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Differential Pressure Sensor MDM290

Differential Pressure Sensor MDM290
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MDM290 Piezoresistive OEM Differential Pressure sensor Features ·Pressure range: 0kPa～35kPa…3.5MPa ·Constant current/ Constant Voltage power supply ·Isolated construction, possible to various fluid media ·OEM differential pressure sensor ·316L stainless steel ·High static pressure 20MPa ·1.5 times overpressure Application ·Industrial process control ·Differential pressure measurement ·Gas, liquid pressure measure ·Pressure checking meter ·Pressure calibrator ·Ventura and eddy-current flow meter Introduction MDM290 piezoresistive differential pressure sensor is OEM differential pressure sensor with stainless steel isolated diaphragm. It has integrated construction, high static pressure, high stablity and good reliability. The high and low pressure sides are protected by isolated diaphragm. It can be used for measuring corrosive and conductive fluid media. The measured differential pressure is transmitted onto the die through the diaphragm and filling silicon oil so that the sensor could measure differential pressure precisely. The sensor is tested automatically, and compensated zero and temperature performance with provided resistors. The installation dimension is consistent with general products which makes the sensor has a good interchangeability. It is widely used for industrial process control and differential pressure measure fields, etc. Electric Performance Power supply: ≤2.0mA DC;≤10V DC Electric connection: 100mm silicon rubber flexible wires Common mode voltage input: 50% of input (typ.) Input impedance: 3kΩ～8kΩ Output impedance: 3.5kΩ～6kΩ Response (10%～90%): <1ms Insulation resistor: 100MΩ, 100VDC Overpressure: refer to Order Guide Max. static pressure: 20MPa Zero drift/static pressure: ≤0.5mV/MPa Construction Performance Diaphragm: stainless steel 316L Housing: stainless steel 316L Pin: silicon rubber flexible wire O-ring: Viton Net weight: ～36g http://www.microsensor.cn Add: No.18,Yingda Road Baoji,P.R.China, Tel: +86 917 3600739

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Environment Condition Shock: no change at 10gRMS,(20～2000)Hz Impact: 100g, 11ms Media compatibility: the gas or liquid which is compatible with stainless steel and Viton Basic Condition Media temperature: (25±1)℃ Environment temperature: (25±1)℃ Shock: 0.1g (1m/s2) Max. Humidity: (50%±10%)RH Local air pressure: (86～106)kPa Power supply: (1.5±0.0015)mADC Basic Specification Item* Zero output FS output Zero thermal error Span thermal error Compensated temp. range Working temp. range Storage temp. range Long-term stability *testing at basic condition Outline Construction (Unit: mm) 5.4 The...

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Electric Connection Outer compensated resistor (providing resistor value) Wire color Wire color With compensated circuit board Note: The actual electric connection method, please check the parameter label enclosed with products. 1. The resistance bridge on the left of the dashed is sensor’s bridge circuit; 2.MDM290 sensor has no laser trimming board, it compensates zero and temperature drift by outer compensated resistors, the connection to see the above chart; connect zero trimming resistor R3(R4), the other R4(R3) is short circuit as negative power supply; R1 or R2 is zero temperature...

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Notes 1.Please notice that one side of the leading wire is High Pressure Side, the other is Low Pressure Side. Or identify High Pressure Side by mark “+”, and identify Low Pressure Side by mark “-“ carefully; 2.During application, please pay attention that the pressure of high pressure side should be higher than that of low pressure side; 3.Please pay attention to protect the diaphragm, prevent it from damaging; 4.Please do not pull or drag the 6 leading wires; 5.Temperature resistant range of standard Viton O-ring of sensor is -20℃ ～ 250℃. When working temperature is lower than -20℃, or...

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