Modell SET-280

  • Low Cost/High Performance
  • 0.11% Full Scale Accuracy
  • High Level Output: 0-5 VDC or 4-20 mA
  • One-Piece Stainless Steel Sensor
  • Small Size and Light Weight
  • Temperature Compensated for Low Thermal Error
Angebot anfordern

Setra Systems Model 280G pressure transducer is intended for low to high pressure measurements of gases or liquids in applications requiring rugged packaging, high performance and affordability. The 17-4 PH or 15-5 PH stainless steel capacitance sensing element, coupled with an IC-based circuit, assures excellent accuracy and long term stability.

The stable electronic circuit, combined with Setra’s variable capacitance sensor, results in the ultimate design simplicity. The sensor features a 17-4 PH or 15-5 PH stainless steel pressure sensor and an insulated electrode, which forms a variable capacitor. As the pressure increases, the capacitance decreases. The change in capacitance is detected and converted to a linear DC output signal.

The high level 0-5 VDC or 4-20 mA output signal requires no additional signal conditioning and results in excellent stability, accuracy and fast dynamic response, making the 280G series ideal for high performance applications.

Performance Data
Accuracy RSS
(at constant temperature)
±0.11% FS[1]
Non-Linearity (BFSL)±0.1% FS
Hysteresis0.05% FS Pressure Fitting[2]
Non-Repeatability0.02% FS
Thermal Effects[3]
Compensated Range0 to +65°C
Zero/Span Shift1.8 %FS/50°C
Warm-Up Shift0.5% FS (0.1% FS residual shift after 5 minutes)
Physical Description
CaseStainless Steel with O-Ring
Electrical Connection1" Edge Card with Space Lugs and Dust Boot
Pressure Fitting1/4" - 18 NPT Internal
Pressure CavityVolume 0.04 in.<sup>3</sup>
Volume Increase5 x 10<sup>-5</sup> in.<sup>3</sup>
Weight5 oz
Environmental Data
Operating Temperature-18 to +80°C[5]
Storage Temperature-54 to +93°C
Vibration2g from 5 Hz to 500 Hz
Pressure MediaGases or liquids compatible with 17-4 PH or 15-5 PH Stainless Steel.[4]
Electrical Data (Voltage)
Circuit3-Wire (+In, +Out, Com)
Excitation15 to 32 VDC
Output0 to 5 VDC[7][8]
Power Consumption0.25 watts (approx. 10mA at 24 VDC)
Output Impedance100 ohms
Output Noise100 microvolts RMS (0 Hz to 10 KHz)
Electrical Data (Current)
Output4 to 20 mA[9][10]
External Load0 to 800 ohms
Min. Supply Voltage (VDC)18 +0.02 x (Resistance of receiver plus line)
Max. Supply Voltage (VDC)32 + 0.004 x (Resistance of receiver plus line)

[1]RSS of Non-Linearity, Hysteresis and Non-Repeatability.
[2]0.1% FS for 10,000 psi range only.
[3]Units calibrated at nominal 70oF. Maximum thermal error is computed from this datum.
[4]Hydrogen not recommended for use with 17-4 PH or 15-5 PH Stainless Steel.
[5]Operating temperature limits of the electronics only. Pressure media temperatures may be considerably higher or lower.
[6]Shift in output reading of 0.05% FS/G typical, pressure port axis only.
[7]Calibrated into a 50K ohm load.
[8]Zero output factory set to 30mV nominal.
[9]Calibrated at factory with 24 VDC loop supply voltage and a 250 ohm load.
[10]Zero output and Span FS factory set to within ±0.16mA. Span (Full Scale) output factory set to within ±0.16mA.

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Operating Instructions
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