| Prod Model: |
MDM491 |
| Output: |
4mA~20mA DC(2-wire); 0V/1V~5V/10V DC, 0mA~10mA/20m |
| Pressure Range: |
0~0.035...2MPa |
Product Description
Wire Connection Differential Pressure Transmitter (MDM491)
Features•Full stainless steel construction, compact size, easy installation;
•Welding and full-sealed construction; housing protection IP65;
•Using piezoresistive differential pressure sensor, 316L isolated diaphragm;
•Temperature compensation and aging, stable performance;
•Zero and span adjustable outside for plug connection version.
IntroductionMDM491 Piezoresistive Differential Pressure Transmitter is a compact full-welded (no sealed ring) differential measurement element. 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 | 0A | 02 | 03 | 07 | 08 | 09 | 10 | 12 |
| Unit | kPa | MPa |
| Pressure Range | 0~35 | 0~70 | 0~100 | 0~200 | 0~350 | 0~700 | 0~1 | 0~2 |
| + overpressure | 70 | 150 | 200 | 400 | 700 | 1400 | 2.0 | 4.0 |
| -overpressure | 35 | 70 | 100 | 200 | 350 | 700 | 1.0 | 1.0 |
| Static Pressure | ≤20MPa |
| | Min. | Typ. | Max. | Unit |
| Accuracy | | | 0.5 | | ±%FS |
| Zero Thermal Error | ≤ 200kPa | | 0.75 | 1.25 | ±%FS,@35ºC |
| > 200kPa | | 0.5 | 0.75 |
| Span Thermal Error | ≤ 200kPa | | 0.75 | 1.25 |
| > 200kPa | | 0.5 | 0.75 |
| Stability | ≤ 200kPa | 0.5 | ±%FS/year |
| > 200kPa | 0.2 |
| Static Pressure Effect | 0.05 | ±%FS, per 100kPa |
| Compensation temp. | 0~70 |
ºC
|
| Operation temp. | -10~80 |
| Storage temp. | -40~120 |
| | | | | | | |
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 3gRMS,30Hz~2000Hz
Impact: ≤1% at 100g, 10ms
Media: liquid or gas which is compatible with construction material
Outline Construction
(Unit:mm)
(Plug connection) (Cable connection)
Plug Outline Construction and Arrangement Electric Connection:(1) Plug Connection| Pin | 2-wire | 3-wire |
| 1 | +V | +V |
| 2 | 0V/+OUT | GND |
| 3 | Null | +OUT |
(2) Cable Connection| Wire Color | 2-wire | 3-wire |
| Black | +V | +V |
| Red | 0V/+OUT | +OUT |
| White | Null | GND |
Order Guide: | MDM491 | Piezoresistive Differential Pressure Transmitter |
| | | Code | Pressure Range |
[0~X]
kPaMPa | Range Code | Pressure Range
kPa | Overpressure kPa | Range Code | Pressure Range
MPa | Overpressure MPa |
| + | - | + | - |
| 0A | 0~35 | 70 | 35 | 08 | 0~0.35 | 0.7 | 0.35 |
| 02 | 0~70 | 150 | 70 | 09 | 0~0.7 | 1.4 | 0.7 |
| 03 | 0~100 | 200 | 100 | 10 | 0~1.0 | 2.0 | 1.0 |
07
| 0~200 | 400 | 200 | 12 | 0~2.0 | 4.0 | 1.0 |
| | | Code | Output Signal |
| E | 4mA~20mA DC |
| F | 1V~5V DC |
| J | 0V~5V DC |
| Q | 0mA~10mA DC |
| U | 0mA~20mA DC |
| V | 0V~10V DC |
| | | Code | Construction Material |
| Diaphragm | Pressure port | Housing |
| 22 | SS 316L | SS | SS |
| | 24 | SS 316L | SS 316L | SS 316L |
| | | Code | Others |
| C1 | M20×1.5 male with face type seal |
| C2 | G1/4 male |
| C3 | G1/2 male |
| C4 | G1/4 female |
| B1 | 4-core plug connection |
| B2 | Cable connection length:1.5m |
| M3 | 3LCD digital indicator (only 4~20mADC) |
| M4 | 3LED digital indicator (only 4~20mADC) |
| | |
| MDM491 [0~100]kPa E 22 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 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 user has special requirement, please feel free to contact our company.
Micro Sensor Co., Ltd, the leading manufacturer of piezo-resistive pressure sensors and transmitters in China, was founded by Sino-US joint venture in 1993. We are providing pressure sensing & measuring solutions to customers all over the world.
With Digital Wide-Temperature Compensation, Non-linearity Correction and Data-Collection by Bus Operation, we supply users OEM pressure sensors, pressure transmitters, level transmitters, measuring and controlling instruments, which have high quality and reliable performance in the local on-site environment.
Based on more than 20 years production experiences, Micro Sensor now have manufacturing capacity of 1.2 million pieces pressure sensors and 400 thousand pieces transmitters in one year. And we are also capable to satisfy the customized specification and designs according to clients' Specified requirements.
Quality is the life of company. Micro Sensor executes I S O 9 0 0 1 International Management System strictly to make sure every procedure qualified in our production. Furthermore, the main products for pressure sensors and transmitters, are also certificated by C E, R o H S, C B, U L and A T E X respectively for different global markets.
Micro Sensor now does business with customers more than 70 countries. More and more global friends know Micro Sensor and make win-win cooperation with us. Wherever you are, whenever you are, find Micro Sensor for any pressure sensing & measuring question. We are looking forward to supporting you with our best services!
