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
SetraceramT 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 much higher cost. The ASIC
allows the 276 to operate with an excitation as low as 5 VDC for remote
battery or solar powered applications.
The Setra barometer needs to be installed in a sheltered location, such
as a Nomad® shelter box or Nomad 2 enclosure. The mounting shelf for the
12V rechargeable battery in the Nomad 2 has a mounting location designed
for the Setra barometer. The installation also requires a supplemental
battery or solar charging system to supply 12V power.
Model 276 Specifications
Excitation/ Output
12 VDC (9.0 to 14.50) / 0.1 to 5.1 VDC
24 VDC (21.6 to 26.0) / 0.1 to 5.1 VDC
5 VDC (4.9 to 7.1) / 0.5 to 4.5 VDC
Accuracy
(RSS Method)
±0.25% Full Scale
Type of Pressure
Barometric
Absolute
Pressure Ranges
600 to 1100 hPa/mb
800 to 1100 hPa/mb
0 to 20 psia
Thermal Effects
Compensated Range °F (°C):
30 to 130 (0 to 55)
%FS/100°F(100°C)max.zero:
±1.0 (±1.8)
%FS/100°F(100°C)max.span:
±1.0 (±1.8)
Media
Non-condensing air or gas compatible with
stainless steel, alumina ceramics, gold, and elastomer sealant.
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