800-257-3872 159 Swanson Rd., Boxborough, MA 01719/Telephone: 978-263-1400/Fax: 978-264-0292 U.S. Patent nos. 4093915; 4358814; 4434203; 6019002; 6014800. Other Patents Pending. Model 264 Very Low Differential Pressure Transducer Unidirectional Ranges: 0 - 0.1 to 0 - 100 in. W.C. Bidirectional Ranges: 0 - ±0.5 to 0 - ±50 in. W.C. Air or Non-Conducting Gas NOTE: Setra quality standards are based on ANSI-Z540-1. The calibration of this product is NIST traceable. Visit Setra Online: http://www.setra.com The Model 264 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 allows up to 10 PSI overpressure (range dependent) 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. Applications œ Heating, Ventilating and Air Conditioning (HVAC) œ Energy Management Systems œ Variable Air Volume and Fan Control (VAV) œ Environmental Pollution Control œ Lab and Fume Hood Control œ Oven Pressurization and Furnace Draft Controls Features ¡ Up to 10 PSI Overpressure (Range Dependent) ¡ Installation Time Minimized with Snap Track Mounting and Easy- To- Access Pressure Ports and Electrical Connections ¡ 0 to 5 VDC or 2-wire 4 to 20 mA Analog Outputs Are Compatible with Energy Management Systems ¡ Reverse Wiring Protection ¡ Internal Regulation Permits Use with Unregulated DC Power Supplies ¡ Fire Retardent Case (UL 94 V-0 Approved) ¡ Meets CE Conformance Standards Setra Systems 264 pressure transducers sense differential or gauge (static) pres sure and convert this pressure difference to a proportional electrical output for either unidirectional or bidirectional pressure ranges. The 264 Series is offered with a high level analog 0 to 5 VDC or 4 to 20 mA output. Used in Building Energy Management Systems, these transducers are capable of measuring pressures and fl ows with the accuracy necessary for proper building pressurization and air fl ow control. The 264 Series transducers are available for air pressure ranges as low as 0.1 in. W.C. full scale to 100 in. W.C. full scale. Static standard accuracy is ±1.0% full scale in normal ambient temperature environments, but higher accuracies are available. The units are temperature compensated to 0.033% FS/oF thermal error over the temperature range of 0oF to +150oF. 3-year Unconditional Warranty HIGH OVERPRESSURE CAPABILITY Up to10 PSI GUARANTEED 3 DAY SHIPMENT FOR STANDARD PARTS (less than 10 pieces) When it comes to a product to rely on - choose the Model 264. When it comes to a company to trust - choose Setra.

Code T1 Electrical Termination Dimensions 2.750 69.85 1.662 42.21 1.187 30.15 4.562 115.87 5.062 128.57 0.078 1.98 0.312 7.92 0.385 9.78 #6 SCREW WIRE CLAMP 3 PLACES PRESSURE PORTS 0.594 15.08 1.811 45.99 1.624 41.25 1.19 30.15 1.19 30.15 3.00 76.20 4.56 115.87 5.51 139.83 1.66 42.21 0.49 12.55 1.91 48.51 1.50 38.10 0.99 25.17 PRESSURE PORTS IN MM Performance Data Standard Optional Accuracy* RSS(at constant temp) ±1.0% FS ±0.4% FS ±0.25% FS Non-Linearity, BFSL ±0.96% FS ±0.38% FS ±0.22% FS Hysteresis 0.10% FS 0.10% FS 0.10% FS Non-Repeatability 0.05% FS 0.05% FS 0.05%FS Thermal Effects** Compensated...