How to choose Yokogawa EJA530E pressure transmitter capsule

Principle of Yokogawa Transmitter

The Yokogawa EJA530E high-performance pressure transmitter uses monocrystalline silicon resonant sensor technology and is suitable for measuring the pressure of liquids, gases or steam. EJA530E converts pressure into 4-20mA DC current signal output, with fast response, remote setting, self-diagnosis and other functions.

Since Yokogawa transmitters have the advantage of ensuring high precision and keeping negative pressure, temperature and other environmental influences small. The sale price of electricity that can be applied continuously for a long time. Small and medium-sized and lightweight, it is not limited by the installation site, and is very popular in the market. Using microcomputer technology, it has detailed self-diagnosis and communication functions.

Principle of EJA Differential Pressure Transmitter: Electron optical production and processing technology is used to make two H-shaped series resonant beams with the same shape, specification and material in the management center and edge of a single crystal silicon integrated IC surface. High-frequency oscillations are made in the control loop of the resonant circuit. When the working pressure on the left and right surface of the single crystal silicon wafer is different, it will cause deformation, resulting in the frequency reduction of the series resonance beam of the management center due to the compression force, and the frequency increase of the edge series resonance due to the tensile force.

EJA530E features include:

l Accuracy ±0.055%

l Stability ±0.1% URL/10 years

l Response time 90ms

l Provide communication protocols such as HART 5/7, HART (1~5V DC) low power consumption, FF fieldbus, PROFIBUS PA and BRAIN

The built-in display table of the EJA-E series transmitter can display all measurement data, as well as alarm codes and bar graphs, etc., and can also be programmed according to your needs. In addition, the display meter operates on a separate circuit, independent of, and not affected by, the output signal.

Diagnostic function:

EJA-E series transmitters have 40 self-diagnostic functions, two of which are unique features. One is the Back-Check patented technology, which confirms and detects the correctness of the calculation through real-time reverse calculation. Second, DPharp is an active sensor. Even if the input pressure does not change, the sensor will continue to output the corresponding signal. When the sensor signal is interrupted, the transmitter can detect the failure of the sensor for the first time. When the passive sensor has no signal output, it is impossible to judge whether the pressure has not changed or the sensor has failed.

How to choose capsule

The Yokogawa EJA530E pressure transmitter is a high-performance transmitter for measuring absolute pressure and pressure, mainly flow, level, density and pressure of liquids, gases or steam. Among all the transmitters in the Yokogawa EJA-E series, the one that measures pressure is the Yokogawa EJA430E. Today we are going to tell you how to choose the right Yokogawa EJA530E pressure transmitter capsule.

Yokogawa EJA530E pressure transmitter has a total of four types of diaphragms, respectively code ABCD. Each of the capsules has a corresponding range. Yokogawa transmitters have an accuracy ratio. Today, the highest accuracy ratio of pressure transmitters produced by Yokogawa has reached 0.055%. Yokogawa's accuracy ratio is between 0.02% and 0.06%. There is actually a percentage environment here. If all the ranges are unified into one range, and then according to the percentage of accuracy, then we will have a deviation in the measurement effect and the response will become larger.

The range of Yokogawa EJA530E pressure transmitter is 10-200kPa, 0.1-2MPa, 0.5-10MPa, 5-50MPa respectively. Pay attention to the unit on the back of the range, and be sure to distinguish the relationship between KPA and MPA. 1MPa=1000kPa, 1kPa=1000Pa. If your range is in PA, it is usually used to measure differential pressure. If its range is less than 10KPA, we need to choose Yokogawa EJA430 pressure transmitter.

How to choose the bellows of Yokogawa EJA530E pressure transmitter, we mainly confirm the range from the on-site working conditions, and then we can select the appropriate bellows according to the range of the four bellows.

If you have anything else that you don't understand or select about Yokogawa transmitters, you can contact our technical engineers for help.