Litronic-FMS P30-S planar sensor

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Physical principle	Capacity determination in the high frequency stray field
Frequency	20 MHz
Measurement location	Constrained installation conditions, pipes, screw conveyors, fluidised bed dryer nerve
Measuring range	0 – 100 % moisture content (measuring window adjustable)
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 1.)
Data interface	RS-485 EIA-485
Maximum bus length	1200 m
Measurement value transfer	half-duplex
Bus arbitration	Master/Slave
Data format:	9600bit/s 9 data, 1 stop
Log	proprietary multiprocessor log
Max. number of sensors on the bus	16
Measured value streaming	simplex
Bus arbitration	automatic
Data format:	19200 bit/s, 8 data, 1 Stop, no Parity
Output	binary 2 temperatures and raw value
Output cycle	33 Hz
Max. number of sensors on the bus	4
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	PEEK
Housing/flange material	V4A (1.4404)
Dimensions: Ø/Length	30/94 mm
Weight without cable	0.500 kg

1) representative of the batch or the time window in the Contiprocess, in conjunction with the associated Litronic-FMS II evaluation device, material-dependent, with ideal flow behaviour and with proper calibration

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

• Stainless steel housing

Indirect measuring method: Capacity determination in the high frequency stray field. This method uses the different dielectric constant (permittivity) of water and different materials (solids and liquids).
Fully reproducible sensors: If the plant is subsequently extended with sensors or if sensors are replaced, no recalibration is necessary thanks to the built-in microprocessor.
Waterproof and dustproof: The sensor is also suitable for the harshest environments thanks to its IP68 protection class
High sensitivity: The sensor surface is made of the high-temperature resistant, thermoplastic material PEEK.
Process control and regulation: Thanks to extensive interfaces, the moisture measurement can be integrated into process control systems and controls.
Cost saving: Time-consuming and costly laboratory analyses are no longer necessary or can be reduced.
Temperature measurement/temperature compensation: The sensor can also be used to determine the temperature of the medium.
Limit values: Maximum or minimum limits can be set using the software. Light or sound signals can be triggered if required.
Mean value calculator: The sensor passes on already averaged values to the FMS evaluation and transfer module.
Small but powerful: The P30 has a length of 80 mm. The diameter is 30 mm.
Confined space conditions: The smallest of our sensors fits into even the tightest installation locations.

Increased temperature ranges: For use at increased material temperatures, we offer our P30-ST sensor, which is designed for max. 90 °C material temperature.
Weld-on fittings: For sensor installations in pipes for DN40 lines and pipe from 3 inches and up to a wall thickness of 25 mm, we offer you our appropriate brackets.