Litronic FMS | Reliable Moisture Measuring System

Litronic FMS Planarsensor P78

Small, fine, excellent: the P78 moisture and water content sensor in conjunction with the Litronic FMS measuring device has become indispensable for many industrial processes. Measurements of this Liebherr sensor technology are based on the physical principle of capacitance determination in the high-frequency stray field. In addition to high precision and robustness, the measuring devices are characterised by their reproducibility.

Once a sensor has been calibrated, further measuring points can be set up or devices renewed on this basis at any time without great effort. The system thus always remains reliable, regardless of its previous runtime and age.

Features

■  Purely capacitive measuring method

■  Sensor exchange without recalibration

■  Sensitivity adjustable in 3 steps

■  Integrated microprocessor with average value calculator

■  Material flow detection

■  Temperature compensation

■  Limit value investigation

■  Direct digital measured value determination

■  Highly wear-resistant ceramic shield

■  Stainless steel housing

Advantages

■ Indirect measuring method: Capacitance determination in the high-frequency stray field. This method uses the different dielectric constant (permittivity) of water and a wide variety of materials (solids and liquids).
■ Fully reproducible sensors: If sensors are subsequently added to the system or if sensors are replaced, no recalibration is necessary thanks to the built-in microprocessor.
■ Waterproof and dustproof: The sensor is suitable even in the harshest environments thanks to protection class IP68.
■ Very hard wear protection: The sensor surface consists of a 2 mm thin zirconium oxide ceramic.
■ Process control and regulation: Thanks to extensive interfaces, the moisture measurement can be integrated into process control systems and controllers.
■ Cost savings: Time-consuming and costly laboratory analyses can be eliminated or reduced.
■ Limit values: Maximum or minimum limit values can be set using the software. If required, light or sound signals can be triggered.
■ Average value calculator: The sensor passes on already averaged values to the FMS evaluation and transfer module.

Sensors in production

• Each individual sensor undergoes a calibration process lasting several hours

Assembly variant

• Sensor installation under silo outlet. Sand falls over the baffle plate and through the measuring range of the sensor

Application example

• Mounted in sliding shoe carriages, the sensor measures quartz sand directly in the running process

Your contact to Litronic FMS

• Technical sales representative: Mr Öski Seleker advises you from the first enquiry to the realisation of your metrological task