475040 Datasheet, PDF (3/4 Pages) Extech Instruments Corporation. – Digital Force Gauge

Normal Measurement Mode
1. Slide the POWER switch to the ON position. Reverse the LCD display if desired via
the Reverse key.
2. Zero the meter before each measurement.
3. Touch the adapter to the object being measured in a straight line. Refer to Fig.1.
4. Begin measurement by applying force (Push or Pull). Read the LCD display.
5. After completing the measurement, the display will indicate "0.00" if the position
and angle of the Force Gauge have not changed.
6. If the position or angle of the Force Gauge changes during a measurement, the
display may show one of the following:
a) The display overranges because the initial force of the transducer decreases
due to a change in the position or angle of the Gauge after measurement.
b) The display indicates any value such as "12", "25", etc. This occurs because
the initial force of the transducer increases due to a change in the position or
angle of the Gauge after measurement.
Note: Be sure to press "ZERO" before taking any new measurements.
Peak Load Measurement
1. Slide the POWER switch to the PEAK position...
2. Touch the adapter to the object being measured in a straight line, refer to Fig. 1.
3. Zero the meter before each measurement.
4. Begin measurement by applying force (pull or push). The LCD will display the peak
value, which is the highest reading encountered.
5. After completing the measurement, the display will hold the peak load value if the
position and angle of the Force Gauge have not changed.
6. After completing the measurement, the display will overrange if the position or
angle of the Force Gauge has changed. This occurs because the initial force of the
transducer decreases due to a change in the position or angle of the Gauge after
measurement.
Note: Be sure to press "ZERO" before taking any new measurements.
Fast/Slow selection
Press the FAST/SLOW key to select the desired display update rate. The “((•))” symbol will
appear in the display when FAST is selected.
Mounting
For best results, mount the Digital Force Gauge to a test stand (optionally available, contact
Extech for details). Mounting holes are provided on the rear of the meter.
Maintenance
Battery Replacement
The low battery indication appears as a "LO" on the display when battery voltage is less than
6.8V. To replace the battery:
1. Remove the two screws from the battery compartment cover.
2. Lift off the battery cover.
3. Replace with 6x 1.5V AA (UM-3) batteries. Observe polarity carefully.
4. Replace compartment cover and screws.
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475040 and 475044 Ver. 1.9 12/04