Pressure Transmitter

Some companies purchased pressure transmitters that allow 100-fold range migration. After migrating the transmitter range downward by 20 times, they found that the transmitter had poor stability. After restoring the standard range, no transmitter stability problem occurred. What is the reason? In this article, we will talk about the factors that cause the stability of […]

When discussing gas or liquid pressure, three common terms are often used: atmospheric pressure, gauge pressure, and absolute pressure. Understanding these concepts is essential in fields like engineering, meteorology, and fluid dynamics. Let’s break down each term and explore how they are related. 1. Atmospheric Pressure  Atmospheric pressure is the pressure exerted by the weight

When selecting a pressure transmitter, it’s common to assume that higher accuracy is always better. However, this isn’t necessarily the case. The ideal level of accuracy depends on the specific application and environment. Here are some important considerations when deciding on the appropriate accuracy for a pressure transmitter. 1. Application Requirements High Accuracy is Essential

Pressure transmitters are simple in structure, durable, highly stable, with high precision and good linear characteristics. They have a wide measuring range and are widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools,

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