Pressure Transmitter

1.Preparation before adjustment ① Check the appearance of the instrument to be calibrated. The nameplate should be complete and clear, and indicate the model, specification, position number, etc. The high and low pressure chambers should be marked, the surface coating should be intact and free of rust, the internal parts should be intact, and there […]

Answer: Since the common faults in differential pressure transmitters are zero-point drift and blockage of the pressure guide tube, calibration of the scale point by point is rarely performed in the field. Instead, the zero-point and trend of changes are checked, as follows: Zero-point check: Close the positive and negative pressure shut-off valves. Open the

The differential pressure flow meter, also known as the throttling flow meter, is the most mature and commonly used flow measurement instrument in industrial production. It is based on the principle of fluid throttling, utilizing the pressure difference generated when the fluid passes through the throttling device to achieve flow measurement. It is widely used

The differential pressure transmitter with HART protocol has unique advantages. Users can use HART communication to manage and adjust the differential pressure transmitter or monitor process variables. They can also use buttons for on-site configuration, which is easy to operate. Today we will talk about how to calibrate the HART differential pressure transmitter. Regardless of

There are many types of transmitters. According to the different physical quantities measured, they can be divided into pressure transmitters, liquid level transmitters, temperature transmitters, etc. According to the different output signal methods, they can be divided into analog transmitters and digital transmitters. According to the structure, transmitters can be divided into ordinary type and

During the field use of differential pressure transmitters, how do we judge whether their working status is normal? Since most of the faults of differential pressure transmitters are zero drift and blockage of pressure pipes, the scale is rarely calibrated point by point on site, but the zero point and change trend of the differential

Pressure, temperature, velocity, angle, and other similar parameters are common non-electrical physical quantities that need to be measured in industrial settings. These physical quantities must be converted into analog electrical signals to be transmitted to the control room or display devices. The equipment that converts these physical quantities into electrical signals is collectively referred to

Positive migration moves in the positive direction, negative migration moves in the negative direction, and the distance moved is the migration amount. Therefore, the essence of positive and negative migration is to change the upper and lower limits of the range by adjusting the transmitter, while the size of the range remains unchanged. It can

The intelligent pressure transmitter (see picture) consists of three parts: measurement circuit, process connection and transmitter. The sensor part includes: capacitive sensor, measurement diaphragm detection circuit, temperature sensor and temperature compensation circuit; intelligent electronic board. The board part includes: microcomputer controller and peripheral circuit, which completes the conversion of pressure signal to 4~20mAde. Used to

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