Modell SET-276
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Setra Systems has been a technology leader in Environmental Pressure Measurement for over three decades. The Model 276 is an extremely accurate and stable transducer based on the proven Setraceram™ sensing element. The glass fused ceramic capacitive sensing capsule is the heart of Setra’s environmental pressure transducers because of its inherent thermal stability, low hysteresis and fundamentally simple design.
Another major feature of the 276 is Setra’s custom Application Specific Integrated Circuit (ASIC). The ASIC works hand-in-hand with the Setraceram™ sensor to achieve long-term stability and high accuracy, unmatched by other manufacturers - even at a much higher cost. The ASIC circuit allows the 276 to operate with an excitation as low as 5 VDC for remote battery or solar powered applications.
The 276 is designed specifically to give maximum flexibility to system integrators and OEM’s. The standard unit has a convenient mounting bracket and simple 1/8" tube fitting for quick installations. Its low cost, small size and available options make it application configurable.
If your OEM environmental application requires low cost, combined with superior performance, specify Setra’s Model 276 and apply the savings to the bottom line.
| Spezifikationen | |||
|---|---|---|---|
| Performance Data | |||
| Accuracy RSS (at constant temp) | ±0.25% FS | [1][2] | |
| Compensated Temperature Range | 0 to +55°C | [3] | |
| Zero Shift (Over Compensated Range) | 1% FS | ||
| Span Shift (Over Compensated Range) | 1% FS | ||
| Resolution | Infinite, limited only by output noise level (0.0005% FS) | ||
| Time Constant | 10 milliseconds to reach 90% final output with step function pressure input. | ||
| Long Term Stability | 0.25% FS/6 months | ||
| Environmental Data | |||
| Operating Temperature | -18 to +79°C | [4] | |
| Storage Temperature | -55 to +121°C | ||
| Vibration | 2g from 5 Hz to 500 Hz | ||
| Shock | 50g (Operating, 1/2 sine 10 ms) | ||
| Acceleration | 10g | ||
| Pressure Media | Non-condensing air or gas compatible with stainless steel, alumina ceramics, gold and elastomer. | ||
| Physical Description | |||
| Case | Stainless Steel | ||
| Electrical Connection | 2ft. Multiconductor Cable | ||
| Pressure Fitting | 1/8" Tube Fitting | ||
| Electrical Data (Voltage) | |||
| Circuit | 3-Wire (Exc, Out, Com) | [5] | |
| Excitation Output (Specify One) 12 VDC (9.0 to 14.5) 24 VDC (21.6 to 26.0) 5 VDC (4.9 to 7.1) | 0.1 to 5.1 VDC 0.1 to 5.1 VDC 0.5 to 4.5 VDC | [5] | |
| Power Consumption | 0.2 Watts (24 VDC) | ||
| Output Impedance | 5 ohms | ||
| Output Noise | <200 microvolts RMS (0 to 100 Hz) | ||
| Hinweise | |||
|---|---|---|---|
| [1] | RSS of Non-Linearity, Hysteresis and Non-Repeatability. | ||
| [2] | FS = 300mb for 800-1100mb range; 500 for 600-1100mb range; and 20 PSI for 0 to 20 PSIA. | ||
| [3] | Units calibrated at nominal 70°F. Maximum thermal error computed from this datum. | ||
| [4] | Operating temperature limits of the electronics only. Pressure media temperatures may be considerably higher or lower. | ||
| [5] | There are separate leads for +Exc, -Exc, +Out, -Out. The -Exc and -Out are commoned internally. The shield is connected to the case. For best performance, either the -Exc or -Out should be connected to the case. Unit is calibrated at the factory with the -Exc connected to the case. The insulation resistance between all signal leads tied together and case ground is 100 megohms minimum at 25 VDC. | ||
| [6] | Zero and Full Scale Outputs are factory set to within ±0.25% Full Scale. | ||
| Verfügbare Optionen | ||||
|---|---|---|---|---|
| (715) Higher Accuracy | ||||
| Accuracy | 0.1% FS (RSS) | |||
| (803)-(825) Custom Cable Length | ||||
| Cable Length | Up to 25 ft. Please specify when ordering (e.g. 805 for 5 ft. cable) | |||
| (839) 1/8" NPT Pressure Connection | ||||
| Pressure Connection | 1/8" NPT | |||
| (901) Calibration Certifificate Option | ||||
| Supplied with Sensor | 11-point calibration certificate | |||
