Extech Instruments 475040 User manual

USER GUIDE

Digital Force Gauge

Models 475040 and 475044

475040-475044-EU-EN v2.6 4/14

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. Please visit the Extech Instruments

website (www.extech.com) to check for the latest version of this User Guide.

Meter Description

FRONT DESCRIPTION

1. Universal sensing head

2. LCD Display

3. Fast response indicator

4. Unit select switch

5. OFF/ON/PEAK HOLD button

6. Battery compartment cover (on rear)

475040-475044-EU-EN v2.6 4/14

100mm (3.93”)

METER BACK AND MOUNTING SCREW DESCRIPTION

1. Mounting screws:

Hex head (#4 Allen wrench) with a thread size of metric (ISO)

M5 x 0.8. The spacing between screws is 100.0 mm (3.93”)

2. Battery compartment access screws

3. Battery compartment

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

cceptable Not Acceptable

475040-475044-EU-EN v2.6 4/14

Normal Measurement Mode

1. Slide the POWER switch to the ON position.

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.

Mounting

For best results, mount the Digital Force Gauge to a test stand. Mounting holes are provided on the

rear of the meter.

475040-475044-EU-EN v2.6 4/14

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

475040-475044-EU-EN v2.6 4/14

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, 16 mm (0.63”) 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:5000g Approx. 2mm max.

Full Scale Deflection:20kg Approx. 0.4mm max.

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 480g / 1.1 lbs.

Size 215 x 90 x 45 mm (8.5 x 3.5 x 1.8”)

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

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