800-257-3872 159 Swanson Rd., Boxborough, MA/Telephone: 978-263-1400/Fax: 978-264-0292 U.S. Patent nos. 4093915 Model 239/C239 High Accuracy/Low Range Pressure Differential Pressure: 0 - ±0.25 in. W.C. to 0 -10 psid Pressure Media Air or Other Gases Applications œ HVAC Control œ Leak Detection œ Environmental Testing œ Medical Instrumentation œ Energy Management œ Clean Rooms Features ¡ ± 0.14% FS Accuracy ¡ Fast Warm-up ¡ Low Thermal Effects ¡ Fast Response, <10 milliseconds ¡ Withstands High Overpressure ¡ Meets CE Conformance Standards Visit Setra Online: http://www.setra.com Setra’s unique electronic circuit. The Model 239 provides a high level voltage output. The C239 provides a 4-20 mA current output. High positive overpressure protection is achieved by the sensor electrode acting as a stop for the diaphragm. The high level output signals, excellent long term stability and fast dynamic response make these transducers ideal for a wide range of industrial, laboratory and aerospace applications. Pressure Range Proof Pressure Unidirectional Positive Negative Pressure 0 to 0.5 in. WC 5 PSI 2.5 in. WC 0 to 1 in. WC 7 PSI 5 in. WC 0 to 2.5 in. WC 10 PSI 12.5 in. WC 0 to 5 in. WC 20 PSI 25 in. WC 0 to 15 in. WC 50 PSI 75 in. WC 0 to 30 in. WC 50 PSI 150 in. WC 0 to 5 PSID 75 PSI 25 PSI 0 to 10 PSID 100 PSI 50 PSI Bidirectional Pressure 0 to ± 0.25 in. WC 5 PSI 2.5 in. WC 0 to ± 0.5 in. WC 7 PSI 5 in. WC 0 to ± 1 in. WC 10 PSI 12.5 in. WC 0 to ± 2.5 in. WC 20 PSI 25 in. WC 0 to ± 7.5 in. WC 50 PSI 75 in. WC 0 to ± 15 in. WC 50 PSI 150 in. WC 0 to ± 2.5 PSID 75 PSI 25 PSI 0 to ± 5 PSID 100 PSI 50 PSI Full Scale Ranges Setra’s Model 239 series of pressure transducers are specifically designed for very low pressure applications that require high accuracy. Setra’s variable capacitance sensor is designed to be simple and reliable. A stainless steel diaphragm and an insulated electrode form a variable capacitor. As pressure increases or decreases, the capacitance changes. This change in capacitance is detected and converted to a linear D.C. electric signal by NOTE: Setra adheres to strict quality standards including ISO 9001 and ANSI-Z540-1. The calibration of this product is NIST traceable. When it comes to a product to rely on - choose the Model 239. When it comes to a company to trustchoose Setra. Certified ISO 9001

Performance Data Accuracy RSS at constant temp.* ±0.14% FS Non-Linearity, BFSL ±0.10% FS Hysteresis 0.10% FS Non-Repeatability 0.02% FS Thermal Effects** Compensated Range °F(°C) +30 to +150 (-1 to +65) Zero shift %FS/100°F(50°C) <±1 (<±0.9) Span Shift %FS/100°F(50°C) <±1 (<±0.9) Acceleration Response <0.0002 psi/g Natural Frequency 2000 Hz nominal Settling Time <100 milliseconds Warm-up Shift < ±0.1% FS total Operable Line Pressure Vacuum to maximum 250 psig Line Pressure Effect 2%/100 PSI Proof Pressure Listed on front page Internal Volumes Positive port 0.03 cu. in. Reference port 0.1 cu....