Measure and Control building/room pressure, air flow, duct pressure or filter drop with the Series 674 Differential Pressure Transmitter. These versatile transmitters provide up to six field selectable direct or compound pressure ranges.

Additional features include 10 psid overpressure without zero shift, non-interactive zero and span adjustment, temperature compensation, short circuit and reverse polarity protection.

SPECIFICATIONS
Service: Clean dry air or any inert gas.
Wetted Materials: Brass hose barbs, silicone.
Accuracy: ±1% FS (includes non-linearity, hysteresis and non-repeatability).
Stability: Less than 1% FS/year.
Temperature Limits: 0 to 175°F (-18 to 80°C), 10 to 90% RH, non-condensing.
Pressure Limits: 10 psid (0.69 bar).
Compensated Temperature Range: 25 to 150°F (-4 to 65°C).
Thermal Errors: ±0.0125%/°F (0.02%/°C).
Supply Voltage: 12-40 VDC.
Output: 4-20mA, 2-wire.
Zero and Span Adjustment: ±15%, non-interactive.
Response Time: 60 msec.
Loop Resistance: 1600 O @ 40 VDC.
Electrical Connections: Unpluggable screw terminal block.
Pressure Connections: Barbed for 1/4" O.D. 5/32" I.D. tubing.
Enclosure: Models 674-4XX: Cold-Rolled Steel, NEMA-4 (IP56); Models 674-1XX: Panel Mount.
Weight: Models 674-4XX: 1.0 lb (.45 kg); Models 674-1XX: 0.5 lb (.25 kg).
Agency Approvals: CE.