In the field of industrial automation, pressure transmitters and differential pressure transmitters are indispensable measuring instruments. Today, we will analyze the similarities and differences between pressure transmitters and differential pressure transmitters. Similarities between pressure transmitters and differential pressure transmitters: The principle of operation is the same: both pressure transmitters and differential pressure transmitters generate a voltage signal through the piezoresistive effect, which is amplified, zeroed, and sensitivity-temperature compensated for their final measurement. The output signal is the same: whether it is a pressure transmitter or a differential pressure transmitter, it can output 4~20mA current, RS485 digital signal and 0~10VDC, 0~5VDC and other voltage signal output. Differences between pressure transmitters and differential pressure transmitters: Different definitions: pressure transmitter is used to convert pressure signals into standard electrical signal outputs, and is connected to the controller or DCS system of the transmitter through cables, and is widely used in chemical, petroleum, pharmaceutical, food and other industries; The differential pressure transmitter combines the flow measurement principle with the pressure measurement principle to measure the flow rate of fluid in the pipeline, which is mainly used in water supply, gas supply, heating and other fields. Different application fields: pressure transmitters can be used in a variety of different pressure values and use environments, such as water, steam, oil, gas, nitrogen and some other gases or liquids, widely used in manufacturing, petroleum, chemical, machinery, electric power, mining, metallurgy and other departments of flow measurement field, such as flow meters, level gauges and pressure sensors and other equipment; Differential pressure transmitters can be used to measure the flow of gases and liquids, and are widely used in petrochemical, electric power, steel, aerospace, environmental protection and other industries, and can be used in various applications such as fuel flow, liquid mass flow, compressed air flow, heating and cooling water flow, etc. Different pressure ends: pressure transmitters can only measure pressure at one pressure end; The differential pressure transmitter can measure the pressure of two pressure points, the pressure of the two is subtracted, and the pressure at the positive end is subtracted from the pressure at the negative end to obtain the pressure difference. The connection methods are different: the pressure transmitter is generally threaded; In addition to the threaded connection, the differential pressure transmitter can also be connected by the pagoda mouth and the quick interface, which can be directly connected to the hose of the corresponding diameter, which is more convenient to install. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!