677B-03

677B-03 is a series 677B differential pressure transmitter which is designed to measure pressures as low as 0.1in 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 15PSID 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. Typical applications include building energy management, lab and fume hood control, environmental pollution control and variable air volume.

• Range of 0-.5" W.C
• High accuracy at low-pressure ranges provides exceptional measurement for insuring tight-control
• Use with unregulated DC power permits easy access to electrical supply reducing power conditioning
• NEMA 4 housing enables a range of use outdoor or indoor where water is present
• Operating and compensated temperature limits is 0 to 185°F (-18 to 85°C)
• 16 to 32VDC power requirement
• 4 to 20mA DC, 2-wire output
• Internally accessible potentiometers, noninteractive
• Approximately 10ms response time, 3/16˝ OD barbed brass pressure fitting process connection
• NEMA 4 (IP65) enclosure rating