Microsensor Corp MDM3051SDAP Intelligent Pressure Transmitter

Microsensor Corp MDM3051SDAP Intelligent Pressure Transmitter series is used for level, density and pressure measurement of liquid, gas and steam. Then it will output 4mA~20mA DC HART signal and also it could be connected to MS-HART375 hand communicator or RSM295  Modem to do the specification setting and process control.Bracket Installation Absolute Pressure Transmitter (DAP)

  • Measured media: gas,steam, liquid
  • Measured range(with no shift): 0bar~0.4bar…30bar
  • Basic error: ±0.075%
  • Diaphragm contacting with liquid: Stainless Steel 316L, Hast-alloy

Differential pressure transmitter includes two functional units:

  1. Main unit
  2. Auxiliary unit

The main unit includes a sensor and process connection, working principle as followed:

The sensor module uses whole welded technology, which has a compact overload diaphragm, a differential pressure sensor, and a temperature sensor. The temperature is taken as a reference for temperature compensation.

The positive end of the differential pressure sensor is connected with the high-pressure chamber of the sensor capsule; the negative end is connected with the low-pressure chamber of the sensor capsule. Through the isolated diaphragm and filling liquid, the differential pressure is transmitted to the silicon die in the inner of the differential pressure sensor, which makes the resistor of the sensor die change.

So the detection system outputs a different voltage. The output voltage is in proportion to the pressure variation, and then it is transmitted to standard output by adapter and amplifier.

Microsensor Corp MDM3051SDAP Standard Specification

(Standard zero as the reference calibration range, Stainless steel 316L diaphragm, filling liquid is silicone oil)

Performance Specification

Reference Basic error for range calibration

Reference Basic error for range calibration

(including linearity, hysteresis and repeatability from zero): ± 0.075%)

If TD>10(TD=Max. Pressure range/calibration range), the Basic error is ± (0.0075×TD)%

Another Article:


2-wire, 4mA~20mA DC, HART communication protocol, linearity or square root output optional. Output signal limit: Imin=3.9mA, Imax=20.5mA.

Response time

The damping constant of amplifier parts is 0.1s, time constant of sensor is 0.1s~1.6s, which is depended on the pressure range and pressure range proportion. The additional adjustable time constant is 0.1s~60s.

Warm-up time

< 15s


Please refer to next page”EMC table”

Microsensor Corp MDM3051SDAP Physical Specification


Diaphragm: Stainless Steel 316L, Hast-alloy C Process Connection: Stainless steel 304 Filling liquid: silicone oil

Transmitter housing: Aluminum alloy material, epoxy resin glue sprays on the surface

Housing sealing ring: NBR Nameplate: Stainless steel 304


3.3kg (not including LCD display, mounting support and process connection)

Housing protection



  1. A degree: performance is normal within the technical standard range during
  2. B degree: During testing, the function or performance is lowered or lost temporarily, but it could be recovered by itself. Actual operation state, storage and data will keep the

Download Datasheet: MDM3051S-DAP, Microsensorcorp-Intelligent Pressure Transmitter

Ref: Microsensorcorp.com