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Process instrumentation & switches
- Flow Switches
- Tuning Fork Level Switch
- Rotary Paddle Level Switch
- Hydrostatic Level Transmitter
- Hydrostatic Level Indicator Transmitter
- Closed-Tank Level Transmitter
- Differential Pressure Indicator Transmitter
- Mini Differential Pressure Transmitter
- Pressure Indicator Transmitter
- Mini Pressure Transmitter
- Temperature Indicator Transmitter
- Head-Mounted Temperature Transmitter
- Temperature Transmitter with Process Indicator
Tuning Fork Level Switch
Model No: KCPL-VF Series
Tuning Fork Level Switches are designed for reliable point-level detection of powders, granules and bulk solids in tanks, silos, bins and hoppers.
The vibrating fork operates at a fixed frequency. When the fork is covered by material, the vibration changes and the electronics switch the relay output for high-level alarm, low-level detection or process interlocking.
The self-cleaning fork design helps reduce material build-up, while selectable fail-safe and sensitivity settings support reliable operation across different applications. Weatherproof and flameproof enclosure options are available for industrial installations.
Key Specifications
- Maintenance-free electronic vibrating fork design
- Reliable operation in foam and powder applications
- Self-cleaning fork design reduces material build-up
- Selectable Hi / Lo fail-safe and sensitivity settings
- Vertical or horizontal installation
Technical Specifications
- Fork Length
- 100 to 3000 mm
- Mounting Connection
- 1″ BSP / NPT (M); customised available
- Ambient Temperature
- -40°C to 60°C
- Process Temperature
- -40°C to 130°C
- Enclosure
- Weatherproof / Flameproof
- Cable Entry
- M20 × 1.5
- Relay Output
- DPDT, 5 A, 230 VAC / 24 VDC
- Minimum Material Density
- 0.7 g/cm³
- Vibrating Frequency
- 350–370 Hz
- Response Time
- 0.6 s operate / 1–3 s reset
- Power Consumption
- 3 W
Find Applications
- Powder and granular material level detection
- High- and low-level alarm in silos and hoppers
- Dry-run protection and empty detection
- Overflow prevention in storage vessels
- Level detection in bins, tanks and process vessels
- Applications with foam, dust or material build-up
Downloads & images
Technical documents
Types of Tuning Fork Level Switch We Manufacture
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Tuning Fork Level Switch — Standard
KCPL-VF-SE Series
Standard screwed-end vibrating fork switch for general liquid and solid level detection.
- Configuration
- Standard threaded process connection
- Key Feature
- Compact general-purpose installation
- Suitable For
- Tanks, bins, silos and hoppers
Tuning Fork Level Switch — Flanged
KCPL-VF-FE Series
Flanged connection for secure and stable installation on vessels and pipelines.
- Configuration
- Flanged process connection
- Key Feature
- Secure and stable vessel mounting
- Suitable For
- Tanks, silos and process vessels
Tuning Fork Level Switch — Extended Length
KCPL-VF-EL Series
Extended fork length for precise level detection in deeper tanks or vessels.
- Configuration
- Extended insertion length
- Key Feature
- Reaches deeper sensing points
- Suitable For
- Deep tanks, silos and tall vessels
Tuning Fork Level Switch — Tri-Clover
Sanitary mini pressure transmitter with a Tri-Clover connection for hygienic applications.
- Configuration
- Sanitary Tri-Clover connection
- Key Feature
- Easy removal and hygienic installation
- Suitable For
- Pharma, food and beverage applications
Tuning Fork Level Switch — Cooling Fin
Cooling-fin extension to reduce heat transfer from hot process media toward the electronic housing.
- Configuration
- Extended neck with cooling fins
- Key Feature
- Reduces heat transfer to electronics
- Suitable For
- High-temperature process applications
Tuning Fork Level Switch — PTFE-Coated
PTFE-coated fork and wetted configuration for compatible corrosive or chemically aggressive media.
- Configuration
- PTFE-coated fork and wetted parts
- Key Feature
- Improved chemical and corrosion resistance
- Suitable For
- Corrosive or aggressive media
Product variant