Pressure Sensor Installation Notes

ATO’s pressure sensor feature digitally compensated electronics that are environmentally protected within a sealed enclosure. The sensors are highly accurate over a broad temperature range, resisting the effects of wide ambient temperature swings, high humidity, condensation and icing. The pressure port is machined from a solid piece of stainless steel. No o-rings, organic materials, or welds are exposed to the pressure media, allowing for a leak-proof, all-metal, sealed pressure system. The transducers operate with all pressure media compatible with stainless steel, including most hydraulic fluids, fuels and refrigerants.


While a pressure sensor is generally, robust there are certain precautions that can improve reliability and prevent damage.
Where possible:

  1. Install the pressure sensor so that water does not run down the electrical cable and pool on the connector/ backend.
  2. Install the sensor in a low vibration environment.
  3. Keep power and switching cable wiring separate from signal cables to minimize interference.
  4. Install in a location that has some mechanical protection. Do not use the device as a hand-hold or step. Hydraulic and other liquid lines sometimes have unanticipated pressure spikes or surges caused by valve operation or impact. This momentary pressure can damage a fast responding pressure sensor.
  5. Use a pressure sensor incorporating a “snubber”.
  6. Do not install the sensor directly at the end of a long pipe run.
  7. Do not insert a foreign object, such as a pen or screwdriver, into the pressure port in an effort to simulate pressure. A small force applied to this small area can easily overpressure the device, causing permanent damage.
  8. Ensure the sensor is installed using the correct o-rings or washers.
    The device should be installed using a wrench or socket on the hex flats provided. Do not use a strap wrench on the body.

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