change in
density readings. Xi = 0.0 in count mode,
wet* displayed.
1. Replace density detector assembly.*
2. Replace wire harness.
3. Replace main electronic assembly.
CPN MC-3 operational but no change in
moisture readings. Xi = 0.0 count mode,
H2O* displayed.
1. Replace moisture detector.*
2. Replace wire harness.
3 Replace main electronic assembly.*
On all counts wet* displayed. On
standard counts Xi value is out of limits.
Replace density detector assembly.*
On all counts H2O* displayed. On
standard counts Xi value is out of limits.
Replace moisture detector assembly.*
* Involves recalibration. Contact the CPN-Instrotek Service Center for further information.
45
APPENDIX B
Troubleshooting Guide
P r obl e m
Action
Upon taking a test, CPN MC-3 beeps
twice and displays:
1. For continued field use, press STEP + CAL,
STEP to Depth Mode, ENTER Fixed Mode
(Depth: Fixed), and CLEAR.
Bad depth :
Put handle in proper
position and press
START.
2. Replace guidetube strip switch, when possible.
even though handle is in a proper depth
position.
PRINT or DUMP reports fails to operate
but
screen
displays
"PRINTING
REPORTS" or "DUMPING REPORTS".
1. Check for proper baud rate setting in MENU
field. Printers are usually 9600 BPS and
computers can be 300, 600, 900, 1200, or 9600
BPS.
2. Check RS232 serial cable pin connectors. Check
pins 2, 3, and 7 on 25-pin connector and
handshake pins. If necessary check device
manual or call CPN Service Center.
PRINT or DUMP reports fails to
operate. NO "Printing Reports" or
"Dumping Reports" appear on CPN MC3 screen.
46
Record Log is empty. Data must be taken.
APPENDIX C
Data Transfer
To transfer (upload) stored data from the CPN MC-3 PORTAPROBE®, you will need a printer or
computer with the following characteristics:
Asynchronous RS-232-C data interface (ASCII format)
300- to 9600-bps baud rate (to which the CPN MC-3 will be set)
11-bit character length (1 start bit, 7 data bits, 1 space parity bit, 2 stop bits)
Action
Result
1. Connect RS-232-C cable to printer
and CPN MC-3 PORTAPROBE®.
2. Press PRINT.
Screen displays
prompting:
printer
menu
with
cursor
PRINT
Print reports
Dump reports
Baudrate = 9600
Control characters
Print coeffs
STEP & ENTER choice
3. Press STEP until prompt is at baud
rate, then press ENTER.
Ready to select baud rate.
4. Press STEP until desired baud rate is
displayed, then press ENTER.
Baud rate selected.
5. Press STEP until prompt is on
control characters, then press
ENTER. Follow prompted instructions
on screen to select control
characters.
Printer control characters set.
47
APPENDIX C
Data Transfer
Action
Result
6. Press STEP to select the printout
format.
Either Print reports or Dump reports is selected.
Print reports is a formatted output with headings
identical to the test screen display. Dump reports is
a condensed format with all numerical data
separated by commas.
DUMP REPORT FORMAT
----------------------------------------101, 1, 10, 16, 13, 44
pcf, Da, 8, 00, 30
134.6,0.44,0.0
14.2,0.25,0.0
120.4,0.69
11.8, Md, 125.5, 96.0
COMPACTION
8160,0.95,4738,1.01
ID, TESTS, MONTH, DAY, HOUR, MIN
UNITS, DEPTHMODE, DEPTH, ELAPSED MIN, ELAPSED SEC
DWET, DWET PREC, DWET BIAS
H2O, H2O PREC, H2O BIAS
DRY, DRY PREC
WATER%, COMPACTION TEST, MAXIMUM VALUE, %
DCOUNT, DXi, MCOUNT, MXi
PRINT REPORT FORMAT
---------------------------------------R101 -1 1016 1344
Da8
ET00:30
pcf
wet
h2o dry
Dn 134.6 14.2 120.4
Pr
0.44 0.25 .7
%
11.8 96.0
Md
125.5
Bi 0.0
0.0
ID, TESTS, MONTH/DAY, HOUR/MIN
DEPTHMODE,/DEPTH, ELAPSED TIME
UNITS, WET HEADER H2O HEADER, DRY HEADER
DENSITY ROW, WET DENSITY, H2O DENSITY, DRY DENSITY
PREC ROW, DWET PREC, H2O PREC, DRY PREC
% ROW, WATER %, % COMPACTION
COMPACTION TEST, MAXIMUM VALUE
BIAS ROW, DWET BIAS, H2O BIAS
R101 -1 1016 1344
Da8
ET00:30
pcf
wet
h2o
Ct
8160 4738
Xi
0.95 1.01
ID, TESTS, MONTH/DAY, HOUR/MIN
DEPTHMODE/DEPTH, ELAPSED TIME
UNITS, WET HEADER, H2O HEADER
COUNTS ROW, DWET COUNT, H2O COUNT
Xi ROW, DWET Xi, H2O Xi
7. Press ENTER.
Printer starts printout and PORTAPROBE® screen
displays:
Print Reports
REC: 15 of 200
Line numbers on display will vary according to
number of records stored in CPN MC-3 memory
and currently being printed.
8. Press STEP + CLEAR to stop upload
or to exit from print mode.
48
Printer stops printing and CPN MC-3 screen returns
to print menu.
APPENDIX C
Data Transfer
To print calibration coefficients, proceed as follows:
Action
Result
1. Set correct baudrate and control
characters as above.
2. Press STEP until prompt is at print
coefficients option, then press
ENTER.
Printer starts printout and screen displays line
number currently being printed.
Upon completion, or by pressing STEP + CLEAR to
stop transfer, screen returns to print menu.
49
APPENDIX C
Data Transfer
CPN MC-3 Dump Software
This is an optional software supplied by CPN-Instrotek on a CD along with the purchase of the RS232 download cable. The program is intended to be used with all versions of CPN MC-3 nuclear
gauges.
Both programs perform the same basic function; they establish a link to the CPN MC-3 through one
of the PC’s COM ports, send commands to the gauge to retrieve stored records, and output the data
to a file on the PC. The only difference between them is in the format of the file produced.
The CPN MC-3 outputs its data in “Print Reports” format or “Dump Reports” format ( see the
description of these formats in Step 6 of Printing Records), the MC-3 DUMP program copies the data
in either of these formats to the output file. The data as it appears in the output file is unaltered by the
MC-3 DUMP program. The LOTUS MC3 program reads the data from the CPN MC-3 in the native
“Dump Reports” format, and then modifies the data to a comma and quote delimited ASCII format
before outputting it to the file.
If you will be using a spreadsheet or database program such as Lotus 1-2-3, Borland Quattro Pro,
Microsoft Excel, dBase, Paradox, or similar application for your reports, it is recommended that you
use the LOTUS MC-3 program. This program formats the data in the output file MC-3 LOTUS.PRN
to accommodate the File Import feature of most spreadsheet and database applications. W hen
importing the MC-3 LOTUS. PRN file into the application, it is sometimes necessary to specify to the
application program that the data format is ASCII, with fields (columns) delimited by a comma, text
delimited by quotes (""), and records (rows) terminated by a carriage return .
In Lotus 1-2-3, the keystrokes required to import a file are /FIN (mnemonic /File:Import:Numbers). If
you use a program other than Lotus 1-2-3, refer to the program documentation to determine the exact
procedure for importing a comma and quote delimited ASCII file.
The MC-3 connects to one of the COM ports on your computer via a serial cable fitted with a
miniature LEMO connector on one end (for connection to the CPN MC-3) and a DB-25S (P/N
501516) or an AT-style DB-9S (P/N 500658) on the other end (for connection to your computer). Both
MC-3DUMP and LOTUSMC-3 will work with either COM1 or COM2 on your computer.
NOTE
To use special upload
options, contact CPN Instrotek for assistance.
50
APPENDIX D
Accessories
P a rt
Number
Description
C-101050
Campbell Hammer, impact type
C-400950.1
Battery charger, wall
C-702815
Battery charger, car, equipped with cigarette lighter connector
1520046
Survey Meter (Monitor 4) GM detector
500658
Download Cable, 6 ft (1.8m), equipped with RS-232-C/DP9S connectors (computer
uploading) IBM, AT, PORTABLES & SOFTW ARE
51
APPENDIX E
Conversion Factors
Multiply
By
To Obtain
inches (in)
25.4
millimeters*
millimeters (mm)
0.03937
inches
pounds per cubic foot (pcf)
16.01846
kilograms per cubic meter
kilograms per cubic meter (kg/m3)
0.06243
pounds per cubic foot
pounds per cubic foot (pcf)
0.01601846
grams per cubic centimeter
grams
per
(gr/cm3)**
cubic
centimeter 62.428
pounds per cubic foot
* On the source rod depth settings of the CPN MC-3 guidetube, 1 inch is equals to 25.0 millimeters.
** The CPN MC-3 PORTAPROBE® displays grams per cubic centimeter as gcc.
52
GLOSSARY
ASTM: American Society of Testing and
Materials. Publish standard test methods for all
materials, including moisture and density
determination of soil- aggregates and
pavements.
COMPACTION (DENSITY) CONTROL: The
testing of soil and aggegate mixtures during
field construction to assure that specified
compaction levels are obtained relative to
laboratory-determined values. The following
ASTM standard test methods are used to
obtain the maximum values to be entered into
the CPN MC-3 PORTAPROBE® for relative
(%) compaction determinations.
D 1557: Moisture-Density Relations of Soils
and Soil-Aggregate Mixtures Using 10lb (4.54 kg) Rammer and 18-in (457
mm) Drop.
D 1188: Bulk Specific Gravity of Compacted
Bituminous Mixtures Using ParaffinCoated Specimens.
D 2041: Theoretical Maximum Specific Gravity
of Bituminous Paving Mixtures.
MAXIMUM WET DENSITY (Mw): The
maximum density of a paving mixture.
Determined by laboratory test and commonly
known as Marshall value. Programmable into
the CPN MC-3 for relative compaction
calculations (%MW ).
MOISTURE CONTENT: (%H2O): The mass of
water in a soil expressed as a percent of the
dry soil mass. Calculated by the CPN MC-3 as:
Dn H2O/Dn dry x 100.
OPTIMUM MOISTURE CONTENT (OMC):
The moisture content of a soil at which a
specified amount of compaction will produce
the maximum dry density, expressed as %
moisture.
PERCENT AIR VOIDS (%Av): The volume of
air voids in a soil or paving mixture expressed
as a percentage of the total volume of the
material. Calculated by the CPN MC-3 as:
((Av - Dn wet)/Av) x 100.
DRY DENSITY (Dn Dry): Mass of soil, after
drying for 24 hours at 110° C, contained in a
unit volume of undried soil, expressed in pcf or
3
g/cm . Calculated by the CPN MC-3 as follows:
Dn wet - Dn H2O = Dry Density.
RELATIVE or % COMPACTION,
PAVEMENTS (%Mw): The percentage ratio
between the total density of an in-place
pavement (Dn wet) and its maximum total
density (Mw) as determined by a specified
laboratory compaction test.
DRY DENSITY-MOISTURE CONTENT
RELATIONSHIP: The relationship between dry
density and moisture content of a soil under a
given compactive effort. Commonly known as
a Proctor Test after its originator, R.R. Proctor.
RELATIVE or % COMPACTION, SOILS
(%Md or Av): The percentage ratio between
the dry density of an in-place soil (Dn dry) and
its maximum dry density (Md), determined by a
specified laboratory compaction test.
MAXIMUM BULK SPECIFIC GRAVITY (Av):
the maximum bulk specific gravity of a paving
mixture. Determined by laboratory test and
programmable into the CPN MC-3 for percent
air void calculations (%Av).
TOTAL MOISTURE (Dn H2O): The mass of
water in a unit volume of soil, expressed in pcf
or g/cm3. A direct measurement of the CPN
MC-3.
MAXIMUM DRY DENSTIY (Md): The dry
density obtained using a specified amount of
compaction at the optimum moisture content.
Commonly known as the Proctor value and
programmable into the CPN MC-3.
WET DENSITY (Dn wet): Mass of bulk soil,
including solids, water, and air, contained in a
unit volume, expressed in pcf or g/cm3. A
direct measurement of the CPN MC-3.
53
INDEX
%
%COMP
key • 14
A
Accessories • 52
Americium-241:Beryllium • 3
Asphalt Pavement • 31, 33
ASTM • 54
Standards • 1
B
Backscatter Measurements • 31
Battery Charger Jack • 10
Battery Life • 7
battery pack • 2
C
CALIB
key • 14
Calibration • 7, 24, 26
Campbell Hammer
usinf the • 35
Cesium-137 • 3
Changing Screen Results • 23
Changing Units • 23
Charging Battery Pack • 43
Charging Time • 7
CHEMICAL COMPOSITION • 8
Chemical Error • 6
Clean and Lubricate Shutter Mechanism • 40
CLEAR
key • 13
COMPACTION % and MAXIMUM Parameters • 19
COMPACTION (DENSITY) CONTROL • 54
Concrete Testing • 38
Configuring PORTAPROBE® for Measurements • 16
Control Test Strip • 39
Conversion Factors • 53
Core Correlation • 38
COUNTING MODE selection • 19
CPN MC-3 Dump Software • 51
CPN MC-3 PORTAPROBE® Features • 2
CPN MC-3 PORTAPROBE® Inspection • 9
D
D BIAS
key • 14
Data Interface • 7
Data Logging • 28
Date and Time Reset • 19
Definitions • 8
Densitty Range • 6
54
DENSITY and MOISTURE BIAS Parameters • 19
density measurement • 3
Depth of Measurement • 6, 8
Dimensions • 6
Display • 6
Display Messages and Prompts • 45
DRY DENSITY (Dn Dry): • 54
DRY DENSITY-MOISTURE CONTENT RELATIONSHIP •
54
E
Edit Coefficients • 24
Electrical specifications • 7
Encapsulation • 7
ENTER
key • 13
Environmental specifications • 7
F
Factory Configuration • 18
Field Use • 31
Functional Description • 3
G
gamma emitter • 3
Gamma Source • 7
Geiger-Mueller • 3
detector • 3
General Information • 1
GLOSSARY • 54
guide tube assembly • 10
H
Handle Assembly Inspection • 41
Helium-3
detector • 3
Humidity • 7
I
ID
key • 13
Index • 55
K
Keyboard Functions • 13
L
Leak Test • 42
Learning to Use the CPN MC-3 • 11
LOTUSMC3 • 51
M
M BIAS
key • 14
Maintenance • 40
MAX
key • 14
MAXIMUM BULK SPECIFIC GRAVITY (Av) • 54
MAXIMUM DRY DENSTIY (Md) • 54
MAXIMUM WET DENSITY (Mw) • 54
MC3DUMP • 51
Memory storage • 2, 7
MOISTURE CONTENT: (%H2O) • 54
moisture measurement • 3
Moisture Measurements • 36
Moisture Range • 6
N
neutron emitter • 3
Neutron Source • 7
Normal
mode • 22
O
Operating Temperature • 7
Operation • 11
Operation Summary • 30
OPTIMUM MOISTURE CONTENT (OMC) • 54
Other Test Methods • 38
Over-sized Rock Correction • 36
P
Parameters
Range • 18
Percent Air Void Determination • 32
PERCENT AIR VOIDS (%Av) • 54
Performance • 6, 7
potential danger • 1
Power Consumption • 7
Power Source • 7
Precision • 6, 8
PRINT
key • 13
Product Description • 1
R
radiation
emitting • 3
hazard • 1
radioactive sources • 3
Radiological specifications • 7
Range
of Parameters • 18
RECALL
key • 13
RELATIVE or % COMPACTION, PAVEMENTS (%Mw) •
54
RELATIVE or % COMPACTION, SOILS (%Md or Av): • 54
Reviewing Test Results • 29
Roller Evaluation • 39
Roughness Error • 6
RS-232-C Connector • 10
S
Self Calibration • 26
Shipping Requirements • 7
Shipping Weights • 6
Soils/Aggregates • 34, 36, 37
Special Form Approval • 7
Specifications • 6, 7
Standard Count Procedure • 20
Standard Counts • 20, 21
Standard Equipment • 4, 5
START
key • 13
Statistical Control • 38
STD
key • 14
STEP
key • 13
STEP + CALIB • 15
STEP + CLEAR • 15
STEP + ENTER • 15
STEP + ID • 15
STEP + START • 15
STEP + TIME • 15
STEP + UNIT • 15
Storage • 43
Storage Temperature • 7
Storing Test Results • 28
SURFACE ROUGHNESS ERROR • 8
T
Taking a Test • 22
Thin Lift
mode • 22
Thin Lift Overlays • 33
TIME
key • 14
TIME and PRECISION Parameters • 19
TOTAL MOISTURE (Dn H2O) • 54
training course • 1
Transmission Measuremens • 35
Transmission Measurements • 34
Trench Testing • 37
Trench Wall
mode • 22
Troubleshooting Guide • 46, 47
U
UNIT
key • 14
Units of Measurements • 7
Units of Measurement • 23
UNITS Parameters • 18
Using the Campbell Hammer • 35
55
Nuclear Gauge Emergency Response Information for Transportation
Reference DOT p5800.5 ERG93, and 49CFR
Potential Hazard
1) Proper Shipping Name
• Radioactive Material Type A Package, special Form, Non-Fissile or Fissile-Excepted, 7, UN3332
RQ
2) Health Hazards
• Radiation presents minimal risk to lives of persons during transportation accidents.
• Undamaged packages are safe; damaged packages or materials released from packages can
cause external radiation hazards. Contamination is not suspected.
• Packages (cartons, boxes, drums, articles, etc. ) identified as “Type A” by marking on packages
or by shipping papers contain non-Life endangering amounts. Radioactive sources may be
released if packages are damaged in moderately sever accidents.
• Packages (large and small, usually metal) identified as “Type B” by marking on packages or by
shipping papers contain potentially life endangering amounts. Because of design, evaluation.
and testing of packages, life endangering releases are not expected in accidents except those
of utmost severity.
• Commonly available instruments can detect most of these materials.
• W ater from cargo fire control is not expected to cause pollution.
3) Fire or Explosion
• Packaging can be consumed without content loss from sealed source capsule.
• Radioactive source capsules and Type B packages are designed to withstand temperatures of
1475°F (800°C)
Emergency Action
4) Immediate Precautions
• Priority response actions can be performed before taking radiation measurements.
• Priorities are life saving, control of fire and other hazards, and first aid.
• Isolate hazard area and deny entry. Notify Radiation Authority of accident conditions.
• Delay final cleanup until instruction or advice of Radiation Authority.
• Positive pressure self-contained breathing apparatus (SCBA) and structural firefighter’s
protective clothing will provide adequate protection against internal radiation exposure, but not
external radiation exposure.
• Call the following numbers depending on the gauge model:
o Troxler Electronics Labs, Inc.
(919)839-2676
o CPN
(800)852-7550
o Humboldt Scientific
(800)992-4589
5) Fire
• Do not move damaged packages; move undamaged packages out of fire zone.
• Small Fires: Dry chemical, CO2 water spray or regular foam.
• Large Fires: W ater spray, fog (flooding amounts)
6) Spill or Leak
• Do not touch damaged packages or spilled material.
• Slightly damaged or damp outer surfaces seldom indicate failure of inner container.
• If source is identified as being out of package, stay away and await advice from Radiation
Authority.
7) First Aid
• Use First aid treatment according to the nature of the injury.
• Persons expose to special form sources are not likely to be contaminated with radiation
material.
56
TIPS TO AVOID COSTLY
WATER DAMAGE
• If you can avoid it, do not use the gauge in rain or let it be
sprayed by a water truck
• If testing in rain, or light drizzle, cover the gauge with plastic.
• Keep the case dry by covering with plastic or storing in a covered
area. In a heavy, water will seep through the case. If the gauge is
stored in a wet case long enough, permanent water damage can
occur.
• Do not store a wet gauge! Be sure the gauge and case are
completely dry first. Remove the stack from the gauge, wipe off
water, and store unit in a dry area. Leave the lid of the case open
to allow it to dry. You may also use a hair dryer to dry it more
quickly.
57
BACK
LEFT SIDE
RIGHT SIDE
T OP
MC-1DR, MC-3 Radiation Profile Chart
Readings in Mrem/hr
BOTTOM
0.14
2.63
0.76
0.14
1.00 M
0.05 M
0.30 M
1.00 M
1.44
0.48
0.10
0.14
0.80
2.37
0.61
0.14
0.14
0.92
0.83
0.45
0.15
0.15
0.72
0.76
0.18
0.07
0.24
1.97
0.17
0.10
0.04
0.12
0.61
5.80
0.85
0.18
0.14
0.92
4.29
0.76
0.11
0.06
0.31
4.48
0.76
0.19
0.14
0.39
0.88
0.33
0.07
0.09
0.49
5.01
1.84
0.33
0.22
12.54
Neutron:
Model Eberline ESP-1 w/NRD, Serial# 258, Calib. Date: Dec. 15, 1998, Background Count: 0.01 mrem/Hr
Gamma:
Model: Eberline ESP-1 w/HP270, Serial# 1919, Calib. Date: Dec. 15 1998, Background Count: 0.03 mrem/Hr
Survey Meters Used:
0.99
58
HANDLE
1.00
0.43
0.11
0.13
0.98
Gamma Neutron Gamma Neutron Gamma Neutron Gamma Neutron Gamma Neutron Gamma Neutron Gamma Neutron
7.25
3.09
7.25
2.17
6.33
1.86
9.50
1.00
8.44
1.84
30.99
6.37
0.61
0.30
0.30 M
0.05 M
FRONT
Gauge
Case
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