Choosing the Correct Pressure Transducer


1. Do your measurements need to be in volts or in milliamps? What type of output does your application require?

2. What pressure range is needed?

3. Define the type of pressure you want to measure: gauge, absolute or differential?

4. What is your sampling environment? Is the transducer rated only for low risk environments such as clean, dry air? Or is it suitable to use in a difficult or corrosive environment?

5. How much money do you have to spend?

6. Are there any extremes such as temperature, corrosive media to take into account? Is the transducer intended for indoor or outdoor use? Will there be shock, vibration, electrical interference or hazardous conditions present?

7. What are the dimensions of the transducer? This information will dictate your available space requirements and the types of environmental protection needed.

8. What about the cables, connectors, threads etc.? If the transducer needs to be removed from the system for re-calibration or system maintenance, can the connector be unplugged and the sensor un-threaded? Are the connectors an integral part of the transducer?

9. What is the minimum accuracy you need? Accuracy is the difference between the true value and the indicated value expressed as a percent. For instance, static accuracy, expressed as +/- percentage of full scale output, combines the effects of linearity, hysteresis and repeatability.

10. Will your design require multiple sensors?

Hopefully, the answers to these key questions will get you started on the right path. Should you have any questions along the way, please reach out to us with your application needs and we will point you in the right direction!

Ellison Sensors, Inc.
(561) 989-8540