Low Range Differential Pressure Transmitter MDM490

Featured Product from Micro Sensor Co., Ltd.

Low Range Differential Pressure Transmitter MDM490-Image


·Full stainless steel construction, compact size, easy installation;

·Laser welding, full-sealed construction; protection IP65;

·Using piezoresistive differential pressure sensor, 316L isolated diaphragm;

·Temperature compensation and aging, stable performance;

·Zero and span adjustable outside;

·Ex-proof version MDM490 conforms to GB3836.4 standard; ex-proof certificate is approved;

·Ship-use product conforms to CCS Rules of Classification of Sea-going Steel Ships(2006); ship-use certificate is approved;

·CE and ROHS certificates



MDM490 uses piezoresistive differential pressure sensor as sensing element. Silicon oil is filled in between die and two diaphragms, when measured differential pressure is added on two diaphragm, the pressure could be transferred onto die through silicon oil. Sensor die connects with amplifier circuit through wires, using semi-conductor’s piezoresistive effect, transforming differential pressure signal into electric signal. The whole product is used for differential pressure measurement of petroleum, chemi-industry, power station and hydrology, etc.


Electric Characteristic

Pressure Range: :0-3.5MPa

Power supply: 2-wire 15~28VDC 3-wire 15~28VDC

Output signal: 2-wire 4~20mADC 3-wire 0/1~5VDC,0~10/20mADC

Electric connection: plug connection or Φ7.2mm 7-pin cable

Response time(10%~90%): ≤1ms

Insulation resistor: 100MΩ,50VDC


Construction Material

Housing: stainless steel 1Cr18Ni9Ti

Diaphragm: stainless steel 316L

O-ring: Viton

Filled liquid: silicon oil

Pressure port: G1/4 female


Environment Condition

Shock effect: ≤1% at 3gRMS, 30~2000Hz

Impact: ≤1% at 100g, 10ms

Media: liquid or gas which is compatible with construction material


Contact us for more information or email us sales@microsensor.cn