Semiconductor Industry

Pressure Transducers
Model 204/C204
Model 205-2
Model 206/207
Model 209
Model 210
Model 256
Model 280E/C280E
UHP Pressure Transducers
UHP True Flow-Through Model 212FT
UHP Pressure Transducers Model 216
UHP Pressure Transducers Model 217
UHP Flow-Through Model 223
Differential Pressure Transducers
High Accuracy/Diffential Model 204D
Wet/Wet Model 230
High Accuracy/Low Range Model 239
Very Low Diffential Model 264
Very Low Diffential Model 265
Model 267/267MR
Barometric Pressure Transducers
Model 270
Model 276
Model 278
Model 370/470
Measuring Scales
Model LD 330
Model 327

   

Very Low Differential Pressure Transducer

Model 265

Applications
  • Heating, Ventilating and Air Conditioning (HVAC)
  • Energy Management Systems
  • Variable Air Volume and Fan Control (VAV)
  • Environmental Pollution Control
  • Static Duct and Clean Room Pressures
  • Oven Pressurization and Furnace Draft Controls
Benefits
  • 10 PSI Proof Pressure on All Ranges
  • 24 VDC or 24 VAC Excitation
  • High Level 0-5 VDC , 0-10 VDC or 2-Wire 4-20 mA AnalogOutputs Are Compatible with All Energy Management Systems
  • Fully Protected Against Reverse Wiring
  • Internal Regulation Permits Use with Unregulated DC Power Supplies
  • 1% Accuracy Improves Variable Air Volume System Performance
  • Optional Accuracies as High as 0.25% FS
  • Meets CE Conformance Standards
Setra Systems 265 pressure transducers sense differential or gauge (static) pressures and convert this pressure difference to a proportional electrical output. The 265 is offered with a high level 0-5 VDC output or a 4-20 mA output. It is also offered with 0-5 or 0-10 VDC output in the 24 VAC excitation version.
Used in Building Energy Management Systems, these transducers are capable of measuring pressures and flows with the accuracy necessary for proper building pressurization and air flow control.
The 265 Series very low pressure transducers are available for air pressure ranges as low as 0.25 in. WC full scale up to 100 in. WC full scale. Static accuracy is ±1% full scale in normal ambient temperature environments. The units are temperature compensated to less than ±0.033% FS/oF of thermal error over the temperature range of 0oF to +150oF.
The Model 265 utilizes an improved all stainless steel micro-tig welded sensor.
The tensioned stainless steel diaphragm and insulated stainless steel electrode, positioned close to the diaphragm, form a variable capacitor. Positive pressure moves the diaphragm toward the electrode, increasing the capacitance.
A decrease in pressure moves the diaphragm away from the electrode, decreasing the capacitance. The change in capacitance is detected and converted to a linear DC electrical signal by Setra’s unique electronic circuit.
The micro-tig welded tension sensor allows up to 10 PSI overpressure (in either direction) with no damage to the unit. In addition, the sensor parts have thermally matched coefficients, which promote improved temperature performance and excellent long-term stability.




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