Extech Instruments 475040-SD User manual
USER GUIDE
Digital Force Gauge
Model 475040
Model 475040-NIST
Model 475040-SD
Model 475040-SD-NIST
Model 475044
Model 475044-NIST
Model 475044-SD
Model 475044-SD-NIST
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475040 and 475044-EU-EN V2.0 8/12
2
Introduction
Thank you for selecting the Extech Digital Force Gauge. This professional meter, with proper care, will
provide years of safe reliable service. This device measures Tension or Compression (Push or Pull) to
5kg (475040) or 20kg (475044). The reversible display indicates readings in grams, ounces, or
Newtons. This meter offers Peak Hold and a Zero function. Extech Instruments is an ISO-9001 certified
company.
Meter Description
1. Universal sensing head
2. LCD Display
3. Fast response indicator
4. FAST / SLOW response selection
5. LCD reverse display button
6. Zero/Tare button
7. Units select switch
8. Mounting Holes (on rear)
9. Battery compartment cover (on rear)
10. Flat Head adapter
11. Cone adapter
12. Chisel adapter
13. Hook adapter
14. 5” (120mm) extension rod
15. OFF/ON/PEAK HOLD button
1
3
2
4
5
6
7
15
13
8
9
14
10
12 11
475040
FORCE GAUGE
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3
Operation
Preparation for Measurement
1. The 475044 or 474040 automatically determine TENSION or COMPRESSION (Push or
Pull) force during use. Compression displays as a negative value and Tension displays as a
positive value.
2. Select units of measure (grams/kilograms, ounces/pounds, or Newtons) via the units select
button.
3. Attach the desired adapter (tension – hook; compression.- flat, cone or chisel head) to the
Universal Sensing Head.
4. Select FAST or SLOW response. The FAST setting permits the capture of fast
measurement changes and the SLOW setting provides an averaged reading display.
5. Zero the display before each measurement via the Zero button.
Note: The sensing head with adapter must be in line with the object being measured. Avoid
rotating the sensing head. Refer to the figure below.
Figure 1 ─ Correct and Incorrect Angles of Measurement
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 over-ranges 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.
A
cceptable Not Acceptable
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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 over-range 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. 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.
All EU users are legally bound by the Battery Ordinance to return all used batteries to
community collection points or wherever batteries / accumulators are sold!
Disposal in household trash or refuse is prohibited!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
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5
Specifications
475044 475040
Range 44 lbs, 20kg,196 Newtons 176oz, 5000g, 49 Newtons
Accuracy (23oC) ±(0.5%rdg + 2 digits) ± (0.4%rdg + 1 digit)
Resolution 0.01lbs, 0.01kg, 0.05 Newtons 0.05oz, 1g, 0.01 Newtons
Overload Capacity 30kg 10kg
Circuit Custom LSI microprocessor circuit
Zero adjust Button for Peak Hold and normal display zero
Display 5 digits, 10 mm (0.4”) LCD display
Update Rate Fast mode 0.2 secs; Slow mode 0.6 secs.
Over-range Indicator Displays “--------“
Zero Control Maximum capacity
Full Scale Deflection 2.00mm
Transducer type Load cell
Peak Hold Freezes Max reading on display
Operating Temperature 0 °C to 50 °C (32 °F to 122 °F).
Operating RH Max. 80% RH.
Power Supply 6x 1.5V AA (UM-3) size battery or DC 9V adapter (not included)
Weight 551g / 1.2 lbs
Size 227 x 83 x 39 mm (8.9 x 3.3 x 1.5”)
Mounting Holes Located on rear of gauge
Accessories Tension adapter (hook), compression adapters (flat, cone, and chisel),
5" extension rod, 6 x 1.5V AA batteries, case
Copyright © 2012 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form
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