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Longtec TR700 - 1 General Instruction; Instruction

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TR700 Instruction Manual
1
1. General Instruction
1.1. Instruction
TR700 strain load cell, digital transmitter (transmitter for short) is a kind of multi-purpose signal
converter, integrating display, transmitting and control, with the function of serial digital signal
output and analog output etc. It is small and light, adopting guide way installation. Besides, it is
strictly tested by EMC, of high reliability, and adopts key operation and LED display at the same
time. It is applicable to all kinds of load cells of resistance strain gauge used in testing of pull,
pressure, tension, weighing material level, hopper scale, crane scale, hook scale, and tension &
pressure testing machine etc. Moreover, the analog load cell can be updated digitally, so that it could
be widely used for weighing and tension measurement in provision, light industry, metallurgy,
building material, chemical industry, colored metal, energy, and mechanism etc.
Terms Related
Definition
Scale Division
The change of the show value in unit;
Only one of the numerical values (1, 2, 5, 10, 20, or 50) is optional.
Excitation Voltage
The voltage to drive the resistance strain gauge sensor, provided by
the display
Resistance Strain
Gauge Sensor
It is a kind a assembly, converting force or weight data to voltage
signal
One resistance Gauge sensor contains two parts: one is a kind of metal
assembly called elastomer, deformed linearly via the force acting on
it; the other is a kind of strain chip, the resistance of which will
change via the magnitude of the elastomers deformation.
Output Ratio of
Resistance Strain
Gauge Sensor
The ratio of output signal voltage and excitation voltage of resistance
strain Gauge sensor, which is also called output sensitivity
Maximum Capacity
The maximum that the weighing display could display;
It is preset before.
Resolution
The minimum signal the meter can differentiate
Tare Load
The weight of the carrying device which can make the resistance
strain Gauge sensor output voltage
Weighing Division
The change of calibrating weight in unit, displayed on the weighing
display

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