Crowcon Detection Instruments GASMANII Gasman 11 Portable Gas Detector User Manual

Download:
Mirror Download [FCC.gov]
Document ID	93302
Application ID	JG7OQiQTn9J4muCXFLcTEQ==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	42.84kB (535555 bits)
Date Submitted	2000-03-27 00:00:00
Date Available	2000-07-27 00:00:00
Creation Date	2000-01-25 17:57:25
Producing Software	Acrobat 4.0 Scan Plug-in for Windows
Document Lastmod	2000-01-25 18:41:12
Document Title	User Manual
Document Creator	Acrobat 4.0 Scan Plug-in for Windows

Gasman II Instruction Manual
Gasman II
Flammable
Rechargeable Batteries
Upon receipt we recommend that Flammame
mstruments are My charged Yor 16 hours
prior in use.
tound to comply with the Eurupean
c E This product has been tested and
Directive 89l336/EEC
WARNING. Substrtutipn ef cumponenis may lmpalr
1nlrinsic Safety.
1ssue 5 Page 2
“199
—_—-——_—————
fiCROWCON
Contents Page
1. Quick Operating Guide 4
2. Unpacking 4
3. Introduction 5
4. Specification 5
4.1 Instrument Settings 8
4.2 Battery Lifetime 9
4.3 General Assembly 10
5. Operation 11
5.1 Swilcnvcn sequence 11
5.2 Dlsplay Symbm Gulde 12
5. Batleries 15
6,1 Recharging 15
6.2 Changrng the batterres 16
s 3 Charger Suppries 1S
7. Alarm Types 15
a. Keypad Adjustments 13
5.1 Wewing settings 1B
82 Adjusllng setungs 19
a 3 Zeroing 20
5.4 Calibral‘ron 20
9. Accessories 21
9.1 Calrbralicn Adapter 21
9.2 Universal Clip 21
93 Rubber Boot 22
10. Rnutine Checking 22
10.1 General 22
10.2 Sensor inter 22
10.3 Zero & Calibration 23
10.4 Sensor Replacemenl 23
11. Troubleshooting Guide 24
11 ,1 Error Codes 25
12. natalogging and Dmcomms 26
12.1 Hardware lnlerface 27
13. Sensor leitatinns 27
14. Accessorles and Spare Pam 28
14 1 Accessnries Lisl 28
14.2 Spare Parts List 29
lasue 5 Page 3
was
Gasman II Instruction Manual
1. Quick Operating Guide
Switch on: Press large button; alarm
test and LCD test occurs,
followed by battery level
display.
Normal condition: Gas level displayed on
LCD‘. Intermittent
‘oonfidence' signal
(if selected).
Alarm condition: Fast flashing red LEDs
and sounder
Alarm reset: Press large button when
hazard has passed.
Activate backlight: Press and hold large
button.
Switch Instrument Press both buttons
Oit: together & release
Zero instrument: When unit is oft. press
small button & hold.
The V symbol will
appear. Keeping the small
button pushed in. press
the large button.
For oxygen models. the A symbol appears
and pressing the large button sets the reading
to 20.9%.
' reading may take a lew seconds to settle
after SWilch-on
2. Unpacking
Check the shipment against the packing list
and carton labels. Instrurnenls and
accessories may be packed separately. Smaller
Issue 5 Page 4
was
wcnowcont
items may be located under cardboard partitions
so check carefully for contents. If you are missing
any items please contact Crowcon immediately
Be prepared to quote the instrument’s serial
number which can be found at the bottom of the
label on the rear of the instrument.
Ensure batteries are fresh/charged prior to use,
See ‘Switch on Seouence’ (Section 5.1) tor details
of the battery level indicator.
3. Introduction
The Crowcon Gasman it is a personal gas
detector which can continuously monitor the level
of oxygen oi the presence of a single toxic or
flammable gas. It is designed to be worn by
individuals working in hazardous environments
such as oonlined spaces and will give a loud
audible and bright visual alarm warning when pre-
set concentrations of gas are exceeded.
It is a simple instrument to use. designed to
provide reliable service for many years. The
shape of the instrument has been designed to fit
oomlortably against the body and pose the least
restricu'nn to movement. It can tit in a pocket or
on a belt.
Datalogging is standard on all models providing
approximately 1 week capacity at a 1 minute
sampling rate, This capacity can be extended by
reducing the sampling rate (see Section 12).
Toxic and oxygen versions are fitted with alkaline
batteries which offer a life of 1 year" Flammable
versions are fitted With rechargeable nickel metal
Issue 5 Page 5
was
i—————————————
Gasman II Instruction Manual
Programmable from five
different tones, SSdBA at 1
metre. (92dEA at 1 ft).
hydride batteries which have a life of 10-12 hours' Audible alarms
and up to 1000 charge/discharge cycles
“ depending on aiarm incidence.
4. Specification
Interrnittenl blip for
discharged battery.
Selectable ‘confidence’ blip.
Weight 2109 (7.402) Fault warning.
Dimensions 130h X 60W X 30d mm
(5 1h X 2.4w X 1.2d inches) Display Custom 7 segment high
contrast LCD giving gas
Typical measuring 0-1OU% LEL flammabie gas, reading. Symbols for low
ranges 0—25% voiume Oz, battery. peak hold, zero
0-50ppm HzS, NH], mode, cal mode and alarm
OfSOOppm CO, annunciation. LED backlight.
0-5 pprri Ciz, PH}, _
0—10ppm 302, N03, Operatlng —20° to 50°C (-4°F to 122°F)
025W)“ HON, temperature range
0.gggPPM H7 Humidity 0-95% RH. non-condensing.
Typical alarm 20 & 40% LEL methane, Expected sensor Pellistnr 5 years, toxic gas 3
levels 19% and 23°41 oxygen. life yeas, oxygen 1 year.
10 & 20ppm
hydrogen sulphide, Batteries 1.‘iAh nickel metal hydride
50 & iOOppm rechargeable: 10-12 hours
carbon monoxide. between recharge. AA size
alkaline replaceable: Typical
Typical TWA alarm 15ppm STEL, 10ppm life 1 year-
mflif” m": 9“ ”EL (”fl Aspirator Manual bulb type with 2m of
SDOppm STEL, 50ppm
LTEL (ca).
Typical response methane 20 seconds.
hose, non-absorbent,
hydrocarbon resistant
times (Ten) oxygen 10 seconds, Approval code Toxic/oxygen: EEx la IIC T4
toxic gas 20 seconds (Europe) (T.,,,:55°C)
Fiammable:
Visual alarm Ultra bright flashing red EEX iad iIC T3 (rechargeabie),
indicators LED pair in alarm. T4 (non rechargeable)
issue 5 Page a issue 5 Page 7
HEB 11/99
___—————-
Gasman u Instmction Manual 5? CROWOON
(USA & Canada) Class 1. Division 1‘ Groups A 4-2 Battery Lifetime
B,C & D.
' Rechargeable flammable instruments
Standards EN50014, ENSOOZO. batteries last 12 hours on a full charge
(Europe) EN50018
(USA & Canada) UL913 ' Nun-rechargeable flammable instruments
' v t 24 h .
RF Immunity Tested to lECSO1-3 and “mg a'ka'me ”mes [as ”S
meets ENSOOBZ-Z , .
' Tux-c and Oxygen instruments last 1 year
RF Radiation Tested to EN55022 Class B using alkaline batteries, under normal usage
and meets EN50081-2 conditions.
Battery charging Standard charge rate 16
hours trickle charge will not
damage batteries Charger
Inpul11-29V DC. Mains
adaptors have 110 or 230V
AC inputs. Batteries must be
charged in an ambient 1
temperature between 0°C
and 40”C. l
4.1 lnstmment Settings
Unless otherwrse specified, instruments will be .
shipped from the factory with default settings
These cover alarm tones, logging period, and
detailed operation of each alarm point. Full
details are printed on the Configuration Report
supplied with each instrument. Those settings
which are changeable from the instruments
keypad are described in section 8
All oonfiguration settings may be viewed and
changed using a PC running the SetPortabIe
interface program (Section 12).
Issue 5 Page a issue 5 Page 9
11/99 11/99
Gasman II Instmction Maswsm‘
4.3 General Assembly
Key:
1 Gas Sensor
2 Fixing screw/charging contact
3 Small button
4 Calibration adjuster cover
5 Alarm LED lens
6 Alarm sounder
7 Top moulding
8 Gas legend
9 Display Window
10 Large button
11 Base moulding
12 Universal ciip
13 Certification iabeis
Issue 5 Page in
11/99
k CROMICON
5. Operation
5.1 Switch-on Sequence
Make sure you are in clean air. then swnch on
the instrument by pressing the iarge button.
The instrument tests all LCD segments, red alarm
LEDs and sounder for 5 seconds. then dispiays
the battery condition for 5 seconds before
entering monitoring mode. The battew condition
is indicated by the battery symbol and a number
representing the percentage battery canacitv
remaining.
NOTE: A reading below 20 indicates that
replacement or recharging is due. For the
first 4-5 charge cycles, rechargeable batteries
cannot hold a lull charge. Initial operation
tlme ls therefore around 7‘Ix hours.
The instrument is new ready to be used:
' The gas level wili be shown numerically on
the display.
' The insuument may be configured to display
nothing (aiarm only application).
' The display backlight is activated by pressing
and holding the large button.
- if the display shows an E code (e.g. 52)
instead of the gas ievel. this indicates a fauit
condition as defined in Section 11.1,
Figure 5 1 Typical monitoring display.
issue 5 Page 11
11/99
Gasman Il Instruction Manual
NOTE: It is possible that the instrument may
display an alarm condition upon entering the
monitoring mode (indicated by a flashing alarm
symbol). This is due to the sensor taking time to
settle after SWitch on It is NOT a fault Press the
large button to cancel the alarm after a few
seconds.
lf configured to do so, the instrument will give an
intermittent audible blip and/or visual red flash to
indicate correct functioning at the instrument.
Selection of these ‘confidenoe‘ signals Will aflect
battery life according to the table in Section 4.2
Pressing both buttons together will swuch the
instmment off The instrument may be configured
in such a way that it is not possible to turn it off via
the push buttons. in this case. only a supervisor
with a computer link can switch the instrument off
5.2 Display Symbol Guide
Figure 5 2 Display symbols
The gas level is continuously shown on the
display. The surrounding symbols will only be
displayed when the appropriate function or
warning is active.
issue 5 Page iz
11/99
it; miiflfiiiwmimtli
A Peak hold
indicates that the reading displayed is the highest
level recorded since the instrument was switched
on or reset. For oxygen, Peak Hold records the
lowest value encountered. Peak Hold values can
be toggled on and off by pressing the small button
when the unit is on. The symbol Will come on it
Peak Hold is operational, The large button is
used to reset the peak value when the symbol is
displayed.
Battery low
When this symbol flashes and the sounder emits
an intermittent blip, it is an indication that there is
less than 10% of battery lite remaining. A
toxic/oxygen instrument may run for weeks in this
condition allowing time to schedule a battery
replacement service. A flammable instrument will
run tor ‘I: hour at most and should theretore be
recharged immediately.
v Zero
Indicates unit is in adiustzero mode. See
Section 8.3.
A Calibrate
Indicates unit is in adjust calibration mode.
See Section 8.4.
b Alarm 1
When the first alarm level is reached, this symbol
will flash and the visual and audible alarms Will be
activated. See Section 7, Alarm types.
lssue 5 Page 1:3
11/99
Gasman II Instruction Manual
b Alarm 2
When the second alarm level is reached, this
symbol will flash and the visual and audible alarms
Wl|| be activated. See Section 7, Alarm types.
0 15 Minute TWA Alarm (STEL)
Toxic versions have TWA alarms in addition to the
two levels of instantaneous alarm. If the 15
minute exposure level is reached, this symbol will
flash and the visual and audible alarms will be
activated. The minimum averaging time before a
STEL alarm can be triggered is 1 minute.
@ a hour TWA Alarm (LTEL)
It the a hour exposure level is reached. this
symbol will flash and the visual and audible
alarms will be activated The minimum averaging
time before a LTEL alarm can be triggered is is
minutes.
Personnel should not continue to work after a
TWA alarm occurs as this indicates the maximum
sale cumulative exposure has been reached.
Workers should remove themselves to safety or
use breathing apparatus
Issue 5 Page 14
11/99
PB CROWOON
6. Batteries
WARNING - Battery charging or replacement should
only take place in a SAFE AREA, i.e. no explosive risk.
WARNING ~ to ensure Intrinsic Safety, the charger
must only be used with DC supplies as specified in
Section 6.3.
6.1 Recharging
Flammable gas versions are normally supplied with re-
chargeable batteries. though a non-rechargeable type
using alkaline batteries is available.
To recharge. connect power to the charger and place the
instrument in the cradle. The charger's red LED will light
while the instrument is being charged. Full recharge from
flat takes 15 hours, with the instnlmenl switched oft. When
tully charged, the green LED will illuminate on the charger
Once the charge cycle is complete. the red LED will
occassionally light tor a minute or so to ensure the
batteries are kept topped up.
If the instrument is not In use. it should he charged once
per fortnight. or it can be stored permanently in its charger
without damage. If it is left uncharged for 3 weeks or
more, the batteries may self-discharge to a point where
the battery charger cannot supply enough charge current
to restore the batteries to a iully charged state. If this
occurs, a ‘boast~charge’ can be prowded by pressing the
button which is mounted on the rear of the charger. This
can be accessed through the top-lett mounting hole with a
blunt object such as a ballpoint pen.
The charger also acts as a comms interface for all
instrument types. Non-rechargeable units will not be
recharged in this instance.
The charger makes contac1 with the instrument via the two
side fixing screws. As these are electronically protected,
no harm will come from these contacts being short
circuited during use
Issue 5 Page 15
1 1/99
——*_—_——
Gasman Il instruction Manual
6.2 Changing the batteries
Toxic gas and oxygen versions are supplied With
alkaline batteries which should power the
instrument for a year.
' Disassemble in a clean. dry environment and
observe anti-static handling precautions.
Remove side fixing screws
Remove calibration adjuster cover
Slide lower case section from top section.
Remove batteries from clips.
Replace batteries using only approved types"
ensuring correct polarity orientation.
' Refit lower case section and screws ensuring
seals are correctly fitted in grooves.
“Duracell MN15DO LRE
Ever Ready Energizer LRGBA
6.3 Charger Supplies
These must not exceed 29 volts DC (11 to 16V is
ideal). They can be either.-
(a) a mains DC power supply such as those in
Section 14.2, "Spare Parts“ meeting
EN60742 insulation class Il (Europe) or
ULiatO insulation class it (United States) or
(b) a battery or other isolated DC source
7. Alarm Types
There are two instantaneous alarms; level 1 and
2. For toxic gas instruments, there are also two
time weighted average (TWA) alarms which
operate at short term (15 minute) and long term
(8 hour) exposure limits. All alarm thresholds can
Issue 5 Page is
11/99
fiCROWGON
be adjusted from the instrument keypad (see
Section 8) by means of a screwdriver. Alarm
thresholds may also be set via the computer
interface (see Section lZ) and the following
parameters may be set for instantaneous alarms:
' Normally triggered on a rising level, alarms
may be set to trigger on a falling level as with
oxygen deficiency alarms.
' Alarms may be latching, requiring manual
reset. or self clearing when the hazard has
passed.
' Normal alarms cannot be cleared whilst the
gas hazard persists. it is possble to set level
1 so it may be silenced (the red LEDs will
continue to flash). This allows the user to set
a ‘pre-alarm’ waming at a low gas level and a
non-silenceable alarm at a higher level.
‘ Unused alarms may be deactivated.
' The level 1 alarm may be set to be visual only
(not oxygen units).
If any alarm event is triggered, the red LEDs will
flash and the sounder will emit a loud tone. Each
alarm type has a different tone sequence which
can be selected from a menu if usmg
SetPortable sofwvare (Section 12). Alarm 2's tone
takes precedence over alarm is tone. The alarm
type will be indicated by a flashing symbol on the
LCD (see Section 5.2) If either of the TWA (time
weighted average) symbols appear on the
display, this indicates that the cumulative
exposure to toxic gas has been reached for an
8—hour shift or a is minute ‘window' UK Health
8. Safety regulations require that workers should
leave the hazardous area once they have
exceeded this close. A TWA alarm cannot be
issue 5 Page 17
11/99
m—
Gasman II Instruction Manual
manually reset. The 15 minute TWA alarm will
self clear when the average exposure over the
previous ‘i5 minutes falls below the set threshold.
The a hour TWA alarm will self clear when the
average exposure over the previous 8 hours falls
below the set mreshoid. Average exposure values
are cleared when the instmment is switched off.
A worker should not resume work where the risk
of gas exposure persists until the Safety Officer
declares it safe.
The large button may be used to silence or clear
certain instantaneous alarms as the configuration
permits
8. Keypad Adjustments
When the instrument is off, calibration and alarm
settings can be viewed and adjusted if required.
8.1 Viewing settings
‘ Press both buttons to turn instrument off
' Press and hold small button to View the zero
level The V symbol appears The
numbers will flash until the reading has
stabilised. The reading cannot be adjusted
until the digits stop flashing.
Note. The zeroinq facilitv is not available on
oxygen units.
' Release small button then press and hold
again to view the calibration level. The A
symbol appears. Unless calibration gas
issue 5 Page is
was
» GROWOON
is being applied to the sensor, the display
should read zero, or 20.9 lor oxygen.
Release small button then press and hold
again to view Alarm 1. The 1. symbol
appears and the Alarm 1 level is displayed
Release small button then press and hold
again to view Alarm 2. The E symbol
appears and the Alarm 2 level is displayed
Release small button, then press and hold
again to view the 15 minute STEL. The O
symbol appears and the 15 minute STEL
alarm level is displayed.
Release small button then press and hold
again to view the 8 hour TWA. The @
symbol appears and the 8 hour TWA alarm
level is displayed.
Release small button, then press and hold
again to bring the display back to zero mode.
If the small button is released and not pressed
again for 1 minute or more the sequence
automatically starts back to zero.
8.2 Adjusting Settings
Rotate the calibration adjuster cover to line up
the mark with the mark on the case.
Unplug the cover. It is held captive and
should not be fully removed.
Insert the small screwdriver supplied into the
adyustment potentiometer.
Select the setting to be adjusted With the
small button as described in Section 8.1.
The current value is displayed and can be
issue 5 Page is
was
~———“——__—._
Gasman ll Instruction Manual
adjusted by rotating the screwdriver.
‘ Only one potentiometer covers all functions
adjustments are stored by the instrument.
' Potentiometer is only active while small button
is held down
' Iltne potentiometer is turned to one ol its end
stops, the reading continues to advance in the
relevant direction until backed oil. It is
advisable to set the pot back to its central
position after releasing the small button in
readiness for the next adiustmenl.
8.3 Zeroing v
The reading cannot be adiusted until the digits
stop flashing. This is to allow the sensor to
stabilise after energlsing A ‘short»cut’ zero is
provided by pressing the large button whilst the
small button is held down in zero mode. Only
perform this operation in fresh air
Note. The zeroing facility is not provided on
oxygen units as the reading should be calibrated
to 2049% in lresh air.
3.4 Calibration A
As with zeroing, the reading will flash until the
sensor has stabilised. Additionally time must be
allowed for the reading to level offence
calibration gas has been applied. The final
reading can then be adjusted. A ‘short—cut‘
calibration to 20.9% on oxygen units is provided
by pressing the large button whilst the small
button is held down in calibrale mode.
Issue 5 Page 20
11/99
l“. millilir’tfil‘lilllhflllffltlhll
Gas connection for calibration requires the use at
the Calibration Adaptor (Section 9.1).
The sample tube should be connected to a gas
bag filled with calibration gas. Use the hand bulb
to draw the gas over the sensor. If using a
cylinder of calibration gas, connect it via a
pressure regulator and flcwmeter to the adaptor
inlet. Disconnect the hand bulb and allow waste
gas to vent to atmosphere or a collection bag. A
flowrate of 0.5 — 1 Ilmin is required for an accurate
calibration. Gas readings can be adjusted via the
keypad (Section 8.4) or with the SetPonabIe
computer interface (Section 12).
9. Accessories
9.1 Calibration Adaptor
The calibration adaptor is a push—tit device for
connecting calibration gas or a remote gas sample
to the sensor. It is supplied with a 2m length of
sample tubing and a rubber hand bulb. The
sample tube can be lowered into a manhole, lor
example, to enable pro-entry checks to be made.
The hand bulb should be squeezed in a consistent
manner (every 2-3 seconds) for at least a minute
to draw a reliable sample up to the sensor.
9.2 Universal Clip
The combined belt and pOCKel clip can be used
with a trouser belt or clipped onto a pocket. The
issue 5 Page zi
11/99
77, ,
Gasman II Instruction Manuai
instrument may be worn inside the pocket,
providing the sensor protrudes. A shoulder strap
is avaiiable for fixing to the top of this clip
9.3 Rubber Boot
This is a protective cover for use in the most
arduous environments it can remain in place tor
battery charging.
1D. Routine checking 8. Maintenance
Gasman II is designed to operate With little
maintenance under most oonditions. The following
routine maintenance is recommended.
WARNING - Substitution of components may
impair intrinsic satety.
1041 General
if used in dirty conditions, a regular wipe with a
damp cloth will help in viewing the dispiay and
maintaining operation of the pushbuttons This is
also recommended for the side fixing screws to
maintain good contact for battery charging or data
communication.
10.2 Sensor Filter
Dirt should be removed from the sensor apertures
as this may impede diffusion. For access to the
sensor filter, remove the fixing screws and top
mouiding (Section 10.4).
issue 5 Page 22
was
P GROWOON
10.3 Zero and Calibration
Because all gas sensors change their
performance characteristics over time, the
following checks are recommended:
' Zero Every 1 month
‘ Gas response' Every 1 month
' Calibration Every 6 months
instructions on how to make zero and calibration
adjustments from the instrument keypad are in
Section 6. Refer to the manual supplied with
SetPortabIe software for use of a PC to make
adjustments (see Section 12).
“Due to the safety nature of gas detection
instruments, It is recommended that sensors
are regularly gas checked. Instrument sensors
may be adversely affected by certain
environments (Section 13). A monthly test
with a known gas mixture will ensure that the
instrument responds with appropriate
indications and alarms.
10.4 Sensor Replacement
Required when instrument fails to calibrate due
to low sensor output.
Key:
1 Top moulding = ='
2 Fixing screw f
3 Gas sensor 0
4 Sealing ring
5 Sounder ‘0‘ ring ®IJ =\©
6 Main ‘0' rings 5 a
Figure 10.1
Issue 5 Face 23
11/99
Gasman ll Instruction Manual
On toxic and oxygen instruments, it is practical to
replace the alkaline batteries at the same time
(Section 6.2).
' Disassemble in a clean, dry enVironment and
observe anti-static handling precautions.
' Switch olf instrument
' Remove side fixing screws
' Remove top moulding
' Unplug sensor
’ Replace sensor with sarrie type only
' Re-use sensor sealing ring
' Ensure main body ‘0‘ rings and sounder ‘O‘
ring are in place before refitting top moulding,
' Secure With screws
' Zero and calibrate instrument
11. Troubleshooting Guide
instrument may be customer configured such that
' display is blanked
' no ‘confldence‘ signals given
' cannot switch off
' adjustment potentiometer not active
These features may be individually re—enabled if
required (Section 12).
If the instrument is reading low levels of gas in
fresh air, it needs to be zeroed (Section 8.3).
Replace or recharge batteries if unit will not
switch on. If rechargeable instruments do not
seem to be charging. force some charge into
issue 5 Page 24
‘l1I99
9L i’t'étlFitilfltWflmM
them by using the hidden button at the back of
the charger, then reset the instmment by removing
and rte-inserting a battery. (If rechargeable
batteries are left uncharged for many weeks. they
gradually self—discharge until the normal charging
methods do not work).
11.1 Error codes
The instrument may display the following
warning codes:
E0 : Calibration due: FATAL (accept by pressing
large button) Do not ignore because in
4 weeks it will become...
E01' Calibration Expired' FATAL The period
between regular calibrations has elapsed.
Re-zero and calibrate (Section 8),
E02: Zero Failed: FATAL. Results from
attempting to Zero a channel exposed to
gas (including an oxygen channel in air).
The function request is aborted without
effect. Refzero (Section 8).
E03: Calibration Failed: WARNING. The gain
is being set out ofrange indicating sensor
failure or incorrect calibration gas.
Re—zero and calibrate (Section 8).
Change sensor if necessary (Section 10.4)
E04: Sensor Overrange: Warning will clear
when restored to fresh air. Gas response
should be rechecked.
E05: High/low Temperature: Gas readings may
not be reliable at these extremes. Warning
will clear when temperature is in range.
E06: Electronic Hardware Failure' FATAL.
The instrument should be sent for repair.
E07: Configuration Invalid: FATAL. Down load
Issue 5 Page 25
11199
—————___—__—_—_—-——
l—’—
Gasman ll Instruction Manual
original configuration (see Section 12)
or return lor service.
if a FATAL error is rectilied. a lower priority
error code may then be displayed
E0. E01, 502, E03 are normally non fetal but may
be configured as fatal using SetPortable.
Ari instrument with a FATAL error may not be
used but may only be switched otT or rectified
The instrument will raise an audible alarm in
the event of a fault.
12. Datalogging and Datacommunications
Gasman II has an integral datalogging
feature which takes regular readings and stores
them in memory. When the memory is full,
oldest data is overwritten so the instrument Will
always contain the most recently accumulated
data
As standard, a reading is taken every minute
which Wl“ give a minimum logging capacity of
30 hours. Ifgas readings are zero or unchanging,
this capacrty is extended by compression
software to as much as 3000 hours. The basic
capacity can be altered by changing the sample
rate.
Note: if batteries fully discharge, logged data
may be lost.
To change sample rate. upload the log. clear
the log or alter any other instrument settings, it is
necessary to use a PC running SetPortabIe
software. To view the log, use Logmanager.
Historical time is calculated relative to current
PC time, so ensure the date and time are set
issue 5 Page as
11/99
fr GRO‘MCON
correctly on your computer before uploading
logged data.
SetPortzble and Logmanager software is
supplied with its own manual, Crowoon stock
number M07-119.
12.1 Hardware Interface
Connection to the PC is via the charger unit
which has a computer ‘D' socket at the rear.
' Use the meoon supplied cable to connect
between the charger and the PC serial port.
Check the labelling of this lead as ‘it only
works one way round.
' Ensure power is connected to the charger
unit.
' The instrument should be switched on if it is
to be zeroed or calibrated.
Gasman |I uses a catalytic flammable gas sensor
which operates in the presence of oxygen. Prior to
entering a confined space. it is advisable to check
oxygen concentration in addition to combustible
gas concentration. Oxygen levels below 10% will
reduce a flammable gas reading.
The performance of catalytic sensors may be
permanently degraded if exposed to silicones,
sulphur containing gases (such as HzS), lead or
chlorine compounds (including chlorinated
hydrocarbons).
The unit is not suitable for use in ambient
temperatures above 500 (122°F) and electro-
Issue 5 Page 27
11/99
—_—————__—__.——.
Gasman II Instruction Manual
chemical toxic gas sensors may be degraded at
these levels.
Water should not be allowed to collect on the
sensor as thls may impede gas diflusion. Use
Will'l care in wet or humid environments. and
check response after use.
Persistent exposure to high levels ol toxic gas
will shorten the life of the sensor. If the gas is
corrosive (e.g. hydrogen sulphide) damage may
occur to metal components.
Sensors may be cross sensltlve to other gases.
lr unsure, contact Crowcon or your local agent,
Use of high power radio transmitters in close
proximity to the instrument may exceed rated RFl
lmmunity levels and cause erroneous indications.
If such problems are experlenced, remove
antennae to a reasonable separation from the
lnstrument (e 9 30cm).
14. Accessories & Spare Parts
14.1 Accessories List
001613 Gasman II Charger 12V DC input
C01628 Gasman lI Charger with 230V UK
power supply
001629 Gasman ll Charger with 230V
European power supply
001630 Gasman ll Charger with 110V US
power supply
C01631 Gasman ll Charger with 230V power
supply » no plug
001632 Gasman I] Charger with 110V power
supply - no plug
lssue 5 Page 23
11/99
001547
001327
CD1315
(301256
001394
(301451
co1e14_
001097
001511
001552
D CROWCOM
Multi-charger nbbon cable
Cornrns lead
SetPorlabIe software 3 1/2" disketle
Vehicle charging lead
Shoulder strap
Waist belt
Aspirator complete with flow adaptor.
tubing. bulb & pouch
Aspirator probe
Alarm earphone wlth 1.5m of tubing
Autocalibrator I| (requires PC 8-
charger)
14.2. Spare Parts List
C01009
001347
DE0102
ED1451
DE0111
DE0112
DE0113
E01631
M04427
M04428
M01558
M03603
M04429
M04451
M04337
M04430
M04461
M0443?
501708
801707
501709
501710
lssue 5
11199
205mm Allen key
2mm Allen key
Rechargeable battery (3 required) -
Flammable instrument
AA size alkaline battery, 3 required -
toxic & oxygen instruments
Oxygen sensor
Carbon monoxide sensor
Hydrogen sulphlde sensor
Flammable gas sensor
Mouldlng set
Universal pocket/bell clip
Pocket clip spring
Fixing screw - (2 per instrument)
Sensor sealing ring
Calibration cover (requlres ‘O' ring)
Calibration cover ‘0' rlng
Main ‘0' ring (2 per inst.)
Sounder ‘0‘ ring
Rubber protective boot
Oxygen pcb assembly
Toxic pcb assembly
Flammable pcb assembly
Display pcb assembly
Page 29
,———_
Gasman II Inslruction Manual
issue 5
11/99
SERVICE RECORD
Location:
Comments
D CROWGON
Crowcmn may also be reired upon for :
Portable mulli-gas monitors for simultaneous
detection of up to four gases
Fixed equipment for continuous plant
monitoring.
Calibration and repair at our instrument
workshops.
On site service and maintenance,
Page an
Issue 5 Page 31
11/99

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
Modify Date                     : 2000:01:25 18:41:12Z
Create Date                     : 2000:01:25 17:57:25Z
Creator                         : Acrobat 4.0 Scan Plug-in for Windows
Producer                        : Acrobat 4.0 Scan Plug-in for Windows
Page Count                      : 15

EXIF Metadata provided by EXIF.tools