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Dwyer

655A 316 Wet/Wet Differential Pressure Transmitter

Designed for high static/low DP application

This product is no longer available. Contact us at 800-567-8686 for alternative solutions.

Have questions? We're here to help!
Have questions? We're here to help!

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 in W.C.

Every 655A Series 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. Each unit includes a 6-point NIST certificate of calibration which demonstrates the unit's high level of performance.

The 655A Series transmitter pressure ports that are all welded 316 SS with an O-Ring free design making it ideal for high cyclical applications, capillary filled systems, or applications where a guaranteed leak free system is needed.

• 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

 

ServiceCompatible gasses or liquids
Wetted Materials316L SST
Accuracy± 0.25% BFSL, RSS (combined effect of non-linearity, hysteresis, and repeatability)
Stability≤ ± 0.25% FSO/yr
Temperature Limits-20°F - 200°F (-29°C - 93°C)
Compensated Temperature Limits0°F - 170°F (-17.8°C - 76.7°C)
Pressure Limits1000 PSI (68.95 Bar) continuous;
3000 PSI (206.8 Bar) burst
Thermal Effects≤ ± 1.5% F.S. over comp. temperature range
Power Requirements8 VDC - 38 VDC
Output Signal4 - 20 mA
Static Pressure EffectsOn Zero: ≤ ± 0.25% FSO per 1000 PSI
On Span: ≤ ± 0.5% of reading per 1000 PSI
Loop Resistance1500 Ω
Electrical ConnectionsCable exit with 24 in cable; optional 6-pin connector
Process Connections1/4 in NPT female
Enclosure RatingDesigned to meet NEMA 4X (IP66)
Mounting OrientationMount in vertical position: zero shifts up to 1 in H2O depending on orientation
Response Time< 10 ms
Weight18 oz (510 g)
Agency ApprovalCE

• Pump differential pressure
• Critical process monitoring
• High accuracy/low differential pressure OEM applications

  • Thumbnail of document Manual - 655A 316 Wet/Wet Differential Pressure Transmitter
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    Manual - 655A 316 Wet/Wet Differential Pressure Transmitter

    Download
  • Thumbnail of document Data Sheet - 655A 316 Wet/Wet Differential Pressure Transmitter
    Download

    Data Sheet - 655A 316 Wet/Wet Differential Pressure Transmitter

    Download

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