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Water Level Sensor – Optomax Digital Range of Liquid Level Switches

The Optomax Digital water level sensor is ideal for applications with restricted space that require a miniature, low power and low cost sensing solution.

The water level sensor is solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The liquid level sensor can detect the presence or absence of almost any liquid type; oil or water based. The liquid level switch is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

The TTL compatible push-pull output can sink and source up to 100mA at a supply voltage range of 4.5 to 15.4Vdc and can be configured to output a high or low signal when in either a wet or dry state. A fail-safe PWM option is also available with a supply voltage range of 4.5 to 5.5Vdc.

With housing options for internal or external sensor mounting and for use in two operating temperature ranges; Standard (-25 to 80°C) or Extended (-40 to 125°C).

The water level sensor is available in two chemically resistant housing materials, Polysulfone, the standard choice for most applications or Trogamid, which is typically used in food and beverage applications.

Applications in which the water level sensor can be used in can range from anywhere that requires detection of a leak or monitoring the level of liquid.

Examples of applications include;

  • Monitoring of fuel levels iin aircraft, vehicles and static equipment
  • Low level indication of hydraulic fluid in equipment and vehicles
  • Pump protection
  • Fluid level control in medical, industrial and domestic products
  • White goods
  • Monitoring oil sump and bilge pump fluid levels
  • Spa baths and hot tubs
  • Tank and system level control
  • Printing machinery
  • Coffee/tea machines
  • Machine oil/coolant levels
  • Off-highway and agriculture vehicles
  • Milk applications
  • Telecommunications cabinets

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