Analog Water Level Meter

Analog Water Level Meter measures water level and water temperature at a same time by one (1) probe. The probe is slim size with 18 mm in diameter only. User can use this for small size of monitoring well/hole.

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.


  • Minimum 20 mm in diameter PVC pipe can be used as a monitoring well.
  • It is not required correction of atmospheric pressure because of the cable with a built-in bent tube.
  • Stainless (SUS316) is used for the sensor parts and housing, then this instrument is resistant to corrosion.
  • There is high versatility for water level monitoring.


Measurement Range Water Level : 10, 20, 35 m
Temperature : 0 to 50 degree C
Output Current Water Level : 4 to 20 mA
Temperature : 0 to 5 mA
(Negative value can be output, but its measurement precision is beyond the specification.)
Measurement precision Water level : ±0.2 % FS (±0.032 mA)
Temperature : ±1.0 degree C
Operation Voltage 8.0 - 24.0 V
Max. Cable Length 150 m
Load Resistance Water Level : 200Ω or lower
Temperature : 1 kΩ or lower
Operation Temperature range 0 to +50 degree C (without freeze)
Prove External Dimension φ18 × L250 mm (without rubber tube section)