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Wet/Wet DIfferential Pressure Transmitter
¸ðµ¨¸í  Series 645
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PHYSICAL DATA
Service: Compatible gases or liquids on both pressure and reference sides.
Output: 4 to 20 mA, 2-wire.
Supply Voltage: 11 to 30 VDC.
Loop Resistance: 0 to 1000¥Ø.
Zero and Span: Adjustable, ¡¾1 mA, non-interactive.
Max Overload Pressure: (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.
Temperature Limits: Operating: 0 to 175¡ÆF (-22 to 80¡ÆC), Storage: -65 to 260¡Æ
F (-54 to 126¡ÆC).
Accuracy: ¡¾ 0.25% FS (RSS).
Response Time: 30 to 50 msec.
Thermal Effects: (includes zero and span) ¡¾ 0.02% FS/¡ÆF, 30 to 150¡ÆF (-1 to 
65¡ÆC).
Wetted Parts: 17-4 PH stainless steel, 300 Series stainless steel, Viton and 
Silicone O-rings and bleed screw seals.
Housing: Stainless steel/Aluminum, NEMA 4X (IP56).
Process Connection: ¨ù" - 18 NPT(F).
Electrical Connection: Barrier strip terminal block with conduit enclosure 
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