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Static Pressure Sensors

Dwyer Series 645 Wet/Wet Differential Pressure Transmitter

$ 449.00

SKU: N/A Categories: Differential Pressure, Pressure

Description
Models
Specifications
Literature
Approvals
Drawings
Accessories

Product Description

±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.

Models

Model	Description
645-0	Wet/wet differential pressure transmitter, range 0-1 psid.
645-0-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-1 psid.
645-1	Wet/wet differential pressure transmitter, range 0-2 psid.
645-1-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-2 psid.
645-10	Wet/wet differential pressure transmitter, range ±0.5 psid.
645-10-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±0.5 psid.
645-11	Wet/wet differential pressure transmitter, range ±1 psid.
645-11-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±1 psid.
645-12	Wet/wet differential pressure transmitter, range ±2.5 psid.
645-12-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±2.5 psid.
645-13	Wet/wet differential pressure transmitter, range ±5 psid.
645-13-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±5 psid.
645-14	Wet/wet differential pressure transmitter, range ±10 psid.
645-14-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±10 psid.
645-15	Wet/wet differential pressure transmitter, range ±25 psid.
645-15-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±25 psid.
645-16	Wet/wet differential pressure transmitter, range ±50 psid.
645-16-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range ±50 psid.
645-2	Wet/wet differential pressure transmitter, range 0-5 psid.
645-2-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-5 psid.
645-3	Wet/wet differential pressure transmitter, range 0-10 psid.
645-3-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-10 psid.
645-4	Wet/wet differential pressure transmitter, range 0-25 psid.
645-4-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-25 psid.
645-5	Wet/wet differential pressure transmitter, range 0-50 psid.
645-5-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-50 psid.
645-6	Wet/wet differential pressure transmitter, range 0-100 psid.
645-6-3V	Wet/wet differential pressure transmitter with 3-valve manifold assembly, range 0-100 psid.

Specifications

Service:: Compatible gases or liquids
on both pressure and reference sides.
Wetted Materials:: 17-4 PH stainless steel, 300 Series stainless steel,
fluoroelastomer and silicone O-rings
and bleed screw seals.
Accuracy:: ±0.25% FS (RSS).
Temperature Limits:: Operating: 0 to
175°F (-22 to 80°C); Storage: -65 to
260°F (-54 to 126°C).
Pressure Limits:: (High side) 1 to 5
psi: 20 x FS, 10 to 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 to 150°F (-1 to
65°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 strip
terminal block with conduit enclosure
and .875″ (22 mm) diameter conduit
opening.
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.