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Dwyer Series
648

Differential Pressure Transmitter
Ranges Down to 0.1" w.c., ±1% Accuracy, High Overpressure Protection

SPECIFICATIONS
Service: Clean, dry air and compatible, non-corrosive gases.
Wetted Materials: Stainless steel, nickel plated brass, glass and silicon.
Accuracy: ±1.0% F.S.O. (includes linearity, hysteresis, and repeatability).
Stability: ±1.0% F.S.O./yr.
Temperature Limits: -20 to 160°F (-29 to 71°C).
Pressure Limits: 10 psig (0.7 kg/cm²).
Compensated Temperature Range: 40 to 125°F (4 to 52°C).
Thermal Effects: Zero: ±0.025% F.S.O./°F, Span: ±0.025% rdg/°F).
Power Requirements: 12-36 VDC.
Output Signal: 4 to 20 mA, 2-wire.
Zero and Span Adjustments: Zero adjustable: ±5%, Span adjustable: ±3%.
Response Time: 250 ms.
Loop Resistance: 600 Ω @ 24 VDC.
Current Consumption: 3.6 mA.
Electrical Connections: Screw terminals.
Process Connections: Barbed for 1/8" or 1/4" I.D. tubing.
Housing: Stainless steel, NEMA 1 case.
Weight: 4.5 oz (128 g).
Agency Approvals: CE.

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