Posted in | Pressure Sensors

Uncompensated Package Sensor – RPD Series

The Merit Sensor RPD Series uncompensated packaged sensor is meant for the application of a broad range of pressures to the sensing element’s backside. The RPD is a flexible platform with exceptional media compatibility. Its small, compact design is perfectly suited for industrial and medical applications.

Company: MEMS piezoresistive pressure sensors are designed and fabricated at Merit Sensor’s Utah, USA engineering and fabrication facility. Merit Sensor focuses on the customization of technically better pressure sensors to solve customers’ pressure sensing requirements for the automotive, industrial, medical, and aerospace industries.

Technology: Merit Sensor utilizes a piezoresistive Wheatstone bridge with a chemically etched silicon diaphragm. The company’s products are all RoHS compliant.

Capabilities: Merit Sensor designs, engineers, fabricates, dices, assembles, and tests their products from a modern facility near Salt Lake City, Utah.

Features

  • Uncompensated, packaged pressure sensor
  • Typical average full scale output: 150 mV
  • Pressure Range: 0 to 500 psi (0 to 34.474 bar)
  • Temperature Range: -40 °C to +85 °C
  • Size: 7.6 x 8.9 x 6.6 mm
  • Media: Air, liquids, and gases (to be determined on an application-by-application basis with Merit engineering team)
  • Type: Backside gage
  • Excellent performance in both constant current and constant voltage applications
  • Designed for a soldered connection to ribbon cable, wires, or flex strip
  • Simple pressure source attachment and electrical connection
  • Customization: Pressure port, pressure range
  • Shipping: Tape and reel

Application Examples

  • Medical inflation
  • Industrial process control
  • Water pressure and flow management

RPD Series Part Number Configurator

RPD Series Part Number Configurator

Specifications

Parameter Minimum Typical Maximum Units Notes
Electrical & Environmental
Excitation (In) 5 15 V Maximum: 3 mA
Impedance 4000 5000 6000 Ω
Operating Temperature -40 85 °C Sentium® technology
Storage Temperature -55 100 °C
Performance
Offset -10 0 10 mV/V Zero pressure; gage only; @ 25 °C
Non-linearity -0.2 0 0.2 % FSO Best Fit Straight Line; @ 25 °C
Pressure Hysteresis -0.1 0 0.1 % FSO @ 25 °C
Temp Coeff – Zero -25 0 25 μV/V/°C -40 °C to 85 °C
Temp Coeff – Resistance 2300 2800 3300 PPM/°C -40 °C to 85 °C
Temp Coeff – Sensitivity -1500 -2200 -2500 PPM/°C -40 °C to 85 °C
Thermal Hysteresis -0.1 0 0.1 % FSO Zero pressure
Burst Pressure 2X Room Temperature
Full-Scale Output (@ 5 volts Excitation)
15 psi (1 bar; 103 KPa) 60 75 90 mV Closed bridge only
50 psi (3.4 bar; 345 KPa) 100 125 150 mV
100 psi (6.9 bar; 689 KPa) 120 150 180 mV
300 psi (20.7 bar; 2068 KPa) 120 150 180 mV
500 psi (34.5 bar; 3447 KPa) 140 175 210 mV

Dimensions (millimeters)

Packaging And Shipping (millimeters)

Electrical

Electrical

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