To provide a differential pressure transmitter, capable of acquiring values of differential pressure, H-side static pressure, and L-side static pressure in which simultaneity is maintained.

The pressure transmitter is provided with both a first sensor for detecting pressure of both a high-pressure-side connecting pipe and a low-pressure-side connecting pipe, and a second sensor for detecting pressure of both the high-pressure-side connecting pipe and the low-pressure-side connecting pipe and generates a differential pressure signal and a static pressure signal, on the basis of output of the first sensor and output of the second sensor. The differential pressure transmitter is provided with a synchronous arithmetic means for simultaneously computing differential pressure and static pressure, on the basis of measured values acquired by the simultaneous measurements of the first and second sensors at the same timing.