Level Switch
CVR312 Anti-Corrosion Vibrating Rod Level Switch
The working principle of the rod type level switch is based on continuously vibrating a mechanical rod at its natural frequency. The working principle of the rod type level switch is the same as the vibrating fork level switch. The only difference is that a vibrating rod kept vibrating instead of tuning fork. A vibrating rod is kept in mechanical vibrations at its resonance frequency by piezo-electric crystals. When the service material covers the rod probe, vibrations are damped which is sense electronically and processed signal is used for switching.
Application
- Suitable for corrosive liquid
- Detect high/low level
Feature
- AC&DC dual power supply design.
- High / Low fail safe modes.
- Field- adjustable in sensitivity adjustment to fit versatile density of material.
- No mechanical moving parts, maintenance free.
- Unaffected by flow, foam, solids content, coating and properties variation of targeted media.
- Withstand static electricity.
- Fast delay time 0.6S(adjustable).
Specifications
- Power supply: 20…250VAC/VDC, 50/60HZ
- Sensitivity: High/Low
- Cable entry: 1/2"NPT×2 holes
- Process connection: G1" or 1"NPT
- Process pressure: Vacuum…20bar
- Ambient temperature: -40℃…70℃
- Process temperature: -40℃…130℃
- Output: Relay, SPDT, 2A/250VAC Max. or NPN/PNP or NAMUR
- Delay: 0.6S action; 1S…3S reset
- Vibrational frequency: 355HZ…365HZ
- Tine material: SUS 304/316 covered with PTFE or PFA
- Fail safe modes: High/Low
- Housing/Protection: Aluminium/ IP65
- Max. vertical bearing force of the tuning fork: 20Nm
- Min. induction density of the induction rod: Powder 0.23g/cm3; Liquid 0.8g/cm3