Dawson DAM110B
Digital Non-Contact Tachometer
User’s Manual
1
Table of Contents
LIMITED WARRANTY AND LIMITATION OF
LIABILITY ..................................................... 3
Out of the Box ............................................. 4
Accesories ................................................... 4
Certification: .............................................. 4
INTRODUCTION ........................................... 5
Overview ..................................................... 5
Safety Information ...................................... 5
USING THE METER ....................................... 7
Figures and Components ............................ 7
Buttons and Components ...................... 7
Button Description ................................ 9
Display Description .............................. 10
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MEASUREMENTS ......................................... 11
Rotations per Minute (RPM) ................... 12
Maximum/Minimum ................................ 12
Saving Data .............................................. 13
Read/ Recall Data ..................................... 13
SPECIFICATIONS ........................................ 14
General Specification ................................ 14
Operating Environment ............................ 14
Technical Parameters ............................... 15
MAINTENANCE AND REPAIR ..................... 15
Repair ....................................................... 15
Replacing Batteries ................................... 16
CONTACT DAWSON ................................... 16
FEATURES ...................................... Back Page
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LIMITED WARRANTY AND
LIMITATION OF LIABILITY
This instrument from Dawson Tools Inc. will be free from defects
in workmanship and material for three years from the date of
original purchase. This warranty does not cover defects resulting
from damage caused by the user such as drops, neglect, misuse,
unauthorized alteration, usage outside of specified conditions,
contamination, or improper repair/maintenance. To receive
service on the instrument if it becomes necessary during the
warranty period, contact your nearest Dawson authorized service
center at (800) 898-6991 or visit www.DawsonTools.com to
obtain a return authorization (within the US only). A return
authorization is necessary before returning any instrument to
Dawson; no service will be provided without a return
authorization. The user is responsible for properly packing the
unit and charges such as shipping, freight and insurance charges.
The extent of Dawson's liability is limited solely to the
repair/replacement of the instrument. The above warranty in its
entirety is inclusive and no other warranties, written or oral, are
expressed or implied.
4
Out of the Box
Check the Meter and accessories thoroughly before using
the Meter. Contact your local distributor if the Meter or
any components are damaged or malfunction.
Accessories:
Reflective sheet
1pc
User’s Manual
1pc
1.5V AAA Battery
4pcs
Soft Case
1pc
Certification:
The Meter is compiled to EMC
requirements.
5
Introduction
Overview
The DAM110B is a non-contact digital photo tachometer
with stable performance, high reliability and a high safety
standard. This Meter uses a compact, high-speed
integrated chip capable of measuring rotation speeds
from 50RPM to 19999RPMs. The backlit LCD allows
measurements and reading in low light.
Safety Information
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK,
PRODUCT DAMAGE OR PERSONAL INJURY, PLEASE
FOLLOW THE SAFETY INSTRUCTIONS DESCRIBED IN THE
USER MANUAL. READ THE USER MANUALS BEFORE
USING THE METER.
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Avoid shaking, dropping or any kind of
impacts when using or transporting the Meter.
To avoid electric shock or personal injury,
repairs or servicing not covered in this manual
should be performed only by qualified
personnel.
Avoid direct exposure to sunlight to ensure
extended life of the Meter.
Do not place Meter in a strong magnetic field;
this may cause false readings.
Use only the batteries indicated in the
Technical Spec.
Avoid exposing batteries to humidity. Replace
batteries as soon as the low battery indicator
appears.
WARNING
TO ENSURE SAFE OPERATION AND LIFE OF THE METER,
DO NOT PLACE THE METER IN ANY ENVIRONMENT OF
HIGH PRESSURE, HIGH TEMPERATURE, DUST, EXPLOSIVE
GAS OR VAPOR.
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Please keep the original packing for future
shipping purposes (ex. Calibration)
After opening the box, check for any damage
during delivery.
Using the Meter
Figures and Components
Buttons and Components
1. Laser emission and receiving window
2. LCD display
3. Instrument case
4. Power button
5. Maximum and Minimum button
6. Hold button
7. Measurement button
8. Data storage button
9. Data storage Read button
10. Backlight button
11. Storage read number plus button
12. Storage read number minus button
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Front Panel
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Button Description
Power On/Off Press the “ ” button to turn on
or off the meter
MIN/MAX Switch measurement mode
between maximum (MAX) and
minimum (MIN)
MODE Switch measurement mode
between m/min, m/sec, ft/min,
ft/sec, in/min and RPM
MEASURE Press and hold the button to read
the current measurement
MEM Save current speed.
READ Read the data saved by “MEM”
Press the button to hold data
Turn on/off the backlight
10
Plus button: increase the number
when reading or to saving data
Minus button: decrease the
number when reading or saving
data
Display Description
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1.Signal symbol
2. Low battery symbol
3. Maximum measurement display
4. Rotation speed reading display
5. Minimum measurement display
6. Storage state display
7. Storage number display
8. Average measurement value display
9. Measurement unit display
Measurement
WARNING:
KEEP A SAFE DISTANCE FROM HIGH-SPEED ROTATING
OBJECTS TO AVOID ANY MECHANICAL DAMAGE OR
PERSONAL INJURY. DO NOT POINT THE METER AT A
LIVING BODY TO AVOID INJURY.
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Rotation per Minute (RPM)
1. Attach the reflective sheet to the target.
NOTE:
Target cannot be made of a strong light reflective
material as it will affect the measurement accuracy. If so,
cover the target first and then attach the reflective sheet.
If the target is under strong sunlight or strong reflection
is inevitable, please use Dawson DAM110A contact type
tachometer.
2. Set the Meter in a fixed location, making sure
the meter is perpendicular to the rotating
surface and can spot the reflective sheet.
3. Hold the “MEASURE” button and read testing
result on LCD screen. Signal symbol will blink
during measurement.
Maximum/Minimum
To show the maximum measurement, press
“MAX/MIN” button till “MAX” is displayed.
To show the minimum of the measurement,
press “MAX/MIN” button till “MIN” is
displayed.
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To show current readings, press “MAX/MIN”
button till the LCD does not display “MAX” or
“MIN”.
NOTE:
“MAX/MIN” cannot be used in real time; no current
data will be shown or updated when “MAX/MIN” is used.
Saving Data
1. Press “MEM” button and “MEM” will appear
on the upper right corner of LCD screen;
default storage number is “00”. Press “ “ or
“ “ to select storage number.
2. Press “ ” to save the reading in the specified
storage number; value will flash once. The
current value is stored in the selected storage
number.
3. Press “READ” to exit data saving.
Read/ Recall Data
1. Press “READ” to recall the saved data.
2. Press “ “ or “ “ to select and read value
stored in that storage number.
3. Press “MEM” to exit.
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Specifications
General Specification
Rotation speeds from 50 to 19999RPM ;
display will read 0.00 if below 50 RPM
Measuring distance: 2 in. to 10 in.
Auto power off: 30 sec
Low battery symbol “ ” is displayed if
batteries are lower than 4.5V
Power supply: 4 × 1.5V AAA battery
Dimension (LxWxH): 7.5” x 2.4” x 1.1” (155 x
60 x 27 mm)
Weight: 0.3lb (120gm)
Operating Environment
Elevation < 6560 ft (2000 m)
Relative humidity (RH) ≤ 80%RH
Operating temperature: 32– 104°F (0 - 40°C)
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Technical Parameters
Measuring Scope
Accuracy*
Resolutions
50~ 99.99 RPM
±(0.03%±2d)
0.01RPM
100~ 9999.9RPM
0.1RPM
10000~ 99999 RPM
1RPM
*All accuracies indicated in this document are stated in laboratory
conditions and can be guaranteed for measurements carried out in the same
conditions, or with required conditions.
Maintenance and Repair
Repair
Please follow these steps closely if the Meter is not
functioning properly:
Check batteries; replace with new batteries if
low battery indicator “ ” appears.
Follow User’s Manual to confirm all
procedures.
Before sending Meter back for repair, include
a description of the problems encountered.
Remove batteries and pack Meter well to
avoid damage in delivery, Dawson does not
cover damage due to delivery.
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Repair or service not covered in this manual
should be performed only by the authorized
service center or qualified personnel.
Replacing Batteries
Follow these steps to replace batteries:
Turn off the Meter.
Loosen the battery compartment door and remove
the door from the case bottom.
Remove batteries and replace with new batteries.
Re-attach the battery compartment door to the
case bottom and tighten screw.
Contact Dawson
Dawson Tools, Inc.
1142 S. Diamond Bar Blvd., #858
Diamond Bar, CA 91765
Phone: (310) 728-6220
www.DawsonTools.com
Do not recycle
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(Back page)
Features
LCD Display
Auto Ranging
Auto Power Off
MAX/MIN/AVG Display
Back Light
Data Hold
Low Battery Indicator
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