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CE DECLARATION OF CONFORMITY

MONARCH INSTRUMENT
Instruction Manual

As Manufacturer:

Monarch Instrument
Division of Monarch International Inc.
15 Columbia Drive, Amherst NH 03031 USA
declares under Monarch’s sole responsibility that the product:

Pocket Laser Tach 200

to which this declaration relates is in conformity with the following directives and
standards when installed and operated in accordance with the user manual:

Directives:

EMC 89/336/EEC

Standards:

EMC: EN61326:1997
Electrical Safety: IEC61010-1:2001
Laser Safety: IEC60825-1:2001

References: Retlif Testing Laboratories, (Report No. R-4283N)
Technical Construction File PLT-0704 of July 2004

24th June 2004
Manufacturer (Amherst,NH)

Pocket Laser Tach 200
(PLT200)
Tachometer / Rate Meter / Totalizer / Timer

Alan Woolfson, VP Engineering (Authorized Signature)

Printed in the U.S.A.
Copyright 2004 Monarch Instrument, all rights reserved

1071-4838-112

15 Columbia Drive
Amherst, NH 03031-2334 USA
Phone: (603) 883-3390
Fax: (603) 886-3300
E-mail: support@monarchinstrument.com
Website: www.monarchinstrument.com

SAFEGUARDS AND PRECAUTIONS

14.0 OPTIONS /ACCESSORIES
T-5

Reflective Tape, 5 foot [1.5 m] roll, ½ inch [13 mm]
wide

RCA

Remote Contact Assembly with 10 cm wheel, concave
and convex tips

WARNING - This product emits a visible beam of laser
light. Avoid exposure to the laser radiation. The use of
optical viewing aids (binoculars, for example) may
increase the ocular hazard.

CTE

Concave/convex contact tips and 10 cm linear contact
wheel

12 inch Wheel

12 inch circumference wheel for use with RCA

CAUTION - The laser beam should not be intentionally
aimed at people or animals.

CA-4044-6

6 foot Input/Output cable, 1/8” mono phone plug to
BNC connector

CAUTION - Use of controls or adjustments or
performance of procedures other than those specified
herein may result in hazardous radiation exposure.

ROS-P

Remote Optical Sensor

ROS-P-25

Remote Optical Sensor with 25 foot cable

EC-25P

25 foot extension cable for all sensors

MT-190-P

Amplified Magnetic Sensor

IRS-P

Infrared Sensor

CC-10

Padded Nylon Carrying Case

CC-11

Latching Carrying Case for Pocket Tach and accessories

CAL-N.I.S.T.

N.I.S.T. Traceable Certificate of Calibration

Read and follow all instructions in this manual carefully,
and retain this manual for future reference.
Do not use this instrument in any manner inconsistent
with these operating instructions or under any
conditions that exceed the environmental specifications
stated.
This instrument is not user serviceable. For technical
assistance, contact the sales organization from which
you purchased the product.
Monarch Instrument’s Limited Warranty applies.
www.monarchinstrument.com for details.

See

Warranty Registration and Extended Warranty coverage
available online at www.monarchinstrument.com.

24

12.0 BATTERIES

TABLE OF CONTENTS

When displayed, replace batteries.
1.0
2.0
3.0
4.0
5.0

Remove battery
cover

Install two 1.5V
“AA” alkaline
batteries

6.0

7.0

NOTE: Both
batteries face the
same direction.

13.0 CLEANING

8.0

9.0

10.0

To clean the instrument, wipe with a damp cloth using mild soapy solution.
11.0
12.0
13.0
14.0
23

OVERVIEW ............................................................................. 1
FEATURE LOCATIONS ............................................................ 1
LCD DISPLAY SYMBOLS ....................................................... 2
PLT200 SPECIFICATIONS ...................................................... 3
PREPARATION FOR MEASUREMENT .................................... 7
5.1 Non-Contact Preparation ............................................. 7
5.2 Direct Contact Preparation .......................................... 7
5.3 Connecting External Sensors ..................................... 8
TACHometer Mode ................................................................ 9
6.1 TACHometer Setup ....................................................... 9
6.2 TACHometer Operation .............................................. 11
RATE Mode ........................................................................... 12
7.1 RATE Setup ................................................................. 12
7.2 RATE Operation .......................................................... 14
TOTALizer Mode .................................................................. 15
8.1 TOTALizer Setup ......................................................... 15
8.2 TOTALizer Operation .................................................. 18
TIMER Mode ......................................................................... 19
9.1 TIMER Setup ................................................................ 19
9.2 TIMER Operation ......................................................... 20
MAKING MEASUREMENTS .................................................. 21
10.1 Non-Contact Measurements ..................................... 21
10.2 Direct Contact Measurements .................................. 21
INPUT / OUTPUT .................................................................. 22
BATTERIES ........................................................................... 23
CLEANING ............................................................................ 23
OPTIONS /ACCESSORIES ................................................... 24

1.0 OVERVIEW

11.0 INPUT / OUTPUT

The Pocket Laser Tach 200 is a precision hand-held multifunction
Tachometer, Ratemeter, Totalizer and Timer. It is programmable to display
directly in Revs, Inches, Feet, Yards, Miles, Centimeters and Meters or
function as a stopwatch or interval timer. Input / output sockets allow for
remote sensing and pulse output to external indicating devices. For ease of
use, the instrument can be “Locked-on” for continuous operation.

Input:

Accepts remote sensor or
Remote Contact Assembly
(RCA). 1/8” (3.5mm) stereo
phone plug.

Output: 1 pulse per revolution TTL
output on internal operation.
Pulse repeater with external
sensors. 1/8” (3.5mm) mono
Input socket (S)
phone plug.

2.0 FEATURE LOCATIONS
LCD display

Output socket (T)

Min / Scroll
Down arrow

Menu / Select
and Lock-on
button

Tripod mounting bushing
(underside)

Signal Input
+3V Out to
Sensor

Start / Reset button

Common
(GND)

Belt clip

Input socket

Common
(GND)
+3V Out to
Sensor
Signal Input

Input Connector Detail (Stereo plug)

Output socket
Max / Scroll Up
arrow
Battery compartment

Signal Input

Common
(GND)

Common
(GND)

Signal Input

AVOID EXPOSURE - LASER RADIATION IS
EMITTED FROM THIS APERTURE
Output Connector Detail (Mono plug)
1
22

10.0 MAKING MEASUREMENTS

3.0 LCD DISPLAY SYMBOLS

10.1 Non-Contact Measurements
OR

Hand-held
Laser

External Sensor (ROS shown)
(Not shown:
Light
IRS-P,
MT-190P)

10.2 Direct Contact Measurements
Rotational

Linear

(Use concave
tip for small
shafts)

On Target Indicator. Blinks on whenever there is an input
signal. Will appear to be solid on at higher frequencies.

to RCA

from PLT200

Low Battery icon. Indicates that the batteries are low and
need to be replaced.

from PLT200

ONLY USE MODERATE PRESSURE
WARNING: Making measurements in direct contact with rotating
equipment can be dangerous. Keep all loose clothing and hair
away from exposed moving machinery. Keep the hand holding
the instrument well behind the back end of the Remote Contact
Assembly. Properly replace all machinery guards after completing
measurement. Do not use for rotation greater than 20,000 RPM.
21

Times Ten icon. Indicates that the value shown is ten times
that which is displayed.
Laser Indicator. Red laser is on when this indicator is
illuminated.
Lock icon. Indicates that the unit is “Locked” on and making
continuous measurements (Lock mode).

2

4.0 PLT200 SPECIFICATIONS

8.

Save and
advance

9.

Exit Setup –
Ready to
measure

Laser Specifications:
Classification: Class 3R (per IEC 60825-1 Ed 1.2 2001-8)
Complies with FDA performance standards for laser products except
for deviations pursuant to Laser Notice No. 50, dated July 26, 2001.
Maximum Laser Output:
Pulse Duration:
Laser Wavelength:
Beam Divergence:
Beam Diameter:
Laser Diode Life:

3mW
Continuous
650 nm
< 1.5 mrad
4 x 7 mm typical at 2 meters
8,000 operating hours MTBF (1 year
warranty)

Unit will remember these settings (including lock on/off) even if turned off
and back on.

9.2 TIMER Operation
Measure:
Manual

Non-Contact Specifications:
Ranges:

RPM
RPS
RPH

5 – 200,000
0.084 – 3,333.3
300-999,990

Auto

Resolution: Fixed:
1 (10 above 99,999)
Auto-ranging: 0.001 to 1.0 (10 above 99,999)
Accuracy:

±0.01% of reading or resolution limit

Range:

Contact Tips:
0.5 to 20,000 RPM
10 cm / 12-inch Wheel: 0.5 to 12,000 RPM

Resolution: Fixed:
Auto-ranging:
3

1 (10 above 99,999)
0.001 to 1.0 (10 above 99,999)

Each press toggles Start and Stop

OR Start and Stop triggered by
Remote Optical Sensor (ROS)

Reset

With Timer stopped Resets time to 00:00.0

Lap

With Timer running Stops at elapsed time to date.
To continue, press again.

Operating Range: up to 25 feet (7.62 m) or up to 70 degrees off
perpendicular to T-5 tape target
Contact Specifications using optional Remote Contact Assembly:

DONE, then Units
selected

Power Off

OR Automatic after 90 seconds
if unit not Locked on
20

9.0 TIMER Mode

Contact Specifications (continued):
Accuracy:

9.1 TIMER Setup
1.

Turn Power
ON

Last Units selected
are displayed

1a. To toggle Lock
On/Off
Press and Hold
2.

3.

Enter selection
of Mode

4.

Select TIMER
Mode

5.

Save and
advance

6.

Enter selection
of Timer
function

7.

19

Locked On

Enter Setup
Mode

Select Timer
function

Revs:
Linear:

±0.05% of reading (RPM) or resolution limit
(with no slippage)
±0.5% of reading or resolution limit (with no
slippage)

Contact Measurements Ranges:
TACHOMETER:
Revolutions per Minute (RPM) 0.5 to 20,000 RPM
Revolutions per Second (RPS)
0.0833 to 333.33 RPS
Revolution per Hour (RPH)
30 to 999,990 RPH
RATES:
Inches per Second

Last Mode selected
is displayed
OR

Repeat until
TIMER displayed

MAN or AUTO

OR

Toggles between
Manual and
Auto

Wheel Circumference:
10 cm: 0.033 to 1312.3 IPS
12 in:
0.100 to 2,400.0 IPS

Inches per Minute

10 cm:
12 in:

1.969 to 78,740 IPM
6.000 to 144,000 IPM

Inches per Hour

10 cm:
12 in:

118.11 to 999,990 IPH
360.00 to 999,990 IPH

Feet per Second

10 cm:
12 in:

0.003 to 109.36 FT/S
0.009 to 200.00 FT/S

Feet per Minute

10 cm:
12 in:

0.164 to 6,561.7 FT/M
0.500 to 12,000 FT/M

Feet per Hour

10 cm:
12 in:

9.843 to 393,700 FT/H
30.000 to 720,000 FT/H

Yards per Second

10 cm:
12 in:

0.001 to 36.453 YPS
0.003 to 66.667 YPS

Yards per Minute

10 cm:
12 in:

0.055 to 2,187.2 YPM
0.167 to 4,000.0 YPM
4

Contact Measurements Ranges (continued):
RATES:
Wheel Circumference:
Yards per Hour
10cm: 3.281 to 131,233 YPH
12 in:
10.000 to 240,000 YPH
Miles per Hour

10 cm:
12 in:

8.2 TOTALizer Operation

0.002 to 74.564 MPH
0.006 to 136.36 MPH

Centimeters per Second 10 cm:
12 in:

0.084 to 3,333.3 CM/S
0.21 to 3,048.0 CM/S

Centimeters per Minute 10 cm:
12 in:

5.000 to 200,000 CM/M
15.240 to 365,760 CM/M

Centimeters per Hour

10 cm:
12 in:

300.00 to 999,990 CM/H
914.40 to 999,990 CM/H

Meters per Second

10 cm:
12 in:

0.001 to 33.333 M/SEC
0.003 to 60.960 M/SEC

Meters per Minute

10 cm:
12 in:

0.050 to 2,000.0 M/MIN
0.153 to 3,657.6 M/MIN

Meters per Hour

10 cm:
12 in:

3.000 to 120,000 M/H
9.144 to 219,460 M/H

OR

Measure

Press and hold

Lock on

Recall Max

Max Speed

Recall Min

Min Speed

If unit is
Locked on:

Resets Max/Min and Total

Power Off

OR Automatic after 90 seconds if
unit not Locked on

TOTALIZER:
Counts: 0 to 999,999
Scale Totals in Inches, Feet, Yards, Centimeters or Meters
Input:
Internal or External optics or linear contact wheel
Timer Specifications:
Minutes:Seconds.Tenths to 99:59.9
Accuracy:

±0.2 second

Resolution: 0.1 second
5

18

TOTALizer Setup (continued):
9.

Enter selection
of number of
decimal places

10. Select decimal
places

NONE, 1, 2 or 3

Display:

5 x 0.5” (12.7mm) numeric digits plus 5 Alpha-numeric LCD

Batteries:

2 “AA” 1.5 V
(DC) alkaline included
(Note: Batteries are NOT rechargeable.)

Battery Life: 30 hours continuous typical with batteries provided
OR

Repeat until
desired decimal
places displayed

11. Save and
advance

External Input:
Absolute max: -0.3 V to 5 V

(DC)

Minimum:

low below 1.2 V and high above 2 V (TTL compatible)

Edge:

Triggers on Positive edge

Power Out:

3.0 V nominal, approx. 2.8 V @ 20 mA max

Pulse Output: 0 V to 3.3 V
(DC) pulse
Same shape as External Input signal or high when internal
optics sees a reflection

12. Exit Setup –
Ready to
measure
Units = COUNT:
DONE,
then Units selected

Rotational/Linear Units:
DONE,
USE CONTACT TIP or
[wheel selected],
then Units selected

Unit will remember these settings (including lock on/off) even if turned off
and back on.

Dimensions:

6.92” (17.58 cm) H x 2.4” (6.10 cm) W x 1.6” (4.06 cm) D

Weight:

Approx. 7 oz. (210 g)

This product is designed to be safe for indoor use under the following
conditions (per IEC61010-1).
Installation Category II

per IEC 664

Pollution Degree Level II per IEC 664
Temperature: 40 °F to 105 °F (5 °C to 40 °C)
Humidity:

17

Maximum relative humidity of 80% for temperatures up
to 88 °F (31 °C) decreasing linearly to 50% relative
humidity at 100 °F (40 °C). Humidity non-condensing.

Specifications subject to change without notice.

6

5.0 PREPARATION FOR MEASUREMENT

6.

5.1 Non-Contact Preparation

2. Apply 1/2”
square T-5
Reflective
tape
For Small Shafts:

Different options displayed for
Internal or External operation.

Internal or External ROS: External RCA:
COUNT
Rotational: REV
Only
Linear: INCH, FEET,
YARDS, CM, METER

For Internal operation (Red laser) or External operation
using optional Remote Optical Sensor (ROS-Red LED).
1. Clean
Shaft

Enter
selection of
Units

7.

Select Units

8.

Save and
advance

As small as 1/8” wide
on side or radius edge

OR

Repeat until
desired Units
displayed
OR

COUNT or REV
Only for Linear Units:
8a. Enter selection
of Wheel

5.2 Direct Contact Preparation
For External operation ONLY using optional Remote
Contact Assembly (RCA).

8b. Select Wheel

Select and install contact option:
8c. Save and
Advance

1. Contact Tip (Convex tip shown.
Use Concave tip for small shafts.)

Linear Units
Last Wheel
selected is
displayed

OR

Toggles
between
10CM and
12IN

Align flats

7

16

8.0 TOTALizer Mode

2. 10 cm Wheel

OR

3. 12 inch Wheel

8.1 TOTALizer Setup
1.

Turn Power
ON

Different messages displayed for
Internal or External operation.

Internal or External ROS:
Last Units
selected

External RCA:
EXTRN, then scrolling
message, then last
Units selected

5.3 Connecting External Sensors

1a. To toggle Lock On/
Off
Press and Hold
2.

Enter Setup
Mode

3.

Enter
selection of
Mode

Tighten screw
securely into flat
on shaft.

Install with
pin in shaft
fully seated
in slot.
Tighten
screw.

Locked On

Last Mode selected
is displayed

€
S

Plug sensor into
Input socket

In

15

4.

Select
TOTAL
Mode

5.

Save and
advance

OR

Repeat until
TOTAL displayed.

Remote Contact
Assembly (RCA)
(shown with optional 12 inch wheel)

Remote Optical
Sensor (ROS-P)

Infrared Sensor
(IRS-P)

Magnetic Sensor
with Amplifier
(MT-190P)

8

6.0 TACHometer Mode

11. Save and
advance

6.1 TACHometer Setup
1.

Turn
Power
ON

Last Units selected are
displayed

1a. To toggle Lock
On/Off
Press and Hold
2.

3.

4.

5.

6.

9

Locked On

Enter
Setup
Mode

Unit will remember these settings (including lock on/off) even if turned off
and back on.

Measure
Last Mode selected is
displayed
OR

OR

Press and hold

Lock on

Recall Max

Max Speed

Recall Min

Min Speed

Repeat until TACH
displayed

Save and
advance
Enter
selection
of Units

DONE,
USE CONTACT TIP or
[wheel selected],
then Units selected

7.2 RATE Operation

Enter
selection
of Mode
Select
TACH
Mode

12. Exit Setup –
Ready to
measure

RPS, RPM or RPH

If unit Locked
on:

Resets Max/Min

Power Off

OR

Automatic after 90 seconds
if unit not Locked on
14

RATE Setup (continued):
6.

Enter selection
of Units

8.

Select Units

OR

Save and
advance

Repeat until
desired Units
displayed
OR

Rotational Units Linear Units
Only for Linear Units:
8a. Enter
selection of
Wheel
8b. Select
Wheel

Last Wheel
selected is
displayed
OR

Toggles
between 10CM
and 12IN

8c. Save and
Advance
9.

Enter selection
of number of
decimal places

10. Select decimal
places
13

Select Units

8.

Save and
advance

9.

Enter selection
of number of
decimal places

OR

Rotational: C RPS,
C RPM or C RPH
Linear: IPS, IPM, IPH, FT/S, FT/M, FT/H, YPS, YPM,
YPH, MPH, CM/S, CM/M, CM/H, M/SEC, M/MIN, M/H

7.

7.

NONE, 1, 2 or 3

OR

10. Select decimal
places

Repeat until
desired Units
displayed

NONE, 1, 2 or 3

OR

Repeat until
desired decimal
places displayed

11. Save and
advance
12. Exit Setup –
Ready to
measure

DONE, then Units
selected

Unit will remember these settings (including lock on/off) even if turned off
and back on.

Repeat until
desired decimal
places displayed
10

7.0 RATE Mode

6.2 TACHometer Operation

Press and hold

11

NOTE:

OR

Measure

External Remote Contact Assembly (RCA) must be inserted into
input socket.

7.1 RATE Setup

Lock on

Recall Max

Max Speed

Recall Min

Min Speed

1.

Turn
Power
ON
1a. To toggle Lock
On/Off
Press and Hold

If unit Locked
on:

Resets Max/Min

2.

Enter
Setup
Mode

Power OFF

OR

3.

Enter
selection
of Mode

4.

Select
RATE
Mode

5.

Save and
advance

Automatic after 90 seconds
if unit not Locked on

EXTRN, then scrolling
message, then last Units
selected

Locked On

Last Mode selected is
displayed

OR

Toggles between
RATE and TOTAL.
Select RATE.

12



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Create Date                     : 2004:09:14 20:31:13Z
Modify Date                     : 2004:09:17 08:53:12-04:00
Subject                         : PLT200 cover rev 1.2
Page Count                      : 14
Creation Date                   : 2004:09:14 20:31:13Z
Mod Date                        : 2004:09:17 08:53:12-04:00
Producer                        : Acrobat Distiller 5.0.5 (Windows)
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Title                           : PLT200 cover rev 1.2
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