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Germantown, Maryland
Partly cloudy

Fri Nov 16 2018
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Compensated and Calibrated Pressure Sensors: SCX

By Duff and Macintosh

FEATURES

  • 0...1 to 0...150 psi
  • Precision temperature compensation
  • Calibrated zero and span
  • Small size
  • Low noise
  • High accuracy
  • High impedance for low power applications

 

APPLICATIONS

  • Medical equipment
  • Barometry
  • Computer peripherals
  • Pneumatic control
  • HVAC

 

GENERAL DESCRIPTION

The SCX series sensors will provide a very cost effective solution for pressure applications that require high accuracy over a wide temperature range. These internally calibrated and temperature compensated sensors were specifically designed to provide an accurate and stable output over a 0 to 70 °C temperature range. This series is intended for use with non-corrosive, non-ionic working fluids such as air, dry gases, and the like. Devices are available to measure absolute, differential, and gage pressures from 1 psi (SCX01) up to 150 psi (SCX150). The absolute (A) devices have an internal vacuum reference and an output voltage proportional to absolute pressure. The differential (D) devices allow application of pressure to either side of the pressure sensing diaphragm and can be used for gage or differential pressure measurements.

The SCX devices feature an integrated circuit sensor element and laser trimmed thick film ceramic housed in a compact nylon case. This package provides excellent corrosion resistance and provides isolation to external package stresses. The package has convenient mounting holes and pressure ports for ease of use with standard plastic tubing for pressure connection.

Because these devices have very low noise and excellent temperature compensation, they are ideal for medical and other high performance applications. The 100 micro-second response time also makes this series an excellent choice for computer peripherals and pneumatic control applications.

 

TECHNICAL SPECIFICATIONS

 

  SCX SCX...C
Pressure ranges Absolute 0...15 to 0...150 psi
(0...1 to 0...10 bar)
Differential / Gage / Vacuum 0...1 to 0...150 psi
(0...70 mbar to 0...10 bar)
Output signal (typical)
at Vs = 12 V
0...90 mV
Non-linearity and hysteresis
(typical, combined)
±0.1 %FSS ±0.2 %FSS
Pressure connection tube fitting (Ø 4 mm)
Size without nipples and pins (approx.) 27 x 29 x 12 mm