Tuning fork switch introduction

- Nov 18, 2017 -

Profile Editor

Tuning fork switch can measure a variety of levels, with high / low fail-safe limit switch, overflow or air-run protection, pump control, display pipeline with / without flow and other functions. [1] 

Working principle editor

The operating principle of the tuning fork switch is to vibrate the tuning fork at a certain resonant frequency by means of a pair of piezoelectric crystals mounted on the tuning fork base. When the tuning fork material level switch and the tuning fork in contact with the measured medium, the tuning fork frequency and amplitude will change, tuning fork level switch these changes by the intelligent circuit to detect, process and convert it into a switching signal.

Application and features editing

Suitable for measuring free-flowing, medium-density solid powders or granules. Also suitable for almost any liquid medium, this series of tuning fork material level switch can test a variety of levels, with high / low failsafe limit switch, overflow or air run protection, pump control, display pipeline with / without flow, etc. Features.

Tuning fork switch can measure a variety of levels, with high / low fail-safe limit switch, overflow or air-run protection, pump control, display pipeline with / without flow and other functions.

Tuning fork switch is mainly used in challenging liquids, including the junction, impurities, sewage and hydrochloric acid, sodium hydroxide and other industrial liquid.

Tuning fork switch has a variety of output forms, 2-wire AC, 2-wire DC, 3-wire PNP / NPN transistor. The operation of the tuning fork material level switch has nothing to do with the liquid conductivity, dielectric constant, viscosity, pressure and temperature.


Tuning fork switch is not subject to foam, eddy current, gas, for a variety of silo solid material level and a variety of containers within the fixed-point alarm or control level. A variety of models can be suitable for different occasions.

Tuning fork switch using new technology and imported chips, with long service life, stable performance, safe and reliable, and adaptability (measured medium different electrical parameters, the density of the measurement does not have an impact), do not transfer The school (no matter what kind of medium measurement does not need on-site calibration) and maintenance-free features, widely used in metallurgy, building materials, chemicals, light industry, grain and other industries in the process control.

Tuning fork switches are commonly used with level gauges to control and measure material. Mainly for a wide range of density of the powder, small particles, such as dust collector into the outlet pipe plugging detection, dust collector set hopper level measurement, plastic, rubber powder, flour, all kinds of food crops, food, chemical Product limit measurement and so on. For a variety of traits of liquids: such as paste, viscous, easy foaming, corrosive and other media limit test.

1. Adaptability - the measured electrical parameters of different materials, the density of the measurement does not have an impact. Fouling, agitation, turbulence, bubbles, vibration, moderate viscosity, high temperature, high pressure and other harsh conditions have no effect on the test.

2. Maintenance-free - As the tuning fork limit switch detection process by the electronic circuit to complete, no moving parts, so put into operation once the installation does not require maintenance.

3. No adjustment - the tuning fork limit switch is not affected by the measured medium electrical parameters and density, so no matter what kind of measurement of liquid on-site calibration


Technical Specifications Editor

Supply voltage: 220VAV / 24VDC

Operating temperature:

Fork body -30 ~ 150 ℃

Meter -20 ~ 70 ℃

Working pressure: less than 2Mpa

Medium density: minimum 0.6g / cm3

Output: a group of relay output (AC 220V / 3A, DC 30V / 3A)

Output delay: 1 ~ 20 seconds adjustable

Sensitivity: 1 to 10 adjustable

Power consumption: 1W

Installation Interface: Cone G1 "

Electrical Interface: M20 × 1.5

Related Industry Knowledge

Related Products

  • Barometric and Atmospheric Pressure Sensor and Transmitter
  • 4-20ma And Hart Output Temperature Transmitter Of Supplier
  • High Temperature Type Level Meter Supplier
  • Side Mounted Type Liquid Slurry Density Meter
  • High Grade Mechanical Type Fuel Oil and Heavy Oil Oval Gear Flow Meter
  • Customized 30CrMoV/42 CrMo Strong Investment Casting Steel Shook Parts