Mini Vibrating Fork Level Switch
The Mini Vibrating Fork Level Switch is a compact, highly reliable point level sensor designed specifically for accurate level detection of liquid media. It operates on the proven vibrating fork principle, ensuring precise and repeatable switching performance even under demanding industrial conditions.
With no moving parts and integral electronics, this switch delivers maintenance-free operation and long service life. It is immune to changes in electrical properties such as conductivity and dielectric constant, making it ideal for a wide range of liquids including chemicals, water-based fluids, resins, oils, and petrochemicals.
Product Share on :Applications
- High & Low Level Alarm in Tanks and Vessels
- Overfill Protection Systems
- Pump Dry Run Protection & Pump Control
- Flow / No-Flow Detection in Pipelines
- Leak Detection Systems
- Oil, Water, Chemicals & Process Liquids
Working Principle
The Mini Vibrating Fork Level Switch works on the principle of resonance. The fork tines are continuously vibrated at their natural resonant frequency using piezoelectric elements. When the liquid covers the fork, the vibration is damped due to resistance offered by the liquid media.
This change in vibration amplitude is detected electronically and processed to activate a switching output. The output signal can be used to trigger alarms, control pumps, motors, or valves, ensuring reliable level monitoring and process safety.
Construction
The switch features a short fork design of 70 mm made from SS316 for excellent corrosion resistance and durability. The compact enclosure houses integral electronics, LED status indicators, and field-selectable sensitivity for low, medium, and high-density liquids. The rugged construction ensures consistent performance in harsh industrial environments.
Installation
- Side or top mounting on tanks and pipelines
- Standard 1” BSP Male threaded process connection
- Simple onsite calibration
- Minimal insertion required for small tanks
Technical Specifications
| Power Supply | 24 V DC |
|---|---|
| Power Consumption | 0.5 W |
| Output Contact Rating | 200 mA |
| Resonant Frequency | 1.8 kHz (Approx.) |
| Sensitivity | Field selectable (Low / Medium / High density liquids) |
| LED Indication | Normal Running & Alarm Status |
| Operating Temperature | -10°C to 80°C |
| Operating Pressure | Up to 10 Bar |
| Fork Material | SS316 |
| Process Connection | 1” BSP Male, SS304 |
| Probe Length | 70 mm (Standard) / Custom on request |
Key Features
- Highly reliable level detection for liquid media
- No moving parts – zero wear and tear
- Compact design with integral electronics
- Unaffected by conductivity or dielectric variation
- LED indication for status and alarm
- Ideal for critical level control and safety applications
