Starting at $455.15USD
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Dwyer

677B Differential Pressure Transmitter

Designed to measure pressures as low as 0.1 in w.c. with ±0.4% accuracy, features 15 psid overpressure

Starting at
$455.15USD
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677 B Differential Pressure Transmitter 02466

Series 677B Differential Pressure Transmitters are designed to measure pressures as low as 0.1 in W.C. with ± 0.4% accuracy. Use Series 677B for building energy management systems, environmental pollution control, oven pressurization, lab and fume hood control, HVAC and VAV applications. The transmitter features 15 psid overpressure, reverse polarity protection and EMI/RFI protection. Internal regulation permits use with unregulated DC power supplies. The NEMA 4 housing allows for versatile mounting locations and integral mounting tabs simplify installation.

• NEMA 4 housing enables a range of use outdoor or indoor where water is present
• High accuracy at low pressure ranges provides exceptional measurement for insuring tight-control and minimizing costly out of specification conditions
• Use with unregulated DC power permits easy access to electrical supply reducing costly power conditioning and wiring
 

*RSS includes non-linearity, hysteresis and non-repeatability
ServiceAir and non-conductive, non-corrosive gases
Wetted Materials302 SS, glass, nickel, silicone rubber and brass
Accuracy± 0.4% FS* at room temperature.
Stability± 1% FS/yr
Temperature LimitsOperating and Compensated: 0°F - 185°F (-18°C - 85°C);
Storage: -65°F - 220°F (-54°C - 105°C)
Pressure Limit15 PSI (100 kPa)
Thermal EffectsIncludes zero and span) < 0.028% FS/°F, 0°F - 185°F (-18°C - 85°C)
Power Requirements16 VDC - 32 VDC
Output4 - 20 mA DC, 2-wire
Zero and Span AdjustmentsInternally accessible potentiometers, noninteractive
Response TimeApproximately 10 ms
Max. Loop ResistanceDC: 0 Ω - 800 Ω
Process Connection3/16 in OD barbed brass pressure fitting
Enclosure RatingNEMA 4 (IP65)
Weight11.5 oz (330 g)
Agency ApprovalCE

• Building energy management
• Environmental pollution control
• Lab and fume hood control
• Variable air volume

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