Starting at $939.40USD
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Dwyer

645 Wet/Wet Differential Pressure Transmitter

Quick response capacitance sensor delivers a 4 - 20 mA output signal and ± 0.25% accuracy

Starting at
$939.40USD
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645 Wet Wet Differential Pressure Transmitter 02449

Series 645 Wet/Wet Differential Pressure Transmitters are designed for use with compatible gases and liquids which can be applied to both the pressure and reference ports. Quick response capacitance sensor delivers a 4 to 20 mA output signal proportional to differential pressure with ±.25% accuracy. The Series 645 transmitters are ideal for process control, filter condition monitoring, refrigeration equipment, pump speed control, HVAC equipment, and liquid level measurement. For ease of installation and maintenance, order optional 3-valve manifold assembly. Bleed ports allow for total elimination of air in the line and pressure cavities.

• Versatile, high-accuracy device for liquid or gas supports designs requiring more precise measurements in support of application
• Optional 3-way valve manifold supports simplifying installation or removal of transmitter without interrupting process
ServiceCompatible gases or liquids on both pressure and reference sides
Wetted MAterials17-4 PH stainless steel, 300 Series stainless steel, fluoroelastomer and silicone O-rings and bleed screw seals
Accuracy± 0.25% FS (RSS)
Temperature LimitsOperating: 0°F - 175°F (-22°C - 80°C);
Storage: -65°F - 260°F (-54°C - 126°C)
Pressure Limits(High Side) 1 PSI - 5 PSI: 20 x FS, 10 PSI - 25 PSI: 10 x FS, 50 PSI: 5 x FS, 100 PSI: 2.5 x FS;
(Low Side) 2.5 x FS
Thermal Effects(Includes zero and span) ± 0.02% FS/°F, 30°F - 150°F (-1°C - 65°C)
Power Requirements11 VDC - 30 VDC
Output Signal4 - 20 mA, 2-wire
Zero and Span AdjustmentsAdjustable, ± 1 mA, non-interactive
Response Time30 ms - 50 ms
Loop Resistance0 Ω - 1000 Ω
Electrical ConnectionBarrier strip terminal block with conduit enclosure and 0.875 in (22 mm) diameter conduit opening
Process Connection1/4 in - 18 female NPT
HousingStainless steel/aluminum, NEMA 4X (IP56)
Weight14.4 oz (0.4 kg)
Agency ApprovalsCE
3-Valve Manifold Assembly
Manifold:Brass.
Valve Type:90° on/off.
Process Connection:1/4"-18 female NPT.

• Process control
• Filter monitoring
• Refrigeration equipment
• Pump speed control
• HVAC equipment
• Liquid level measurement

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