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Dwyer Series
637S
Sanitary Pressure Transmitter
Meets NACE and 3A Sanitary Standards; Accuracy ±0.25%
3A


Low cost, durable sanitary pressure transmitter is designed to meet 3A standards allowing use in food, dairy, beverage and pharmaceutical industries. This unit features superior ± 0.25% accuracy and 5:1 turndown. Calibration is quick and easy with field accessible zero and span adjustments. All stainless steel construction resists the corrosive effects of caustic washes used in most food processing cleaning procedures. 1 ½" Tri-Clover process connection is suitable for Clean-in-Place (CIP) applications, eliminating the need for expensive bypass piping, valving or removal requirements for steam cleaning.


FACTORY STOCKED MODELS
Model Number
Stock Range, PSI (Bar)
Minimum Range PSI (Bar)
637S-0
6376-1
6376-2
6376-3
0-15 (0-1)
0-30 (0-2)
0-100 (0-7)
0-300 (0-20)
0-6 (0-0.4)
0-15 (0-1)
0-20 (0-1.4)
0-60 (0-4)


PHYSICAL DATA
Service:   Liquid, as or vapor
Output:   4-20 mA DC, max. 30 mA DC (2-wire)
Power Supply:   12-40 VDC with reverse polarity protection
Loop Resistance:   600 ohms @ 24 VDC; max. ohms = (supply voltage-12)x50
Turndown:   5:1
Zero and Span Adjustment:   ±10% each
Temperature Limits:   process interface -40 to 212° F (-40 to 100° C)
Accuracy:   ± 0.25% of calibrated span
Response Time:   time constant, 20 ms
Stability:   ± 0.5% of upper range limit for six months
Thermal Effect:   (includes zero and span) ± 1% of upper range limit per 50° F (30 to 130° F); ±1.6% of upper range limit per 50° F (10 to 180° F).
Wetted Parts:   316L stainless steel
Electrical Connection:   1/3" NPTF
Process Connection:   1 ½" Tri-Clover
Body:   316 Stainless Steel
Weight:   1.67 lbs. (752 grams)

SUGGESTED SPECIFICATIONS
Sanitary Pressure transmitter shall be 316 SS construction with 5:1 turndown and ±0.2455 F.S. accuracy. Unit shall meet NACE and 3A sanitary standards. Transmitter shall have 1 ½' Tri-Clover processes connection and is suitable for Clean-in-Place (CIP) applications. Unit shall have field accessible zero and span adjustments. Transmitter shall be Dwyer Model No. 637S___.



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