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MRA21

OEM Piezo-Resistive Pressure Sensor

MRA21 series with SS316L or hastelloy diaphragm is a rugged Piezo-resistive silicon technology based pressure sensing element suitable for OEM applications in harsh environments. This compact pressure sensor offers great flexibility and reliability for a wide range of applications with highly competitive pricing.
MRA21 is available in pressure ranges from -1 to 1000bar with an output of mV. It is suitable for pressure measurement of gases & liquids compatible with SS316L. While the standard Precision is 0.5% FS, you can optionally get a precision of 0.25% FS.
The robust construction of MRA21 with its high performance makes it ideal for demanding long term applications.

MRA21

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MRA21 series with SS316L or hastelloy diaphragm is a rugged Piezo-resistive silicon technology based pressure sensing element suitable for OEM applications in harsh environments. This compact pressure sensor offers great flexibility and reliability for a wide range of applications with highly competitive pricing. MRA21 is available in pressure ranges from -1 to 1000bar with an output of mV. It is suitable for pressure measurement of gases & liquids compatible with SS316L. While the standard Precision is 0.5% FS, you can optionally get a precision of 0.25% FS. The robust construction of MRA21 with its high performance makes it ideal for demanding long term applications.

Product Tags

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Technology Piezo resistive
Type OEM Pressure Sensing Element
Standard Measurement Range (bar) [-1/0], [-0.2/+0.2], 0.2, 1, 4, 6, 10, 16, 25, 50, 100, 400, 600, 1000, Other non standard range
Purpose and Application General Purpose, Corrosive Media, Compact Size / Miniature, Low voltage Excitation
Accuracy (combined LRH) 0.25% FS, 0.5% FS
Output Signal ~ 70mV, ~ 40mV
Pressure Reference Abs.: Absolute (0 at vacuum), SG: Sealed Gauge (0 at 1bar), VG: Vented Gauge (0 at atmospheric pressure)
Process Connection No Pressure Port, G1/4(¼" BSPP male), G1/2(½" BSPP male), Others
Electric Connection 4-wire, 6 pin connection
Protection Level No
Overload Rating 150%
Long Term Stability <0.2% FS/year
Diaphragm Material Stainless Steel 316L, Hastelloy, Titanium
Compensated Temp. Range 0 to 70°C
Operating Temp. Range -20 to +80°C
Temp. Coefficient of Zero 0.02% FS /°C
Temp. Coefficient of Span 0.02% FS /°C
Input Resistance 2-6kΩ
Output Resistance No
Insulation resistance 100MΩ @ 50VDC
Zero offset ≤ ±3mV

High Measuring Accuracy

Pressure Measurement Range of -1 to 1000bar

Compact and Rugged Model

Wide Range of Media Compatibility

Low Static and Thermal Errors

  • Process control systems
  • Production machinery
  • Hydrology research
  • Machine tool control
  • Air conditioning and compressed air lines
  • Chemical industries
  • Agricultural equipment
  • Open cut mining
  • Hydraulic pumps Power plants