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Model 239 Low Differential Pressure Transducer
Brand: Setra Systems, IncSetra’s Model 239 is the “standard” for measuring low differential pressure in the Test & Measurement industry. The 239 delivers a high performance 0.073% Full Scale accuracy over a wide temperature range.
The 239 offers multiple options to meet both simple and demanding application requirements that are not provided on competitive transducers.
Specifications
Brand
Accuracy
- < ± 0.1 % of Full Scale Residual Shift after 5 minutes - Warm-Up Shift
- ± 0.073 % of Full Scale
- ± 0.14 % of Full Scale RSS
Applications
- Cleanrooms
- Exhaust Pressure
- Filters Pressure
- Leak Detection
- Medical Instrumentation
- Part Integrity Testing
Approvals & Certifications
- CE
- RoHS
Cable Length
- 2 to 25 feet (0.6 to 7.62 metres)
Compensated Temperature
- -1° to 65° C (30° to 150° F)
Constant Acceleration
- < 0.0002 psi/g - Acceleration Response
- 10 G, Max.
Electrical Connectors
- 2 Foot Multiconductor Cable
- 2-Wire - Circuit
- 4-Wire - Circuit
Enclosure, Body Material
- 303 Stainless Steel
Excitation Voltage
- ± 15 Vdc
- ± 24 Vdc
- 22-30 Vdc (Reverse Excitation Protected)
Frequency
- 2000 Hz Nominal
Hysteresis
- 0.10 % of Full Scale
Load
- 0 to 1,000 ohms - External Load
Materials of Construction
- Aluminum - Anodized
- Stainless Steel - Tag
Media
- Clean Dry Air
- Gas
Non-Linearity
- ± 0.10 % of Full Scale, BFSL
Non-Repeatability
- 0.02 % of Full Scale
NPT Connection
- 1/8”-27 Female NPT
- 1/8” NPT Female
O-Ring Material
- Buna-N
- Viton
Operating Pressure
- psig: 250 (kPa: 1,724, bar: 17.24) - Max.
Operating Temperature
- -18° to 80° C (0° to 175° F)
Output
- ± 2.5 Vdc
- 0-10 Vdc
- 0-20 mA
Output Impedence
- < 10 ohms
Output Noise
- < 10 µA RMS at 0 to 10,000 Hz
- < 200 µV RMS at 0 to 10,000 Hz
Power Supply Effect
- < 0.003 mA/V
Pressure Range
- bar: 0 to 0.69
- Inches WC: 0 to 30
- kPa: 0 to 68.9
- psi: 0 to 10
Proof Pressure
- Inches WC: 0 to 150
- psi: 0 to 100 (kPa: 0 to 690, bar: 0 to 6.9)
Response Time
- < 10 milliseconds
Shock
- 50 G Operating
Span & Zero Effect
- < ± 0.9 % of Full Scale/50° C (100° F) - Span & Zero Shift
- < 1 % of Full Scale / 50° C (100° F) - Span & Zero Shift
Storage Temperature
- -55° to 120° C (-65° to 250° F)
Supply Voltage
- 17 Vdc + 0.02 x (Resistance of Receiver Plus Line) - Min.
- 42 Vdc + 0.004 x (Resistance of Receiver Plus Line) - Max.
Vibration
- 2 G at 5 to 500 Hz