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.
- Building energy management
- Environmental pollution control
- Lab and fume hood control
- Variable air volume
Models & Ordering
- Air and non-conductive, non-corrosive gases.
- Wetted Materials:
- 302 SS, glass, nickel, silicone rubber and brass.
- ±0.4% FS* at room temperature. *RSS includes non-linearity, hysteresis and non-repeatability.
- ±1% FS/yr.
- Temperature Limits:
Operating and Compensated: 0 to
185°F (-18 to 85°C);
Storage: -65 to 220°F (-54 to 105°C).
- Pressure Limit:
- 15 psi (100 kPa).
- Thermal Effects:
- (Includes zero and span) <0.028% FS/°F, 0 to 185°F (-18 to 85°C).
- Power Requirements:
- 16 to 32 VDC.
- 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).
- 11.5 oz (330 g).
- Agency Approval:
- 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
|Model Number||Description||Usually Ships*||Price||Code||Order|
|A-489||4" 303 SS straight static pressure tip with flange.||Next Day||$6.90||Order|
|NISTCAL-PT1||NIST traceable calibration certificate for pressure transmitters.NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED.||Less Than 1 Week||$139.00||N||Order|
|A-302F-A||303 SS Static pressure tip with mounting flange, for 3/16" I.D. rubber or plastic tubing. 4" insertion depth, includes mounting screws||Next Day||$9.50||Order|
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