How to Select & Install Tuning Fork Level Switch

1. How should the fork orientation be selected?

Answer:

The orientation should allow the process liquid to enter and leave the fork area freely and minimize material accumulation.

2. Can the fork touch the tank wall?

Answer:

It should not. Adequate clearance should be maintained to prevent mechanical interference and ensure reliable vibration.

3. Can it be installed in a narrow nozzle?

Answer:

Yes, provided the fork dimensions and nozzle geometry allow adequate clearance.

4. Can it be installed in a pressurized tank?

Answer:

Yes, if the selected process connection and sensor are rated for the actual process pressure and temperature.

5. What installation mistakes should be avoided?

Answer:

Common mistakes include insufficient fork clearance, installing directly in areas with excessive turbulence, ignoring material buildup and selecting a process connection that does not match the process conditions.

Selection

6. How do I select a tuning fork level switch?

Answer:

Consider the medium, density, viscosity, temperature, pressure, process connection, wetted materials, electrical output, installation position and hazardous-area requirements.

7. What process information is required?

Answer:

At minimum, provide the medium, operating temperature, operating pressure, density, viscosity, tank or pipe size, installation position and required electrical output.

8. Why is liquid density important?

Answer:

Density affects the vibration characteristics of the fork. Very low-density liquids may require a sensor specifically designed for low-density applications.

9. Why is viscosity important?

Answer:

High-viscosity liquids can adhere to the fork and increase buildup. The application should therefore be evaluated for coating and cleaning requirements.

10. How does temperature affect selection?

Answer:

The sensor and electronics must be suitable for the actual process and ambient temperature. High-temperature applications may require special designs or remote electronics.