Microsensor Differential Pressure Transmitter MDM490 Series

The Pressure Transmitter for Industrial Automation

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, chemiindustry, power station and hydrology, etc.

Main Features

• 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 Exia Ⅱ CT6 Ga standard; ex-proof certificate is approved
• Ship-use product conforms to CCS Rules of Classification of Sea-going Steel Ships(2018); ship-use certificate is approved
• CE and RoHS certificates

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Power supply

2-wire 15V~28V DC; 3-wire 15V~28V DC

Output signa

2-wire 4mA~20mA DC; 3-wire 0/1V~5V DC，

Electrical connection

plug connection or Φ7.2mm 7-pin cable

Response time(10%~90%)

≤1ms

Insulation resistor

: 100MΩ,500V DC

Housing

stainless steel 304

Diaphragm

stainless steel 316L

O-ring

Viton

Filled liquid

silicon oil

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Do you like to know how these sensors work? Check our article to find out about them:

Pressure sensor (Pressure Transducer, Pressure Transmitter, Pressure Switch, Pressure Gauge,Difference between all Terms.