Catalog excerpts
MDM490 Piezoresistive Differential Pressure Transmitter MDM490 Piezoresistive Differential Pressure Transmitter 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 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 Introduction 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. http: //www.microsensor.cn Add: No.18,Yingda Road Baoji,P.R.China, 721006 micro sensor co.,ltd
Open the catalog to page 1MDM490 Piezoresistive Differential Pressure Transmitter Electric Characteristic Power supply: 2-wire 15-28VDC 3-wire 15-28VDC Electric connection: plug connection or 07.2mm 7-pin cable 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 MICRO SENSOR CO.,LTD http: //www.microsensor.cn Add: No.18,Yingda Road Baoji.P.R.China,...
Open the catalog to page 2MDM490 Piezoresistive Differential Pressure Transmitter ~ 50 19 Plug Connection type Cable Connection Plug Outline and Pin Arrangement Electric Connection Plug Connection Cable Connec Wire color Exia transmitter is used in explosive environment; intrinsic safe system shall be composed by transmitter and safe barrier in the electrical connection. Be sure the safe barrier and power supply instrument are applied in a safe area. Exia proof transmitter is used in Hazardous zones, be cautious it is grounded. Please see the following picture: Hazardous Location Safe location Safe Power supply...
Open the catalog to page 3MDM490 Piezoresistive Differential Pressure Transmitter Piezoresistive Differential Pressure Transmitter Plug connection Cable connection Default length: 1.5m 31/2LCD digital indicator (only 4—20mADC) 31/2LED digital indicator (only 4—20mADC) Intrinsic safe version Exia II CT6( > 35kPa) /Exia II BT6Ga( = 35kPa) C4B2 the whole spec Order Note 1. We suggest to install tri-valve between the measured point and transmitter to protect the media adding on transmitter's positive and negative cavities slowly; 2. We suggest to make two pressure ports horizontally to reduce installation...
Open the catalog to page 4MDM490 Piezoresistive Differential Pressure Transmitter 3. Please pay attention that the static pressure should be less than 20Mpa, transmitter positive and negative cavity should be in the rating pressure range; 4. Please note ex-proof, M3 or M4 options in the order if the user needs ; 5. Digital indicator information, please refer to MPM480 datasheet; 6. If the user has special requirement, please feel free to contact our company. http: //www.microsensor.cn Add: No.18,Yingda Road Baoji,P.R.China, Tel: +86 917 3600739/3600832
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