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Level Sensors
Blue Mark Back-Pressure Level Meter LE100
Back-Pressure Level Meter LE100 Measures the purge pressure (back-pressure) in a tube which changes relative to the liquid level of a tank by converting it to level.
Monitor output and level alarm output of up to 8 points are available.
Sensor, Indicator, and orifice are built into a 48mm square case.
High repeatability of ±0.3% (full scale)
Spec. Sheet Download Manual Download


Blue Mark Back-Pressure Level Meter LE110
(Differential pressure sensing type)
Back-Pressure Level Meter LE110 LE100 with differential pressure (Air opening and atmospheric pressure variation) sensor function.
It can also be used in semi-enclosed tanks whose internal pressure varies.
Sensor, Indicator, and orifice are built into a 48mm square case.
High repeatability of ±0.3% (full scale)


Blue Mark Back-Pressure Level Switch LT1
Back-Pressure Level Switch LT1 Perfect for upper limit / lower limit level sensing of liquids.
It is a simple and compact level switch with built-in semiconductor back-pressure sensor and orifice.
Semiconductor back-pressure sensor used at the sensing section.
No mechanical moving parts to wear out means higher reliability.
Simply set the length of the tube to an arbitrary length and preparations are complete.
The end of the tube becomes the sensing point.
An orifice is built into the unit for supplying 20±1kPa gas.
Once the gas is supplied, it will automatically become the purge flow.
When the liquid level reaches the end of the tube an alarm will be displayed.

Back Indicators