Get answers to frequently asked questions about pressure transducers, including accuracy, calibration, and installation. Count on APGSENSORS for reliable and precise pressure measurement solutions.
Yes. Our popular PT-400 model is commonly used in outdoor locations such as lift stations, oil rigs, and tank farms, and has built-in reverse polarity and surge protection compliant with IEC 61000-4-5. Our standard duty models are meant for indoor environments and do not have lightning protection.
Yes. The PT-400 is designed for outdoor use in harsh and hazardous conditions. It's hazardous location certifications include CSA Class 1, Div. 1, ATEX, and IECEx approvals for worldwide use. It's also built to withstand intense vibration common on oil rigs. The PT-405 is built for the same tough environments, carrying CSA Class 1, Div. 1 Explosion Proof approvals.

We have two varieties of simple pressure transducers. Our PT-L9/13/14 series have a non-amplified mV/V output, is super compact, inexpensive, and great for anywhere you won't have a lot of electrical noise. Our PT-L1/L3/L10 series has an amplified output (VDC & 4-20mA), is compact, still inexpensive, and works better where electrical noise is more of a concern.

These models aren't beefed up for extremes like our larger PT-400, but they're just as reliable in controlled environments and often trusted in critical applications.

Even more basic is our PT-200. It comes with a 4-20 mA output, 0.5% accuracy, and ranges up to 10 kpsi.

Different sensing elements have different pros and cons. The pros of a MEMs transducer is that it's more stable and costs less. However, strain gages and foil gages have their own set of pros that make them preferable in the right circumstances. Rest assured, we use whichever type of transducer that is most suitable for your application.
We recommend having your pressure sensor calibrated at least once per year, or annually. However, most ISO 9001 compliant maintenance schedules are adequate. If you ever start to question your sensor's accuracy, have it calibrated. We can calibrate any of our own sensors. Contact us for a quote.
In general, the overpressure rating is 1.5X full scale range. But this changes based on the configuration and pressure range of your sensor. The higher the pressure range, the less overpressure you can get away with. Burst pressure is another important spec. This depends on the yield strength of the material used to make your pressure diaphragm. Consult with us on your specific model for more detail.

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