Pressure Transmitter

1. General requirements ① The appearance of the instrument is in good condition, without paint peeling or loose parts. There are no defects that affect the use and measurement performance, and the dust cover is complete (except for the pressure gauge that does not allow the measured medium to escape from the gauge). ② Instrument […]

With the advancement of instrument technology, differential pressure transmitters of various brands are developing in the direction of high precision and intelligence. However, the advancement of technology has brought a misunderstanding to designers: when people choose a differential pressure transmitter, they often focus on the accuracy of the differential pressure transmitter and ignore the factors

In compressed air systems, pressure sensors and temperature sensors play a vital role. They can monitor the operating status of the system in real time and provide important data for system control and maintenance. However, in daily use, these sensors may experience various failures, affecting the normal operation of the system. Therefore, an in-depth understanding

We can see its detailed information on the transmitter’s nameplate: such as its operating voltage, accuracy level, and its range, etc. The pressure transmitter can convert the pressure value of the measured medium into a current value of 4~20 mA for output. 4 mA represents the 0 bit and 20 mA represents the full scale.

Open tank (unpressurized) measurement Regarding differential pressure level measurement, there are two main types of storage tanks: open (unpressurized) and closed (pressurized). Open, non-pressurized storage tanks are connected to the atmosphere; there is a clear path from the tank to the surrounding environment, and the air pressure acting on the liquid is equal to atmospheric

1. Sewage discharge is mainly aimed at differential pressure transmitters, pressure transmitters, float level gauges and other instruments. Since the measurement medium contains dust, oil, tiny particles, etc., which are deposited in the reverse pressure pipe (or deposited in the pressure sensing pipe), it is directly or indirect effects on measurement. The sewage discharge cycle

NO. Fault Reason Treatment 1 Output indicator transmitter reading zero Whether the power supply electrode is reversed or not Correct wiring Whether the power supply voltage is 10~45VDC Recovery power supply 24VDC Is the diode in the terminal block damaged Replacement of diodes Electronic circuit board damage Replacement of electronic circuit boards 2 Transmitter not

NO. Fault Reason Treatment 1 No outputs Is the switch of the pressure guide tube not turned on Open pressure guide tube Whether the guide pressure pipeline is blocked Unclogging of pressure-guide tubes Is the power supply voltage too low Adjust the supply voltage to 24V Is there any disconnection in the output circuit of

1. Do not use a voltage higher than 36V on the transmitter, it will easily lead to damage.2. The transmitter should not touch the diaphragm with hard objects, it will damage the diaphragm piece.3. The measured medium can not be frozen, otherwise, the sensor element isolation diaphragm is easily damaged, resulting in damage to the

When the pressure gauge data is abnormal, it should be tested and diagnosed according to the physical state of the measured medium – solid, liquid, gas – in a targeted manner (1) When abnormal fluctuations occur in the pressure control instrument, the changes in the process operation should be confirmed first, because such changes are