WIKA FFG 高分辨率磁致伸縮液位水平傳感器
可防爆 法蘭連接
Level Sensors Magnetostrictive, high-resolution measuring principle
Model FFG
Applications
■ High-accuracy level measurement for almost all liquid media
■ Chemical industry, petrochemical industry, natural gas, offshore, shipbuilding, machine building, power generating equipment, power stations
■ Process water and drinking water treatment, food and beverage industry, pharmaceutical industry
Special Features
■ Process and system-specific solutions possible
■ Operating limits:
- Operating temperature: T = -200 ... +200 °C
- Working pressure: P = Vacuum to 100 bar
- Limit S. G.: ρ ≥ 400 kg/m3
■ Wide variety of different electrical connections, process connections and materials
■ Explosion-protected versions
Debion
The WIKA Model FFG sensor acts as a measured value transmitter for high-accuracy, continuous level measurement of liquids and is based on identifying the b of a magnetic float following the magnetostrictive measuring principle.
Further special features
■ Large scope of application due to the simple, proven functional principle
■ Process connection, guide tube material and float made of stainless steel 1.4571 or plastic
■ For harsh operating conditions, long service life
■ Continuous measurement of the liquid levels irrespective of physical or chemical changes of state of the measured media, such as: foaming, conductivity,
dielectric constant, pressure, vacuum, temperature, vapour, condensation, blistering, effects of boiling, density changes
■ Signal transmission over large distances
■ Simple installation and commissioning, onetime calibration only, no recalibration necessary.
■ Volume-proportional or depth-proportional display of the filling level
■ Interface layer measurement and overall level from Δ-density 50 kg/m3
Options
■ Customer-specific solutions
■ Process connection, guide tube material and float made of stainless steel 1.4435, 1.4539, titanium, Hasbloy (others on request)
■ In combination with limit switch, stepless setting of the limit values over the entire measuring range
Illustration of the principle
Design and operating principle
■ The measuring process is initiated by a current impulse.This current generates an axial magnetic field (3) along the length of a wire (1) made of magnetostrictive material,which is held under tension inside the guide tube.
■ At the point being measured (liquid level) is a float with permanent magnets (4) acting as a b transducer.
■ The interb of both magnetic fields generates a mechanical torsion wave (5) in the wire.
■ This is converted into an electrical signal by a piezoceramic transber in the sensor housing (2) at the end of the wire.
■ The measured propagation delay enables the origination point, and thus the float b, to be determined with high accuracy.
歡迎致電咨詢訂購WIKA FFG 高分辨率磁致伸縮液位水平傳感器 可防爆 法蘭連接
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