Litronic FMS P78 moisture measuring planar sensor

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Product Code: FMS P78
Brand: LIEBHERR
Reviews: 0
0.00€
Ex Tax: 0.00€
Specifications: (See all)
Physical principle
Capacity determination in the high frequency stray field
Frequency
20 MHz
Measurement location
Outside silo via baffle plate, on belt with sliding shoe carriage, pipes, screw conveyors, tank, etc.
Measuring range
0-100% moisture content
Capacity resolution
3 fF
Description

Small, fine, excellent: The Liebherr P78 sensor in conjunction with the Liebherr FMS moisture measuring installation has become indispensable for many industrial processes. The moisture measuring installation was invented in 1985 at the Bad Schussenried factory. Measurement by the Liebherr sensor system is based on the physical principle of capacitance determination in the high-frequency stray field. In addition to their high precision and robustness, the measuring devices from Bad Schussenried are characterised by their reproducibility.

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

Characteristics

• Pure capacitive measuring method

• Sensor exchange without recalibration

• Sensitivity adjustable in 3 steps

• Integrated microprocessor with mean value calculator

• Material flow detection

• Temperature compensation

• Limit value evaluation

• Direct digital measurement value determination

• Highly wear-resistant ceramic shield

• Stainless steel housing

Specifications
Sensor/electronic parameters
Physical principle
Capacity determination in the high frequency stray field
Frequency
20 MHz
Measurement location
Outside silo via baffle plate, on belt with sliding shoe carriage, pipes, screw conveyors, tank, etc.
Measuring range
0-100% moisture content
Capacity resolution
3 fF
Update cycle
32.64 ms
Sampling rate mean value counter
16 – 25 106
Maximum attainable measuring accuracy
+/- 0.05 % moisture content
Measurement value transfer
RS-485, multiprocessor log
Max. number of sensors on the bus
16
Maximum bus length
1200 m
Power supply
8 - 30V, 0.4 VA
Temperature measurement measuring range
-10 – 90 °C
Measuring accuracy temperature measurement
+/- 0.5 °C
Operating ambient temperature
5 – 72 °C
Working temperature - electronics
-20 – 80 °C
Storage temperature
-25 – 80 °C
Protection class
IP68
Connection cable type
UNITRONIC®ROBUST C 7x0.14 shielded
Connection cable length
6 m
Wearing protection
Zirconium oxide (ZrO2Al2O3)
Housing/flange material
V4A (1.4404)
Weight without cable
0.500 kg
Dimensions Ø/Height
78/57 mm alternatively: 30/94 mm
Weight clamping flange
0.300 kg
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Litronic FMS P78 moisture measuring planar sensor
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