Extech Instruments 475055 Manuale utente
User Manual
Models 475055
Digital Force Gauge
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Introduction
Model 475055 Digital Force Gauge that measures
Tension or Compression (pull/push) to 220 lbs. It features: Peak hold, fast/slow response time,
positive or reverse display direction, and a separate sensor. An RS-232 PC interface provides data
acquisition functionality. This meter is shipped fully tested and calibrated and with proper use will
provide years of reliable service.
Meter Description
1. Sensor socket
2. LCD display
3. Keypad
4. Kg/N/lb switch
5. Off/On/Peak switch
6. Sensor plug
7. Sensor loop
8. S-type load sensor
9. Sensor hook
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Operation
Preparation for Measurement
1. The 475055 automatically determines Tension or Compression (pull/push) force during use.
Compression displays as a negative value and Tension displays as a positive value.
2. Select units of measure (kilograms, pounds, or Newtons) via the units select switch.
3. Screw in the sensor hook and loop on the load sensor and then connect the sensor to the
meter via the input jack on top of the meter.
4. Select FAST (0.2 seconds) or SLOW (0.6 seconds) update rate.
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 1.
Figure 1 Correct and Incorrect Angles of Measurement
Measurement Mode
1. Slide the POWER switch to the ON (I)position. Reverse the LCD display if desired via the
Display 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.
Note: Be sure to press "ZERO" before taking a new measurement.
Remove the sensor hook/loop or compression measurement.
Over Range Indication
The Model 475055 uses a strain gauge sensor to measure force. Avoid subjecting the instrument to
forces outside the specified measurement range. The sensitive strain gauge can be damaged or
otherwise compromised by misuse. When an over-range condition is sensed by the meter the LCD
displays all dashes.
Note that the dashes are shown at the top of the LCD (--------) for tension measurements and at the
bottom of the display (--------) for compression measurements.
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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 reading until a higher
reading is reached or the switch is moved out of the peak hold position.
Note: Be sure to press "ZERO" before taking a new measurement.
Fast/Slow selection
Press the FAST/SLOW key to select the desi icon will appear in
the display when FAST is selected.
Display Backlight
Pressing the backlight button momentarily will turn on the backlight. After approximately 15
seconds, it will automatically shut off.
PC Interface
PC interface port
Contact Extech for a copy of the 407001-Pro Software for streaming of data from the meter to the PC
via the RS232 port.
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 six (6) batteries.
4. Replace compartment cover and screws.
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Specifications
Range 220 lbs, 100kg, 980 Newtons
Accuracy (23oC) ±(0.5%rdg + 0.1lbs, 0.1kg or 0.4N)
Resolution 0.05lbs, 0.05kg, 0.2 Newtons
Overload Capacity 150kg
Circuit Custom LSI microprocessor
Zero adjust Button for Peak Hold and normal display zero
Display 5-digit 16 mm)
Update Rate Fast mode 0.2 seconds; Slow mode 0.6 seconds
Over range Indicators LCD displays -------- --------
compression measurements
Zero / Tare Control Up to Maximum capacity
Full Scale Deflection <1mm
Transducer type S-type load cell with 2 hooks (thread size: M10 x 1.5
mm ISO) and
6.5 ft (2m) cable
Peak Hold Freezes Max reading on display
Data Output RS-232 serial interface with 16-bit data stream output
Operating Temperature 0°C to 50°C (32 °F to 122 °F)
Operating RH Max. 80% Relative Humidity (RH)
Power Supply 6 or 9VDC adapter (not included)
Power consumption 12mA (approx.)
Weight Meter: 450g (1 lb); 278g (0.61 lbs) w/out batteries
Sensor: 635g (1.40 lbs)
Dimensions Meter: 215 x 90 x 45 mm ( )
Sensor with 2 hooks: 162 x 51 x 22 mm (6.4 x 2.0 x 0.9 )
Cable length: 2m (6.5 ft.)
Copyright ©2014-2019 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
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