PPD-2 is designed to test the performance of electronic modules, thermal correction circuits, and measuring blocks of pressure transmitters, as well as to check the technical condition of the pressure transmitters themselves.

The principle of operation of the PDP-2 is that the simulator of the measuring unit, designed to test the functionality of electronic modules, transmitter controls, is powered from the circuit of the pressure transmitter being tested and provides a change in the output signal in the range: -100 … +300 mV. The temperature sensor simulator is powered from the circuit of the transmitter being tested and is designed to test the performance of the thermal correction circuits providing a change in the output signal in the range: +100 mV … + 1300 mV, which corresponds to a change in ambient temperature from -40 ° C to + 80 ° C.

They are widely used in the metrologist’s workplaces for detecting errors in pressure transmitters and for diagnostics