Application: 3151SD differential pressure transmitter can be used to measure the flow, level, differential pressure, pressure gauge pressure, density and other parameters. The measuring range is from 0.15 kPa to 6890 kPa, and the application range is from furnace pressure, small flow rate to high tower liquid level and pressure drop of compressor unit. Product profile: 3151SD is a capacitive intelligent differential pressure / pressure transmitter produced by Shaanxi Xiyi Measurement and Control Technology Co., LTD. This transmitter is based on the traditional capacitive sensor to measure the differential pressure / pressure, and uses the direct digital capacitance circuit to replace the analog signal amplification circuit and A / D conversion circuit. The digital compensation technology is used to compensate the temperature and static pressure, which improves the measurement accuracy and reduces the temperature drift. It has the characteristics of good long-term stability, high reliability and strong self-diagnosis ability. Performance performance requirements when working in the static pressure range of 3.45 kPa to 13.79kPa. The accuracy is 0.075%, the range ratio is 100:1, the differential pressure calibration range from 0.125 kPa to 6890 kPa, the gauge pressure calibration range from 0.125 kPa to 41370 kPa, the absolute pressure calibration range from 0.374 kPa to 6890 kPa.