[MDM293]
Φ12.6×18mm
2Bar ‒ 35Bar
Compensated temperature: 0~70℃
[MDM290]
Φ19×26mm
0.35Bar ‒ 35Bar
Laser Trimmed Thick-film Circuit Board
[MDM291]
0bar~0.35bar…20bar
Fully Welded
Differential pressure sensor
[MDM7000DP]
Accuracy: ±0.075%，±0.05%，±0.1%URL
Range: 60mbar~100bar
Long-term stability: ±0.1%SPAN/5years
Maximum turndown ratio：100：1
[MDM490]
0bar~0.35bar...35bar
Accuracy: ±0.5%FS
4~20mA DC 0/1~5V DC 0~10/20mA DC
[MDM390]
Output: mV
Accuracy: 0.25%FS
Max. static pressure 20MPa
[MDM492]
0~0.01bar / 0~0.025bar / 0~0.07bar
Accuracy: ≤1%FS
Output: 4~20mADC(2-wire)
[MDM4901FL]
0bar~0.35bar...35bar
Accuracy: ±0.5%FS
Oxygen DP Measurement
The differential pressure transducer measures the pressure difference between two points. The difference between differential pressure sensors and general pressure sensors is that they have two pressure interfaces. Differential pressure sensors are generally divided into positive pressure end and negative pressure. In general, the pressure of the positive pressure end of the differential pressure sensor should be greater than the pressure of the negative pressure section to measure.
The piezoresistive differential pressure sensor applies the two pressures to be measured to the diaphragm with piezoresistive elements on both sides. Upon sensing the pressure, the corresponding diaphragm deforms and causes a change in the resistance of the piezoresistive element. Differential pressure is measured using the change in resistance of a piezoresistive element across a curved diaphragm.
It is important to note that most differential pressure sensors are designed to measure lower differential pressures, not high differential pressures, that's why the range of differential pressure sensors is 0~0.35 bar... 35 bar. High differential pressure measurements can be made using two independent pressure transducers and the difference is calculated.
The differential pressure transducer or differential pressure transmitter are all differential pressure sensors. It is called differently while means the same in most situations depending on the countries and companies as differential pressure transducers are mostly used in the USA. In Micro Sensor, we call the sensitive element a differential pressure sensor that usually outputs a millivolt signal. The differential transducers and differential pressure transmitters usually output digital signals like 4mA DC-20mA DC, Modbus, HART, etc.
• Ensure that the pressure on the high-pressure side of DP sensors is not less than the pressure on the low-pressure side.
• When installing and using the pressure-sensitive element, please keep it as horizontal as possible. This approach is to reduce the influence of installation inclination angle on the measurement accuracy of sensitive components.
• External resistors to compensate for temperature drift: It is recommended that the external resistors be connected as close as possible to the differential pressure-sensitive components.
The differential pressure transducers generally apply for differential pressure monitoring and control of water, oil, and gases. It also can measure the liquid height as a level sensor. Micro Sensor's differential pressure sensors and transmitters are suitable for differential pressure measurement of oil tanks, water tanks, and pipelines in industries like petroleum fields, chemical plants, etc.
Miconex 2005 was ceremoniously held at Shanghai Everbright Convention and Exhibition Center from Sept.13 to Sept.16, 2005. The exhibition is a high level fair in this fields, about 500 domestic and aboard exh...
Different size pressure sensors are needed based on applications for pressure measurement and control in hydraulic, hydropower, HVAC and irrigation application, etc.
Micro Sensor offers pressure sensors of silicon oil-filled for liquid and air pressure measurement. It is piezoresistive with both differential pressure sensors and compound types available.
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