Tuning Forks for Liquids
Tuning Fork
The operating principle is the same for all vibrating probe level switches. A piezo-electric crystal is used to force a blade to oscillate at its fundament al frequency (natural resonance). When the blades come into contact with the process medium, the natural frequency of oscillation is damped; the electronics sense the change in frequency, which causes the unit to switch.
The different electronic outputs to choose from allow the user to switch a load on/off or to interface directly with a computer. The units can be programmed to sense high or low level and fail safe high or low, with adjustable sensitivity to eliminate false switching.
This rugged design of switch is used throughout the process industries. It is available with a wide range of flange or screwed process connections and can have extensions, enabling the probe to reach 3 metres into a tank if required.
The wetted parts of standard switches are 316 stainless steel, but special Halar coated and Hastelloy switches are available for extremely corrosive applications. Hygienic probes are available for the food industry. The switch has visual indication of its on/off status and a test point on the side of the housing to allow an operator to check the function of the switch.
Intrinsically safe and flame proof versions are available for hazardous areas.
Product Highlights
The different electronic outputs to choose from allow the user to switch a load on/off or to interface directly with a computer. The units can be programmed to sense high or low level and fail safe high or low, with adjustable sensitivity to eliminate false switching.
This rugged design of switch is used throughout the process industries. It is available with a wide range of flange or screwed process connections and can have extensions, enabling the probe to reach 3 metres into a tank if required.
The wetted parts of standard switches are 316 stainless steel, but special Halar coated and Hastelloy switches are available for extremely corrosive applications. Hygienic probes are available for the food industry. The switch has visual indication of its on/off status and a test point on the side of the housing to allow an operator to check the function of the switch.
Intrinsically safe and flame proof versions are available for hazardous areas.
Product Highlights
- No moving parts to wear
- No maintenance required
- ATEX & SIL options
- Hygienic options
- Simple to install
- Small insertion length
- Unaffected by environmental changes
- Specific frequency avoids false switching
- Max. Product Length:up to 3m
- Liquid Viscosity:.2 to 10,000cps
- Maximum Temperature:-40ºC to +150ºC
- ATEX option:Yes