1. Overview
This pressure transmitter has high sensitivity, high precision and strong anti-overload ability. Manufactured by imported sensors, the sensor and amplification circuit are highly integrated; The shell is an integral stainless steel tube, and the zero point and gain of the circuit do not need to be adjusted; Strong anti-interference ability, acid and alkali resistance, long-term stability and reliability.
2. How it works
The compact pressure transmitter uses imported pressure chips, and the sensitive components are connected into Wheatstone bridges by diffusion or ion implantation processes, and the pressure-sensitive diaphragms are formed under the bridges by micromachining technology. When pressure is applied to the diaphragm, the resistance value changes and a linear output signal is generated that is proportional to the applied pressure. We add a DC power supply to the Wheatstone bridge, and it will produce an output of a DC voltage signal. After the secondary conversion line, the two-wire system 4mA~20mA output is realized.
3. Functional characteristics
◆ Good stability, fullness, zero long-term stability up to 0.2%FS/year. In the range of compensation temperature 0°C~70°C, the temperature drift is less than 0.2%FS, and the temperature drift is less than 0.5%FS in the whole allowable operating temperature range.
◆ With reverse protection and current limiting protection circuit, the transmitter will not be damaged when the positive and negative poles are reversed during installation, and the transmitter will automatically limit the current within 35mA when it is abnormal.
◆ Solid structure, no moving parts, high reliability, long service life.
◆ Gas, water, oil and steam can be measured with high precision, and it is not affected by the mass of the measured medium.
◆ Easy installation, simple structure, economical and durable.
4. Main technical parameters
Measuring range |
(0~10)kPa~(0-40)MPa |
Maximum overload |
2 times the standard range |
Forms of pressure |
Gauge pressure, slightly differential pressure |
Accuracy class |
0.5%F· S |
Supply voltage |
24V DC |
Load resistance |
≤250Ω |
Measuring medium |
Vapor pressure or gases, liquids |
Long-term stability |
±0.2% F· S/year |
Ambient relative humidity |
≤95% |
Compensate for the temperature |
0℃~70℃ |
Operating temperature |
-10℃~70℃ |
5. Structural features
enclosure |
Stainless steel monolithic |
Main structure material |
SUS304、SUS316 |
Pressure connection |
M20×1.5 |