Vibrating Fork Level Switch

The working principle of vibrating fork level switch is based on vibrating tuning fork’s natural frequency and amplitude measurement. A specially shaped tuning fork is continuously vibrating at its natural frequency using piezo-electric elements and changes in amplitude in the presence of application media are measured. The pressure applied on diaphragm drives the vibrating fork’s tines apart from each other and return to their original position when the pressure is removed. As the material level increases and comes in contact with the vibrating fork tines, the amplitude of oscillation of vibrating fork level switch dampens or decreases as it covered with the solid application media. The change in amplitude is detected by the microprocessor leading to a switching decision. When the amplitude goes below a set threshold, vibrating fork type level switch trigger changes in output

Product Features :- 

Compact vibrating fork level switch for free-flowing solids, granules and powders

• Universal Power Supply: 18 – 55V DC & 90 – 265V AC
• Application Temperature Range : up to 200° C
• Outputs: DPDT Relay, Open Collector PNP Output
• Process Connection: Threads and Flanges
• Polished & hygienic fork
• Shorter Probe Length
• Fast Switching: 0.5s & 0.8s options available
• Certifications: Flame Proof Housing IIC, IP-68 Housing

Technical Data :- 

●Power supply: 24VDC (standard); 220VAC (optional)

●Ambient temperature: -20℃～70℃

●Medium temperature: -40℃～150, high temperature optional

●Media density: minimum 0.6g/cm3

●Process connection: thread, chuck or flange

●Output mode: SPDT 220VAC/24VDC 4A relay (10A optional) or RS485 bus communication mode

●Working pressure: ≤2MPa or ≤6.4Mpa

●High and low alarm: can be set to high or low alarm

●Delay: 1～30s (For longer time, please specify when ordering)

●Shell protection: IP65 or above

●Power consumption: 3W

●Electrical interface: M20*1.5 other optional

●Instrument internal circuit anti-surge voltage: 1500VAC