Extech Instruments 475040-SD Manuale utente

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

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

12 11

475040

FORCE GAUGE

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475040 and 475044-EU-EN V2.0 8/12

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.

cceptable Not Acceptable

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475040 and 475044-EU-EN V2.0 8/12

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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475040 and 475044-EU-EN V2.0 8/12

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

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