Setra Systems

263 Very Low Differential Pressure Transducer

High volume OEM sensor available in various air pressure ranges, 1% accuracy,

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Setra Systems Model 263 pressure transducers sense differential or gauge (static) pressures and convert this pressure difference to a proportional electrical output. The 263 is offered with a high level 5 VDC output.

The 263 Series very low pressure transducers are available in various air pressure ranges. Static accuracy is ±1% full scale in normal ambient temperature environments. The units are temperature compensated to 0.033% FS/°F thermal error over the temperature range of +20°F to 150°F.

The Model 263 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 tensioned sensor also allows up to 5 PSI overpressure (in either direction) with no damage to the unit. In addition, the parts that make up the sensor have thermally matched coefficients, which promote improved temperature performance and excellent long term stability. Also available in circuit board mount verion.

• Low Cost
• Compact Size
• 5 PSI Proof Pressure on all Ranges
• High Level 5 VDC Output
• Fully Protected Against Reverse Wiring
• Internal Regulation Permits Use with Unregulated DC Power Supplies
• 1% Accuracy Improves Variable Air Volume System Performance