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Model 256 Gauge Pressure Transducer
Brand: Setra Systems, IncThe Model 256 is one of the most rugged and reliable sensors available. Specifically designed for NEMA4/IP65 service the 256 is packaged in a die-cast aluminum enclosure and includes Setra’s robust capacitive design, making it resistant to environmental effects such as shock, vibration, temperature and EMI/RFI.
Available in a wide variety of gauge pressure ranges, the 256 features adjustable potentiometers for zero and span settings. Only 3.6” high x 4.0” wide, the Model 256 is designed for compact installations.
The removable cover provides easy access to the internal terminal strip for wiring. Installation is quick and easy with 1/2" internal threaded conduit ports for electrical termination.
Features- Low cost
- High accuracy
- Wide operating temperature range
- Compatible with a wide range of gases or liquids
- Corrosive resistant all stainless steel wetted parts
- Choice of voltage or current output
- Operates on low cost unregulated power supply
Specifications
Brand
Accuracy
- ± 0.13 % of Full Scale for (25 psi & Higher Range)
- ± 0.25 % of Full Scale for (Less than 25 psi Range)
- 0.1 % of Full Scale - Warm-Up Shift
Applications
- Agricultural Irrigation Systems
- Chemical Processing
- Grain Processing
- Industrial Pressure Monitoring
- Natural Gas Pipeline Monitoring
- Process Control
Approvals & Certifications
- CE
Compensated Temperature
- -20° to 80° C (-4° to 176° F)
Consumption
- < 0.15 W (Approximately 5 mA at 24 Vdc)
Electrical Connectors
- 2-Wire - Circuit
- 3-Wire - Circuit
- Two 1/2” Internal Conduit Ports
Enclosure, Body Material
- Stainless Steel
- Valox
Environmental Protection
- IP65
- IP66
- NEMA 4
- Weatherproof
Excitation Voltage
- 9-30 Vdc
Hysteresis
- 0.08 % of Full Scale for (25 psi & Higher Range)
- 0.10 % of Full Scale for (Less than 25 psi Range)
Load
- 0 to 800 ohms - External Load
Media
- Liquids & Gases Compatible with 17-4 PH Stainless Steel
Non-Linearity
- ± 0.10 % of Full Scale, BFSL for (25 psi & Higher Range)
- ± 0.22 % of Full Scale, BFSL for (Less than 25 psi Range)
Non-Repeatability
- 0.02 % of Full Scale for (25 psi & Higher Range)
- 0.05 % of Full Scale for (Less than 25 psi Range)
NPT Connection
- 1/2” NPT Male
- 1/4” NPT Male
- 1/8” NPT Male
- 1-2 / 5” NPT Female
Operating Temperature
- -40° to 85° C (-40° to 185° F)
Output
- 0.1 to 5.1 Vdc for Ranges ≥ 25 psi
- 4-20 mA
Output Impedence
- 100 ohms
Pressure Range
- bar: 0 to 689.5
- kPa: 0 to 68,950
- psi: 0 to 10,000
Pressure Type
- Gauge
Shock
- 200 G
Span & Zero Effect
- ± 0.9 % of Full Scale/100° C (212° F) for (25 psi & Higher Range)
- ± 1.4 % of Full Scale/100° C (212° F) for (Less than 25 psi Range)
- ± 1.5 % of Full Scale/38° C (100° F) for (Less than 25 psi Range)
- ± 1.8 % of Full Scale/100° C (212° F) for (Less than 25 psi Range)
- 1 % of Full Scale/38° C (100° F)
- 1.4 % of Full Scale/100° C (212° F) for (25 psi & Higher Range)
- 1.5 % of Full Scale/38° C (100° F) for (25 psi & Higher Range)
Stability
- 0.5 % of Full Scale Per Year - Long Term Stability
Storage Temperature
- -40° to 85° C (-40° to 185° F)
Supply Voltage
- 30 Vdc + 0.004 x (Resistance of Receiver Plus Line) - Max.
- 9 Vdc + 0.02 x (Resistance of Receiver Plus Line) - Min.
Vibration
- 20 G