Description

Series 655A 316 Wet/Wet Differential Pressure Transmitter, Ranges Down to 3″ w.c.,

6-point NIST Certificate Included

 

DWYER Series 655A Differential Pressure Transmitters are designed for high static/low DP applications designed especially for the End Users and OEM’s where extreme overpressure and high performance of 0.25% accuracy and stability are required at ranges down to 3″ w.c. Every DWYER Series 655A Differential Pressure Transmitter is built using advanced manufacturing techniques to ensure symmetry between the HI and LO ports. Symmetry, along with automated welding procedures give these differential pressure transmitters excellent performance and reliability over time at high elevated line pressure.

 

Features

• Extreme overpressure and stability at low ranges provides durable device for OEM and end-user applications
• High-accuracy device for low differential pressure designs requiring more precise measurements in support of application
• NIST certificate available to demonstrate high-level of performance

 

Specifications

• Service: Compatible gasses or liquids.
• Wetted Materials: 316L SST.
• Accuracy: ±0.25% BFSL, RSS (combined effect of non-linearity, hysteresis, and repeatability).
• Stability: ≤ ±0.25% FSO/yr.
• Temperature Limits: -20 to 200°F (-29 to 93°C).
• Compensated Temperature Limits: 0 to 170°F (-17.8 to 76.7°C).
• Pressure Limits: 1000 psi (68.95 bar) continuous; 3000 psi (206.8 bar) burst.
• Thermal Effects: ≤ ±1.5% F.S. over comp. temperature range.
• Power Requirements: 8 to 38 VDC.
• Output Signal: 4 to 20 mA.
• Static Pressure Effects: On Zero: ≤ ±0.25% FSO per 1000 psi; On Span: ≤ ±0.5% of reading per 1000 psi.
• Loop Resistance: 1500 Ω.
• Electrical Connections: Cable exit with 24″ cable; optional 6-pin connector.
• Process Connections: 1/4″ NPT female.
• Enclosure Rating: Designed to meet NEMA 4X (IP66).
• Mounting Orientation: Mount in vertical position: zero shifts up to 1″ ±H2O depending on orientation.
• Response Time: < 10 ms.
• Weight: 18 oz (510 g).
• Agency Approval: CE.

 

Models & Ordering

 

Cable Exit with 24″ Cable

Model	Description
655A-00-C	Wet/wet differential pressure transmitter, range 0-3″ w.c.
655A-01-C	Wet/wet differential pressure transmitter, range 0-5″ w.c.
655A-02-C	Wet/wet differential pressure transmitter, range 0-8″ w.c.
655A-03-C	Wet/wet differential pressure transmitter, range 0-10″ w.c.
655A-04-C	Wet/wet differential pressure transmitter, range 0-15″ w.c.
655A-05-C	Wet/wet differential pressure transmitter, range 0-20″ w.c.
655A-06-C	Wet/wet differential pressure transmitter, range 0-1 psid.
655A-07-C	Wet/wet differential pressure transmitter, range 0-2 psid.

 

6-pin Connector

Model	Description
655A-00-P	Wet/wet differential pressure transmitter, range 0-3″ w.c.
655A-01-P	Wet/wet differential pressure transmitter, range 0-5″ w.c.
655A-02-P	Wet/wet differential pressure transmitter, range 0-8″ w.c.
655A-03-P	Wet/wet differential pressure transmitter, range 0-10″ w.c.
655A-04-P	Wet/wet differential pressure transmitter, range 0-15″ w.c.
655A-05-P	Wet/wet differential pressure transmitter, range 0-20″ w.c.
655A-06-P	Wet/wet differential pressure transmitter, range 0-1 psid.
655A-07-P	Wet/wet differential pressure transmitter, range 0-2 psid.