7kPa Low Range Welded Type Wire Connection Customized Differential Pressure Sensor (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.
Introduction
MDM491 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.
Certificates We Have
Company Overview
Products Family
FAQ:
1. Q: Are you manufacturer or trading company?
A: We are 48-year professional manufacturer of Pressure/ Level/ Temperature/Flow transmitters with 4~20mA, Hart, Rs485 & Modbus protocols, pressure sensors with SDI, I2C, 4~20mA, 0.5~4.5V and etc, and wireless IOT measurement transmitters. We provide high quality products with high competitive factory price.
2. Q: What's your quality control system?
A: As an ISO9001:2008 certificated manufacturer, we have strict quality control system, and each product is done fatigue testing, calibration, temperature compensation before shipment. High quality is guaranteed.
3. Q: Is there MOQ with your product?
A: We have no MOQ limits, 1pc for testing is acceptable.
4. Q: Do you provide customized products?
A: Yes, we can print your logo on our products; OEM, ODM & customization are welcomed.
5. Q: What is the warranty of your products? And after-sales service?
A: Our warranty time is 12 months after shipment, and our after-sales will respond with your questions in 24hrs, remote instruction by PC network is always available.
6. Q: What is lead time of your product?
A: We are factory, our lead time is always within 10~15 working days for products without customization, but lead time will vary based on different products. You can check detail lead time with our sales.
7. Q: What international certificates do you have for your products?
A: we have CE, RoHS, UL, ATEX as well as ship-use DNV etc.
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