The most common and useful industrial pressure measuring instrument is the differential pressure transmitter. This equipment will sense the difference in pressure between two ports and produce an output signal with reference to a calibrated pressure range.

What are differential pressure transmitters used for?

Differential pressure transmitters are designed to measure pressure before and after the fluid encounters an interruption, such as a filter or pump. However, this pressure instrument can also be used to measure liquid levels. The market offers several methods for measuring and monitoring liquid levels.

How the differential pressure transmitter detects pressure differences?

One of the most common, and most useful, pressure measuring instruments in industry is the differential pressure transmitter. This device senses the difference in pressure between two ports and outputs a signal representing that pressure in relation to a calibrated range.

How do you use a differential pressure sensor?

How does a differential pressure sensor sense pressure? Typically, the two pressures to be measured are applied to opposite sides of a single diaphragm. The deflection of the diaphragm, either positive or negative with respect to the resting state, determines the difference in pressure.

How do you test a differential pressure sensor?

If everything passes physical inspection, you can test the DPF differential pressure sensor using a multimeter set to 20V and a pressure gauge. With the battery on and engine off, connect the multimeter ground to the negative battery terminal and run a quick plausibility by checking the voltage of the battery.

How can you tell if the DPF sensor is bad?

Here are some signs that indicate the DPF is not regenerating properly due to the DPF sensor failing:Poor engine performance.Poor fuel economy.High engine temperatures.High transmission temperatures.An increase in black smoke (soot) from the exhaust.Check engine light.