Ultrasonic Liquid Level Switches

Ultrasonic Liquid Level Switches

KUSG Ultrasonic Liquid Level Switches

Ultrasonic Liquid Level Switches

Ultrasonic liquid level switches are used in a wide variety of applications to detect the location of level in a process or storage vessel. These switches can be used in virtually any liquid. A complete offering of materials and mounting configurations are available to meet your application needs.

Principle of Operation

Ultrasonic switches use piezoelectric crystals to transform electrical energy into mechanical motion (sound). The Transmit Crystal sends a pulse of sound through the space between the crystals, to the Receive Crystal. If the space is filled with air, gas or vacuum, the Receive Crystal does not detect the sound pulse. However, if the space is filled with liquid, any liquid, the pulse is detected by the receive crystal, and the switch output changes.

 

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The Model KUST and KUSG are designed for industrial applications. The Model KUSG contains a remote-test feature that allows you to test the operation of the switch and sensor on-demand. The Model KUSO is a low-cost alternative for OEMs (Original Equipment Manufacturers).

Product Features

  • Not reliant on chemical properties of the liquid
  • No moving parts
  • Simple installation with no calibration necessary
  • Available in a wide variety of process connection materials
  • Remote self-test to verify operation of the electronics and sensor (Models KUST & KUSG)
  • Vibration Resistant

Industries Served

  • Chemical
  • Petroleum
  • Water & Wastewater
  • Pharmaceutical
  • Pulp & Paper
  • Power
  • Aerospace

Common Applications

  • Oils and other hydrocarbons
  • Solvents
  • Water
  • Acids
  • Caustics
  • Condensate
  • Clean Liquids

Gallery

KUSG Ultrasonic Liquid Level Switches KUSO Ultrasonic Liquid Level Switches

Specifications

Model KUST

Input Power Options

  • AC = 90-240VAC
  • DC = 24Vdc
  • DC (Two-Wire) = 9-30VDC

Output Options

  • Relay = 10A DPDT
  • Loop Power = 4-20mA

Temperature Range

  • Electronics = -20°F to 170°F
  • Sensor = -4°F to 302°F

Pressure Range

  • 316 SS = Vacuum to 1000psig
  • Tefzel® = Vacuum to 100psig

Sensitivity (Signal-to-Noise Ratio):

  • 500:1

Repeatability

  • ±2mm

Response Time

  • 0.5 Seconds Fixed (Delay Available)

Model KUSG

Input Power Options

  • AC = 90-240VAC
  • DC = 24Vdc
  • DC (Two-Wire) = 9-30VDC

Output

  • Relay = 10A DPDT
  • Loop Power = 4-20mA

Temperature Range

  • Electronics = -20°F to 170°F
  • Sensor (Metal)= -4°F to 302°F

Pressure Range

  • Metal Sensors = Vacuum to 1000psig
  • Non-Metal Sensor = Vacuum to 100psig

Sensitivity (Signal-to-Noise Ratio)

  • 1000:1

Repeatability

  • ±2mm

Response Time

  • 0.5 Seconds Fixed (Delay Available)

Model KUSO

Input Power

  • DC = 12Vdc
  • DC = 24Vdc
  • DC (Two-Wire) = 9-30VDC

Output

  • Relay = 1A SPST (Normally Open)
  • Loop Power = 4-20mA

Temperature Range

  • -4°F to 212°F

Pressure Range

  • Vacuum to 500 psig

Cable Length

  • 12″; For Longer Lengths Consult Factory

Mounting

  • 3/4″ NPT; For Flanges Consult Factory

Sensitivity (Signal-to-Noise Ratio)

  • 500:1

Repeatability

  • ±2mm

Response Time

  • 0.5 Seconds Fixed (Delay Available)