Electro-optical level switch SST Optomax

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Miniature Liquid Level Switches - SST Optomax Digital Range Miniature, Low Power, Cost-Effective Liquid Level Sensing Features • Reverse polarity, ESD and transient over-voltage protected • Wide supply voltage range • Push-pull output, capable of sinking or sourcing up to 100mA, can directly drive small loads • Optional fail-safe PWM output • Standard and extended temperature ranges available • Polysulfone or Trogamid housing material options • Internal or external mounting options • High pressure option available The Optomax Digital Level Switch is Ideal For Applications With Restricted Space That Require A Miniature, Low Power And Low Cost Sensing Solution. The microcontroller based 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 from the Optomax Digital level switch escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It 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.