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Documents: 677B-13

Instruction Manual Series 677B Catalog Page More Info

677B-13 | Differential pressure transmitter | range -.25-0-.25" w.c. | Dwyer

Differential pressure transmitter, range -.25-0-.25" w.c.

Brand: DwyerSKU: 677B-13

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Differential pressure transmitter | range -.25-0-.25" w.c.

Series 677B Differential Pressure Transmitter

NEMA 4 Enclosure with Integral Mounting Bracket

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.

Calibration Option available under Accessories.

California Residents: Click Here for Proposition 65 WARNING.

Product Applications

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

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

Specifications

Series: 677B Differential Pressure Transmitter
Category/Type: Pressure
Type: Differential Pressure
Series: 677B Differential Pressure Transmitter
Service: Air and non-conductive; non-corrosive gases.
Wetted Materials: 302 SS; glass; nickel; silicone rubber and brass.
Accuracy: ±0.4% FS* at roomtemperature.*RSS includes non-linearity; hysteresisand non-repeatability.
Stability: ±1% FS/yr.
Temperature Limits: >Operating and Compensated: 0 to185°F (-18 to 85°C);Storage: -65 to 220°F (-54 to105°C).
Pressure Limit: 15 psi (100 kPa).
Thermal Effects: (Includes zero andspan) <0.028% FS/°F; 0 to 185°F (-18to 85°C).
Power Requirements: 16 to 32 VDC.
Output: 4 to 20 mA DC; 2-wire.
Zero and Span Adjustments: Internally accessible potentiometers;noninteractive.
Response Time: Approximately 10 ms.
Max. Loop Resistance: DC: 0 to 800 Ohms.
Process Connection: 3/16" OD barbed brass pressure fitting.
Enclosure Rating: NEMA 4 (IP65).
Weight: 11.5 oz (330 g).
Agency Approval: CE.