Microsensorcorp MDM490 uses a piezoresistive differential pressure sensor as the sensing element. Silicon oil is filled in between the die and two diaphragms, when measured differential pressure is added on two diaphragms, the pressure could be transferred onto the die through silicon oil.
Sensor die connects with amplifier circuit through wires, using semi-conductor piezoresistive effect, transforming differential pressure signal into an electric signal. The whole product is used for differential pressure measurement of petroleum, chemical- industry, power station hydrology, etc
Microsensorcorp MDM490 Features
- Full stainless steel construction, compact size, easy installation;
- Laser welding, full-sealed construction; protection IP65;
- Using a piezoresistive differential pressure sensor, 316L isolated diaphragm;
- Temperature compensation and aging, stable performance;
- Zero and span adjustable outside;
- Ex-proof version MDM490 conforms to 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
Electric Performance
- Power supply: 2-wire 15V~28V DC; 3-wire 15V~28V DC
- Output signal: 2-wire 4mA~20mA DC; 3-wire 0/1V~5V DC， 0mA~10/20mA DC
- Electrical connection: plug connection or Φ7.2mm 7-pin cable
- Response time(10%~90%): ≤1ms
- Insulation resistor: 100MΩ,500V DC
Construction Performance
- Housing: stainless steel 304
- Diaphragm: stainless steel 316L
- O-ring: Viton
- Filled liquid: silicon oil
Environment Condition
- Shock effect: ≤1% at 3gRMS, 30Hz~2000Hz
- Impact: ≤1% at 100g, 10ms
- Media: liquid or gas that is compatible with construction material
Microsensorcorp MDM490 Specifications
| Range code | 0A | 02 | 03 | 07 | 08 | 09 | 10 | 12 | 13 |
| Unit | bar | ||||||||
| Measure Range | 0~0.35 | 0~0.7 | 0~1 | 0~2 | 0~3.5 | 0~7 | 0~10 | 0~20 | 0~35 |
| +overpressure | 0.7 | 1.5 | 2 | 4 | 7 | 14 | 20 | 40 | 70 |
| -overpressure | 0.35 | 0.7 | 1 | 2 | 3.5 | 7 | 10 | 10 | 10 |
| Max. static pressure | ≤200bar | ||||||||
Notes
- We suggest installing tri-valve between the measured point and transmitter to protect the media adding on the transmitter’s positive and negative cavities slowly;
- We suggest to make two pressure ports horizontally to reduce the installation direction effect;
- Please pay attention that the static pressure should be less than 200, transmitter’s positive and negative cavities should be in the rating pressure range;
- Please note ex-proof, M6, or M7 options in the order if the user needs them;
- For digital indicator information, please refer to the MPM490 datasheet;
- 6.If the user has a special requirement, please feel free to contact our company.
Download Datasheet: MDM490, Microsensorcorp-Differential Pressure Transmitter
Ref: Microsensorcorp.com
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