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  • WIKA Model BLM Magnetostrictive sensor For bypass level indicators

WIKA Model BLM Magnetostrictive sensor For bypass level indicators

2015-06-17 23:49:08

Description:

Model BLM Magnetostrictive sensor For bypass level indicators……

New Products

Siemens 6DL1193-6TP00-0DH1 SIMATIC ET 200SP HA

Siemens 6DL1193-6TP00-0DH1 SIMATIC ET 200SP HA, Terminal block, Type H1, 32 push-in terminals, internal reference temperature New load group, width: 22.5 mm.

Siemens 6DL1193-6TP00-0BH1 SIMATIC ET 200SP HA

Siemens 6DL1193-6TP00-0BH1 SIMATIC ET 200SP HA, Terminal block, Type H1, 32 push-in terminals, internal reference temperature Width: 22.5 mm.

Siemens 6DL1193-6GC00-0NN0 SIMATIC ET 200SP HA

Siemens 6DL1193-6GC00-0NN0 SIMATIC ET 200SP HA, carrier module 8-fold carrier for holding 8 I/O modules of the ET 200SP HA.

Siemens 6DL1193-6GA00-0NN0 SIMATIC ET 200SP HA

Siemens 6DL1193-6GA00-0NN0 SIMATIC ET 200SP HA, carrier module 2-fold carrier for holding 2 I/O modules of the ET 200SP HA.

Assortments

Description

 

Applications

  • Sensor for continuous level measurement of liquids in bypass level indicators

  • Chemical, petrochemical, offshore industries

  • Shipbuilding, machine building

  • Power generating equipment, power plants

  • Pharmaceutical, food, water treatment, environmental engineering industries


Special features

  • Continuous level measurement on the outside of the bypass

  • 2-wire technology 4 ... 20 mA

  • Measured value output via digital interface and a selectable measured value as analogue signal

  • Case from stainless steel (display from glass)

  • Magnetostrictive level measuring instrument with high resolution


Description

Level sensors with a magnetostrictive, high-resolution measuring principle are used for continuous level measurement of liquids and are based on determining the position of a magnetic float following the magnetostrictive measuring principle. The sensors are mounted on the outside of a bypass level indicator.


The measuring process is triggered by a current impulse. This current produces a circular magnetic field along a wire made of magnetostrictive material, which is held under tension inside the sensor tube. At the point being measured (liquid level) there is a cylindrical float with permanent magnets acting as a position transducer, whose field lines run at right angles to the impulse magnetic field. This magnetic field of the float tensions the wire.

The superposition of these two magnetic fields triggers a mechanical wave in the wire. This is converted into an electrical signal at the end of the wire in the sensor housing by a piezoceramic pick-up.

By measuring the elapsed transit time, it is possible to determine the start point of the torsional stress wave and therefore the float position with a high degree of accuracy.