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Analog Extensometer

Analog Extensometer is a sensor of electric current output type to measure displacement on the ground surface. The displacement is measured by change of the wire length between two (2) points that one is at a fixed site and another is at a moving area. Measurement mechanism is simple and the monitoring data is reliable.
This instrument monitors the displacement volume and speed at a target site. Hence, it is suitable to use this for observing conditions of the landslide activity and to make an early warning system for saving human life / properties.
Monitoring data is read out by electric current with 4 – 20 mA, then this instrument can be connected to a data logger marketed*. To get more reliable data, user can connect this to GSM i-SENSOR Analog 4.1ch of a remote monitoring system.
* No warranty is given as to the availability to connect the instrument to all data logger.


NOTE : This product is manufactured in one of OYO Group companies, TSS (Tianjin Smart Sensor Technology Co., Ltd.), in China.


■ Installation work is quite simple and easy. Support bar such as steel pipe is only prepared to install this instrument.
■ The monitoring data can be used for a slope failure prediction that is experimental equation (Saito equation, Fukuzono equation, etc.).
■ Polycarbonate body having splash-proof is applied and it is available to directly install in the field.
■ This instrument can be easily/reasonably expanded to the remote monitoring system using GSM i-SENSOR.


Measurement data Length of wire
Measurement range 800 mm
Measurement accuracy ±0.2 % FS
Output 0 to 16 mA
Operation temperature range -10 to +50 degree C
Size H129 × W185 × D70 mm
Weight 1.9 kg including 5 m cable



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