Low cost Series 646 Pressure Transducer is designed for use with air and inert gases and can accurately measure differential pressure down to ±0.5" w.c. The transducer utilizes a fast response capacitive sensor and is temperature compensated for stable output. Units provide an amplified voltage output signal ideal for VAV systems, filter monitoring, HVAC fan control, building pressurization and leak detection systems.

SPECIFICATIONS
Service: Compatible gas and air.
Wetted Materials: Graphite filled nylon housing, 96% alumina ceramic sensor, silicone seal.
Accuracy: Non-linearity: ±0.5% FS max. Hysteresis and Repeatability: ±0.05% FS max.
Temperature Limits: Operating: 14 to 140°F (-10 to 60°C).
Pressure Limits: Line Pressure: 1 psi. Overload Pressure: High side: 5x rated pressure, Low side: 3x rated pressure.
Compensated Temperature Range: 50 to 104°F (10 to 40°C).
Thermal Effects: Zero Temp Effects: ±1.5% FS (>2.0" H2O); ±3.0% FS (=2.0" H2O). Span Temp Effects: ±1.5% FS (>2.0" H2O); ±4.0% FS (=2.0" H2O).
Power Requirements: 4.75 to 8 VDC.
Output Signal: 0.25 to 4.0 ±0.08 VDC @ 5.0 V supply (0.5 to 4.25 ±0.12 VDC for ±0.5" range).
Response Time: 15 msec @ 63% FS step response change.
Output Impedance: <100 O; short circuit protected.
Electrical Connection: Three color-coded leads, 24 AWG, 12" length.
Process Connection: 1/8" or 3/16" I.D. tubing.
Weight: 2.5 oz (0.07 kg).