Bühler Technologies GmbH
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Condition Monitor BCM-LS

Condition Monitor BCM-LS

  • 4-20 mA and CAN bus
  • High pressure resistance of up to 50 bar
  • Continuously logs relative humidity, temperature, conductivity, permittivity and liquid level
  • Compact, tough housing also suitable for demanding applications
  • Easy system connection directly inside the tank
  • Evaluates and saves actual data
  • Multifunction sensor


Continuous condition and liquid level monitor for lubricating and hydraulic oils


Continuously monitoring and condition and liquid level of the respective fluid in hydraulic and lubricating systems is essential. Failing to continuously monitor the condition can result in considerable system damage.

The Bühler condition monitoring liquid level sensor (BCM-LS) was designed specifically to continuously monitor the relative humidity, temperature, permittivity, conductivity and liquid level in oil tanks. By continuously monitoring the fluid, sudden and subtle level changes, deterioration or changes in oil quality can be accurately detected and the oil change intervals extended or planned accurately. Maintenance costs can be reduced significantly. This makes the Bühler condition monitoring liquid level sensor an essential part of your condition monitoring system.

The BCM-LS capacitively measures the relative humidity in the medium to ensure reliable information about the saturation level of the oil. The conductivity and permittivity can be used to obtain substantiated information about oil ageing, replenishment and mixing with other oils or foreign objects. Since conductivity as well as permittivity are greatly affected by the temperature, the actual temperature is always determined as well. The additional liquid level measurement function makes the BCM-LS an comprehensive multifunctional sensor.