645-13-3V | Wet/wet differential pressure transmitter with 3-valve manifold assembly | range ±5 psid. | Dwyer
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645-13-3V | Wet/wet differential pressure transmitter with 3-valve manifold assembly | range ±5 psid. | Dwyer

Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±5 psid.

Brand: DwyerSKU: 645-13-3V
Dwyer | 645-13-3V
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Overview Details for 645-13-3V

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Wet/wet differential pressure transmitter with 3-valve manifold assembly | range ±5 psid.

Series 645 Wet/Wet Differential Pressure Transmitter

±0.25% Accuracy, Quick Response, 2-Wire Design

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.

Calibration Option available under Accessories.

California Residents:  Click Here for Proposition 65 WARNING.

Product Applications

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

Specifications

Series
645 Wet/Wet Differential Pressure Transmitter
Category/Type
Pressure
Type
Differential Pressure
Series
645 Wet/Wet Differential Pressure Transmitter
Service
Compatible gases or liquidson both pressure and reference sides.
Wetted Materials
17-4 PH stainless steel; 300 Series stainless steel;fluoroelastomer and silicone O-ringsand bleed screw seals.
Accuracy
±0.25% FS (RSS).
Temperature Limits
Operating: 0 to175°F (-22 to 80°C); Storage: -65 to260°F (-54 to 126°C).
Pressure Limits
(High side) 1 to 5psi: 20 x FS; 10 to 25 psi: 10 x FS; 50psi: 5 x FS; 100 psi: 2.5 x FS; (lowside) 2.5 x FS.
Thermal Effects
(includes zero andspan) ±0.02% FS/°F; 30 to 150°F (-1 to65°C).
Power Requirements
11 to 30 VDC.
Output Signal
4 to 20 mA; 2-wire.
Zero and Span Adjustments
Adjustable; ±1 mA; non-interactive.
Response Time
30 to 50 ms.
Loop Resistance
0 to 1000Ω.
Electrical Connection
Barrier stripterminal block with conduit enclosureand .875" (22 mm) diameter conduitopening.
Process Connection
1/4"-18 female NPT.
Housing
Stainless steel/aluminum;NEMA 4X (IP56).
Weight
14.4 oz (0.4 kg).
Agency Approvals
CE.
3-Valve Manifold Assembly
Manifold
Brass.
Valve Type
90° on/off.
Process Connection
1/4"-18 female NPT.

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