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GM77

Product catalog summary

Overview: The GM77 is a cost-effective, hand-held measuring amplifier designed for strain gauge signals. It features a 4½-digit LCD display that is freely scalable and can operate on mains, battery, or accumulator power. The device includes a 15-minute automatic shut-off for battery conservation, a maximum value memory, and a signal conversion switch.

Key Features:

Freely scalable display and decimal point.
Operates on mains, battery, or accumulator with integrated charging.
Automatic shut-off after 15 minutes to save battery.
Calibration control switch for easy calibration.
Maximum value memory and signal conversion switch.
4½-digit LCD display for clear readings.

Description: The GM77 is a versatile measuring instrument suitable for various applications. It supports commercial batteries, accumulators, or a plug power pack with an integrated charging function. The device can be easily calibrated to a sensor using a 100% calibration control key, and the calibration can be checked at any time.

Specifications:

Measuring accuracy: 0.2% ±3 digits.
Maximum value memory rise time: 250 ms -3 dB.
Reading rate: 2.5 readings per second.
Display range: 0 to ±19999.
Bridge resistance: 350 to 2000 Ω.
Input sensitivity: 0.35 to 3.5 mV/V.
Supply voltage for SG: 4V, max 15 mA.
Operation time: >40 hours with accus, >50 hours with batteries.
Temperature ranges: Nominal 15 to 35°C, Service 5 to 45°C, Storage -10 to 70°C.
Dimensions: 125 x 80 x 40 mm.
Weight: 250 g.
Protection level: IP40.

Options/Accessories:

GM77/AK: Accu set with 4 x AAA, 1.2V, 800 mAh.
GM77/NT: Desktop power supply for mains operation and accu charging.
mV/V: Adjusted sensitivity option.
KSSH15: D-SUB-connector, high density, 15-pin.

Catalog excerpts

Q Display and Decimal Point Freely Scalable Q Mains-, Battery-, Accu Operation Q Cut-Off after 15 min Q Calibration Control Switch Q Maximum Value Memory Q Signal Conversion Switch Q Integrated Accu Charger Q 4%-digit LCD-Display Q Easiest Calibration Description The GM77 is a cost-effective hand-held measuring instrument with a 4%-digit, freely scalable LCD display for strain gauge (SG) signals of 0.35 .. 3.5 mV/V. The compact hand-held measuring instrument is flexibly applicable. Selectively, it can be used with commercial, external accessible batteries, accus or a plug power pack with integrated accu charging function. The battery saving mode with a 15 min timer switches the instrument off automatically. By a key, an integrated maximum value memory and a signal inverse function are connectable and disconnectable at any time; the status is indicated on the keys by LED's. Another key applies 100% calibration control (if available - see sensor data sheet) of the sensor, thus the GM77 can easily be calibrated to a sensor and the calibration can be checked at any time. Options/ Accessories Art.-No. Email: [email protected] Technical changes under reserve 080625d.doc Homepage: www.lorenz-sensors.com

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