Item retired from storage environment, unused.
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Setra Brand
264 Model
Low Differential Pressure Transducer
Full p/n 2641025WB11T1C
Features
• Industry standard for very low differential pressure
• ±0.25%, ±0.4%, ±1% FS accuracy
• Up to 10 PSI overpressure (range dependent)
• Installation time minimized w/ mounting options
• Reverse wiring protection
• Internal regulation permits use with unregulated DC
power supplies
• Fire retardant case (UL 94 V-0 approved)
• CE & RoHS compliant
• Industry standard for very low differential pressure
• ±0.25%, ±0.4%, ±1% FS accuracy
• Up to 10 PSI overpressure (range dependent)
• Installation time minimized w/ mounting options
• Reverse wiring protection
• Internal regulation permits use with unregulated DC
power supplies
• Fire retardant case (UL 94 V-0 approved)
• CE & RoHS compliant
Applications
• HVAC/R systems
• Room pressurization for critical environments
• Energy management systems
• Variable air volume and fan control (VAV)
• Environmental pollution control
• Lab & fume hood control
Performance data
Accuracy RSS1
(at constant temp)
• HVAC/R systems
• Room pressurization for critical environments
• Energy management systems
• Variable air volume and fan control (VAV)
• Environmental pollution control
• Lab & fume hood control
Performance data
Accuracy RSS1
(at constant temp)
Performance Data
±1.0% FS (standard);
±0.4% FS, ±0.25% FS (optional)
Non-linearity, BFSL ±0.96% FS (standard); ±0.38% FS, ±0.22% FS (optional)
Hysteresis 0.10% FS
±1.0% FS (standard);
±0.4% FS, ±0.25% FS (optional)
Non-linearity, BFSL ±0.96% FS (standard); ±0.38% FS, ±0.22% FS (optional)
Hysteresis 0.10% FS
Thermal effects
Compensated range oF (oC) 0 to +150 (-18 to +65)
Zero shift %FS/100oF(50oC) ±0.033 (±0.06)
Span shift %FS/100oF(50oC) ±0.033 (±0.06)
Max. line pressure 10 PSI
Overpressure Up to 10 PSI (range dependent)
Long term stability 0.5% FS/YR
Compensated range oF (oC) 0 to +150 (-18 to +65)
Zero shift %FS/100oF(50oC) ±0.033 (±0.06)
Span shift %FS/100oF(50oC) ±0.033 (±0.06)
Max. line pressure 10 PSI
Overpressure Up to 10 PSI (range dependent)
Long term stability 0.5% FS/YR
Environmental data
Operating temperature oF (oC)3 0 to +175 (-18 to +79)
Storage temperature oF (oC) -65 to +250 (-54 to +121)
Position effect
Range / Zero offset (%FS/G)
0.1” W.C. 2.3
0.25” W.C. 1
0.5” W.C. 0.5
1.0” W.C. 0.3
2.5” W.C. 0.2
10” W.C. 0.15
Physical description
Case Fire-retardant glass filled polyester (UL 94 V-O Approved)
Electrical Connection Screw terminal strip
Mounting 4 screw holes on removable zinc plated steel base (designed for 2.75” snap track)
Pressure Fittings 3/16” O.D. barbed brass for 1/4” push on tubing
Zero and Span Adjustments Accessible on top of case
Weight (approx.) 10 Ounces
Electrical data (voltage)
Circuit 3-Wire (Com, Out, Exc)
Excitation/output5 9 to 30 VDC / 0 to 5 VDC6,7
Output impedance 100 ohms
Bidirectional output at zero pressure 2.5 VDC6,7
Electrical data (current)
Circuit 2-wire
Output8 4 to 20 mA9,10
External load 0 to 800 ohms
Min. loop supply voltage (VDC) 9 + 0.02 x (resistance of receiver plus line)
Max. loop supply voltage (VDC) 30 + 0.004 x (resistance of receiver plus line)
Bidirectional output at zero pressure 12 mA9,10
Pressure media
Clean air or similar non-conducting gases.
