Skip to search Skip to main content Skip to navigation

Call us at 1-888-826-6342

We noticed you are from . Visit your local site for regional offers and live support.

316 SS Mini-Type Tuning Fork Level Switch

  • RoHS Icon
  • CE Approved
  • UKCA


Item# TF280-N

In stock

Lead Time (If not in stock): 7 weeks
316 SS Mini-Type Tuning Fork Level Switch TF280-N TF280-N
  • Fork Level Switch with PNP/NPN Output
  • Wide voltage supply range 12-55Vdc
  • No frequent calibration required, easy-to-use, sturdy and durable design. High/low failure safe mode, safe and reliable.
  • Sensitivity adjustment is available for different densities of media.

TF280-N Model Options

View all models

Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Switch Rating and Type
Media Type
Max Operating Pressure
Max Process Temperature
Wetted Materials
Process Connection Type
Process Connection Size
Supply Power
Probe Length

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.


Supply voltage & output: 12~55 Vdc 3 wire PNP/ NPN Output.
Fork length: 40mm
Ambient temperature: -40C~80C
Ambient humidity: 80% RH non-condensed
Storage temperature: -40C~85C
Process temperature: -40C~100C
Process pressure: -1~600PSI (40BAR)
Minimum material density sensed: Liquid: 
Density: >/= 0.7g/cm ³ Viscosity:1~10000 cSt
Magnetic testing: Output function test performed by putting magnets near the indicated spot
Vibrating frequency: 1 KHz +/- 10%
Status indication: Green light: indicate power supply. Red light: indicate operating mode
Housing material: SUS304
Fork material: SUS316
IP protection: IP65
Mounting: 3/4" NPT
Electrical Connection: DIN 43650
loading all models
loading all reviews
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 5ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;
loading all QA
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 25ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

Related Categories

Save Configuration