MDM491 Piezoresistive Differential Pressure Transmitter
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MDM491 Piezoresistive Differential Pressure Transmitter - 1

MDM491 Piezoresistive Differential Transmitter MDM491 Piezoresistive Differential Pressure Transmitter Features ·Full stainless steel construction, compact size, easy installation; ·Welding and full-sealed construction; housing protection IP65; ·Using diaphragm; ·Temperature compensation and aging, stable performance; ·Zero and span adjustable outside for plug connection version. Introduction MDM491 Piezoresistive Differential Pressure Transmitter is a compact full-welded (no sealed ring) differential measurement element. Silicon oil is filled in between die and two diaphragms, when the measured differential pressure is added on two diaphragms, 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 output signal from Weston Bridge on the sensing die has a good linear relationship with differential pressure, so the measured differential pressure could be measured precisely. The whole product is used for differential pressure measurement of various gases and liquids in pipeline in many fields including petroleum, chemi-industry, power station and hydrology, etc. Specification Range Code Pressure Range Static Pressure Zero Thermal Span Thermal Static Pressure Effect http://www.microsensor.cn Add: No.18,Yingda Road Baoji,P.R.China,

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MDM491 Piezoresistive Differential Pressure Transmitter - 2

MDM491 Piezoresistive Differential Transmitter Compensation temp. Operation temp. Storage temp. Electric Characteristic Power Supply:15V~28V DC Output Signal: 4mA~20mA DC(2-wire); 0V/1V~5V/10V DC, 0mA~10mA/20mA DC(3-wire) Electric Connection: plug or cable Response Time:(10%~90%): ≤1ms Insulation Resistance: 100MΩ, 50VDC Construction Material Housing: SS 1Cr18Ni9Ti Diaphragm: SS 316L Filled liquid: silicon oil Environment Condition Shock Effect: ≤±1% at 3gRMS30Hz~2000Hz Impact: ≤1% at 100g, 10ms Media: liquid or gas which is compatible with construction material Outline Construction Unit:mm...

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MDM491 Piezoresistive Differential Pressure Transmitter - 3

MDM491 Piezoresistive Differential Transmitter Electric Connection Plug Connection: Order Guide Piezoresistive Differential Pressure Transmitter Output Signal Pressure Range Construction Material Diaphragm Pressure port Housing Code Others Ci M20x 1.5 male with face type seal M3 2>\ LCD digital indicator (only 4~20mADC) http: //www.micro sensor, cn MICRO SENSOR CO.,LTD.

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MDM491 Piezoresistive Differential Pressure Transmitter - 4

MDM491 Piezoresistive Differential Transmitter 1 3 2 LED digital indicator (only 4~20mADC) 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 direction effect; 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.Digital indicator information, please refer to MPM480 datasheet; 5. If the...

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