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Dwyer Series
677

Differential Pressure Transmitter
Ranges Down to 0.1" w.c., Low Cost, ±0.4% Accuracy, 4 to 20 mA Output

SPECIFICATIONS
Service: Air and nonconductive, noncorrosive gases.
Wetted Materials: Brass.
Accuracy: ±0.4% full scale (RSS).
Temperature Limits: 0 to 175°F (-18 to 79°C).
Pressure Limits: 5 times full scale or 10 psi, (whichever is greater).
Thermal Effects: <±0.033% F.S. over 40 to 100°F range.
Power Requirements: 9 to 30 VDC.
Output Signal: 4 to 20 mA DC, 2-wire.
Span and Zero Adjustments: Externally accessible potentiometers, noninteractive, ±10% F.S. adjustment.
Response Time: 250 msec maximum.
Loop Resistance: 0 to 800 Ω (calibrated using 250 Ω load @ 24 VDC).
Electrical Connections: Three screw terminals.
Process Connection: 3/16" O.D. barbed brass pressure fitting for 1/4" push-on tubing.
Housing: Fire retardant glass-filled polyester.
Weight: 10 oz (283 g).
Agency Approvals: CE.

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