Microsensorcorp MPM4891B Pressure Transmitter is a newly developed pressure transmitter part with high accuracy and stability. It is made up of a piezo-resistive pressure sensor and a specialized processing circuit. It is stable, reliable, compact in size. With a zero clearing button and manual pressure calibration function, it is easy to operate. MPM4891B is with an OEM package, suitable for application and development for various pressure transmitters.
Microsensorcorp MPM4891B Pressure Transmitter Features
- Safe, reliable
- Short circuit protection and reversed polarity protection
- 2-wire current output
- Manual zero-clearing function
- Manual secondary calibration
- Compact size, easy installation
Button Function
- Without pressure, press the button for 5s for zero clearings, it outputs 4mA
- If the transmitter is excited while pressing the button, it enters calibration mode, the output can be calibrated by LED indication. Please see the below chart for
Notes
- Please pay attention to protect sensor isolated diaphragm to avoid damaging the sensor or affecting the
- Please make sure the measured media shall be compatible with the contacting
- If users have a special requirement, please contact us
Specifications
| Range | 0bar~0.1bar…400bar |
| Over pressure | 1.5FS |
| Pressure type | Gauge, Absolute or Sealed Gauge |
| Accuracy | ±0.5%FS |
| Power Supply | 11V~28V DC |
| Output | 4mA~20mA DC (2-wire) |
| Load Resistance | ≤ (U-11) / 0.02(Ω) |
| Zero Thermal Drift | ±0.02%FS/℃ |
| FS Thermal Drift | ±0.02%FS/℃ |
| Long-term Stability | ±0.3%FS/year |
| Operation Temperature | -25℃ ~75℃ |
| Storage Temperature | -40℃ ~80℃ |
| Relative Humidity | 0%~85% |
| O-ring | Viton |
| Diaphragm | SS316L |
| Leading Wire | silicone rubber |
| Gross Weight | 22g |
| Media Compatibility | liquid or gas compatible with stainless steel and viton |
| Button Operation | Phenomenon | Function |
| Excite power supply after pressing button | LED light on | Enter calibration mode |
| Pressurize to lower limit of pressure | LED flash 2 times | Zero calibration finished, low current calibration finished |
| Pressurize to upper limit of pressure | LED flash 3 times | FS calibration finished, middle current calibration finished |
| Pressurize to upper limit of pressure | LED flash 4 times | Calibration coefficient storage finished, high current calibration finished |
Ref: Microsensorcorp.comDownload Datasheet: MPM4891B, Microsensorcorp-Pressure Transmitter