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Model 278 Pressure Transducer
Brand: Setra Systems, IncSetra’s Model 278 is the ideal solution for measuring barometric pressure for remote environmental applications.
The 278 is designed using the SETRACERAM ceramic sensor, enabling it to meet stringent accuracy requirements over wide operating temperatures in remote applications. The small footprint and removable terminal block on the 278 makes installation fast and easy.
The 278 is ideal for solar powered applications because of its low power consumption and sleep mode feature. Under normal operation, this feature minimizes current draw when readings are not being taken.
Features- Long-term stability: 0.1 hPa/mB Per Year
- Sleep Mode for Instant Startup
- Removable Terminal Strip Module for Easy Wiring
- Footprint Configured for Easy Drop-In Replacement
- Calibration NIST Traceable
Specifications
Brand
Accuracy
- ± 0.3 Mbar at 20° C (68° F)
- ± 0.5 Mbar at 20° C (68° F)
- ± 0.6 Mbar at 0° to 40° C (32° to 104° F)
- ± 0.6 Mbar at 20° C (68° F)
- ± 1 Mbar at -20° to 50° C (-4° to 122° F)
- ± 1.0 Mbar at 0° to 40° C (32° to 104° F)
- ± 1.2 Mbar at 0° to 40° C (32° to 104° F)
- ± 1.5 Mbar at -20° to 50° C (-4° to 122° F)
- ± 1.5 Mbar at -40° to 60° C (-40° to 140° F)
- ± 2.0 Mbar at -20° to 50° C (-4° to 122° F)
- ± 2.0 Mbar at -40° to 60° C (-40° to 140° F)
- ± 2.5 Mbar at -40° to 60° C (-40° to 140° F)
Applications
- Agricultural Equipment
- AWOS / ASOS Systems
- Barometric Pressure Measurement
- Data Buoys
- Ship Building
- Weather Stations
Approvals & Certifications
- CE
- RoHS
Burst Pressure
- hPa: 2,000
Consumption
- 1 µA (Sleep Mode)
- 3 mA Nominal (Operating Mode)
Dimensions
- 3.6" x 2.4" x 1.0" (91 x 61 x 25 mm)
Electrical Connectors
- 3-Wire (Circuit)
- 4-Wire (Circuit)
- 5-Pin Terminal Block
Enclosure, Body Material
- Polyester
- Stainless Steel
Excitation Voltage
- 9.5-28 Vdc
Hysteresis
- ± 0.03 Mbar
- ± 0.05 Mbar
- ± 0.06 Mbar
Media
- Air
- Gas
NACE & NIST
- NIST
Non-Linearity
- ± 0.04 Mbar
- ± 0.25 Mbar
- ± 0.5 Mbar
Non-Repeatability
- ± 0.02 Mbar
- ± 0.03 Mbar
- ± 0.04 Mbar
Operating Temperature
- -40° to 60° C (-40° to 140° F)
Output
- 0-2.5 Vdc / 9.5-28 Vdc
- 0-5 Vdc / 9.5 to 28 Vdc
Output Impedence
- < 10 ohms
Output Noise
- < 50 µV
Pressure Range
- inH₂O: 200.7 to 441.6
- mbar: 500 to 1,100
- mmHg: 375 to 825
Pressure Type
- Absolute
- Barometric
Proof Pressure
- hPa: 1,500
Resolution
- 0.01 Mbar
Response Time
- < 100 ms
Stability
- 0.1 hPa/mbar Per Year
Storage Temperature
- -60° to 120° C (-76° to 248° F)
Tube Connection
- 1/8" I.D. Tube
Update Time
- < 1 second from Shut-Mode (Warm-Up < 0.1 Mbar, max.L