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TUNING FORK LEVEL SWITCHES - USER GUIDE
1. PRODUCT INTRODUCTION
1. Working Principle
The piezoelectric component is used to drive the tuning fork and feedback
signal, which produces the resonation on the fork. When the fork comes
into contact with a material, the fork will release some frequency signal as
feedback. It will be converted into the output of the contact signal when
the circuit detects the frequency decrease of the signal.
The product relies on the damping effect by covering the testing material
on the tuning fork which reduces the vibration frequency of the tuning fork
and outputs a switch signal. Therefore, there is no signal amplification
circuit inside, which can eliminate the trouble of frequent sensitivity
adjustment due to the material change.
2. Features
•Contact output option:
oSPDT Relay contact: 3 A / 250 Vac / 250 Vdc
oSSR MOSFET (PNP/NPN): 400 mA / 60 Vac / 60 Vdc
•Wide voltage supply range: 20-250 Vac 50/60Hz, 20-250 Vdc
•Power consumption: 5 VA (AC) or 2.5 W (DC) Max, 120 Vac/30 mA or
24 Vdc/75 mA Normal Operation
•No frequent calibration required, easy-to-use, sturdy and durable
design. High/low alarm mode, safe and reliable.
•Sensitivity adjustment is available for different densities of media. Fine
powder can be detected.
•Suitable for liquid, powder, and solid applications.
•Adjustment setting for different densities of media.
3. Application Scope
It is applicable to the max. and min. level detection of the tanks or tubes
filled with various solid/liquid media. The product has a variety of
applications, such as in the chemical fiber industry, rubber industry, tire
industry, cement industry, steel industry, food industry, pharmaceutical
industry, and animal feed factories in terms of the level detection for the
bins of the raw material/process/finished products.
4. Applicable Materials
The tuning fork level switch can be widely applied to detect the minimum
and maximum levels in tanks, silos, and hoppers filled with materials of
different densities and states.
Common applications
•Water & solutions
•Powders
•General purpose solvent
•Oil
•Heavy oil
•Petroleum
