DIY Guide To Calibrating Your Pressure Transducer

workbenchOld Reliable is reliable. And you trust your sensors to be reliable. Really, what’s the point of a sensor that’s not reliable? If you can’t trust the readings, what’s the point in having the readings? There isn’t one.

And yet, even precision Swiss watches need a tune up. So it’s safe to assume that your pressure sensor may eventually need to be recalibrated (we recommend about once a year). Can you do it? How do you it? Let’s take a look.

3 Factors That Kill Sensor Accuracy, and When You Need to Calibrate

missing the mark on the dart boardWe get asked all the time, “How often should I calibrate my level/pressure sensor?” When it comes to sensors, there is the simple answer, and the long answer that explains the nuts, bolts, washers, and threads of calibration (in other words, we can tell you more than you may want to know).

The simple answer is once per year. This may seem like overkill to some, but we believe in maintaining accuracy.

The long answer follows:

Keep Your Pressure Transducer In Spec With Zero And Span Adjustments

Adjusting the zero and span on your pressure transducer is easy, if you have the right oneSooner or later, no matter what the application or the brand of your instrumentation; your pressure transducer is going to need recalibration. Prolonged exposure in a harsh environment, age, and frequency of use contribute to the drift of your sensor, and results in it falling out of calibration.

Some models of pressure transducers have to be sent in to the factory for recalibration. The housing on these sensors needs to be opened to make the adjustments. However, several models come with...

How To Perform a Quick Calibration on APG Digital Gauges

Calibration is key to precision measurementsKeeping your pressure gauge in calibration is a must for reliable pressure measurement. Fortunately, our gauges let you perform a quick calibration of the zero and span to keep things in check. Here’s how you do it:

Note: This example uses the PG7 Digital Pressure Gauge. The other gauges have slightly different buttons, but the process is similar. Let us know if you have questions.

Double Note: A known accurate zero pressure and full-scale pressure must be applied to the gauge in order to complete the quick calibration process.