Cable Type Magnetostrictive Float Ball Level Transmitter

SCZ21 Magnetostrictive Liquid Level Transmitter

Features 

• Safe and reliable, stable operation
• Large measuring range and high precision
• Liquid level and boundary level measurement
• Anti-static, anti-surge, anti-interference and electromagnetic compatibility design

• The pressure-bearing pipe design of the high-pressure vessel does not require pressure relief for maintenance

• It can be used in dangerous places such as Viscous medium, corrosive, toxic, flammable and explosive

Principle

The structural part of the magnetostrictive liquid level sensor is composed of a stainless steel tube (a measuring rod), a
magnetostrictive wire (waveguide wire), a movable float (with a permanent magnet inside), and the like. When the sensor is operating, the circuit portion will excite a pulsed current on the waveguide wire that will generate a pulsed electromagnetic field around the waveguide wire as it propagates along the waveguide wire. A float is arranged outside the sensor rod, and the float can move up and down along the rod as the liquid level changes. There is a set of permanent magnetic rings inside the float.
When the pulsed current magnetic field meets the magnetic ring magnetic field generated by the float, the magnetic field around the float changes so that the waveguide wire made of magnetostrictive material generates a torsional wave pulse at the position where the float is located. This pulse is along a fixed speed. The waveguide wire is transmitted back and detected by the detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of the float, that is, the position of the liquid surface, can be accurately determined.

Specification 

Range: 0-6000mm (hard rod)/0-25000mm (soft rod) 
Accuracy: ±1mm
Resolution: 0.1mm
Environment temperature: -25℃-70℃
Liquid temperature: -25℃-150℃
Process interface: M27*2
Power supply: DC24V
Output signal: 4-20mA, two-wire system/three-wire
Temperature measurement: -25℃-70℃
Thermal error: ±0.5℃
Explosion-proof: ExiaIIBT4
Communication: RS-485, RS-232, Modbus, Hart and other protocols, can be equipped with CAN bus or customized.

Installation 

The magnetostrictive level transmitter has two installation forms to meet user needs, including: top-mounted and side-mounted.

Mounted Magnetostrictive liquid level meter Magnetostrictive level transmitter

Applications Magnetostrictive liquid level meter Magnetostrictive level transmitter