ESMDPSW LCD/LED display differential wind pressure transmitter with 4-20mA
Working Principle
The differential pressure transmitter uses imported pressure chips, and the sensitive element forms resistors through processes such as diffusion or ion implantation, which are connected into a Wheatstone bridge. Using micromachining technology, a pressure-sensitive diaphragm is formed beneath the bridge. When pressure is applied to the diaphragm, the resistance value changes, generating a linear output signal proportional to the applied pressure. By applying a DC power supply to the Wheatstone bridge, a DC voltage output signal is produced. After secondary conversion circuitry, a two-wire 4-20mA output is achieved.
Product Features
1. Compact design, easy to install, with an aluminum alloy casing for protection
2. Damping filter design minimizes the impact of dynamic pressure
3. Can be used for differential pressure, gauge pressure, and negative pressure measurements
4. Optional low-power LCD display suitable for wide temperature ranges
5. Zero and full-scale can be adjusted on-site
6. Output signal, electrical connections, and pressure interfaces can all be customized
Product detail



Technical Specifications
|
Measuring range |
-5KPA~0~5KPA |
|
Measuring medium |
GAS |
|
Accuracy class |
0.5% |
|
Output signal |
4-20mA (no display ; LED display ; LCD display );RS485 |
|
Supply voltage |
12-30VDC |
|
Stability |
≤0.1%FS/YEAR |
|
Overload capacity |
150% |
|
Ambient temperature |
-20~60℃ |
|
Medium temperature |
-20~60℃ |
|
Electrical connections |
Direct outlet |
|
Installation method |
M8 tower connector; PC8-M6 quick-connect fitting |












