Elongation Measuring System


Measure displacement of ground surface and output signals to indicator, recorder or alarm.
Installed in locations where landslide or collapse is suspected, this system measures displacement of the ground surface. The potentiometer sensor detects fluctuation of ground surface and an invar line extended from the fixed pile transmits the ground surface displacement, which is converted to a corresponding voltage by rotating the displacement transmission shaft. The electrical output can be connected to various instruments for indication, recording or alarm. A desired rated capacity can be selected from 50 or 100 mm.

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Elongation Measuring System


Rated Capacity 50 or 100 mm (Selected by rudder wheel)
Nonlinearity Within ±1% RO
Hysteresis Within ±1% RO
Rated Output 1.25 mV/V or more
Environmental Characteristics
Safe Temperature -10 to 70ºC
Compensated Temperature 0 to 60ºC
Temperature Effect on Zero Within ±0.1% RO/ºC (*)
Temperature Effect on Output Within ±0.1%/ºC (*)
Electrical Characteristics
Detection Method Potentiometer-type
Safe Excitation 10 V AC or DC
Input Resistance 350 Ω ±2%
Output Resistance 350 Ω ±5%
Cable 4-conductor (0.5 mm2) chloroprene shielded cable, 8 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Safe Overloads 110%
Wrapping Chromate-plated
Degree of Protection IP64 (IEC 60529)
Weight Approx. 2.4 kg (Mainframe)
Dimensions See drawing
Standard Accessories movable pile
Invar wire fixture

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