Fibre Orientation Sensor

Key Features

Double-sided, microwave based online sensor
Moisture meter with built in detection of fiber orientation 0-180 degrees
Simultaneous detection of moisture and total fiber orientation (insensitive to sheet thickness)
Fast response time

Measuring Method

The Scienta Microwave sensor model 7250SO is a double-sided, 12-channel sensor for Moisture and Fiber orientation measurement for online use. The sensor has 24 antennas in a microwave cavity forming a circle. The antennas are multiplexed and switch on/off in sequence.

The TE mode polarized microwave radiation is sensitive to the fiber orientation of the measured sheet. Each measurement of the 12 antennas will give a strength and cavity resonance peak value, which are used to calculate the overall fiber orientation value as well as the Moisture value. As the reference frequency another TM mode resonance peak is used to make an accurate Moisture detection.

Benefits

To process applications such as sack paper, cardboard products etc.

No radioactive source is required
Non-contact measurement
Wide measurement range
Service free construction; no moving parts
Easy and convenient to install and operate
Full range of scanners available
Easy calibration and setup
More accurate online measurements

Reduction in rejects due to high performing measurements
Minimization of energy consumption by accurate and reliable moisture measurements and controls
Optimization of paper strength properties
Faster on-spec quality and reduced start up waste

Technical Specifications

Sensor Type	7250S0
Method	Polarized Microwave
Construction	Double-sided sensor
Spectral Range	2100-2400 MHz
Measurement Frequency	100 Hz
Measurement Resolution	1 degree
Measurement Gap	12 mm
Detector	12 channel microwave
Installation	Scanning /Fixed

Sensor Type	7250SO
Microwave power	10mW (-7 dBm)
Frequency mode	Dual
Sensor power requirement	+24V, 2A
Interface options	Profibus/Modbus
-PLC Connections	Ethernet, USB
Environmental Conditions	10-60 ℃ 10-95 % RH
Liquid Cooling	Optional