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The Weld-In RTD temperature sensor assemblies listed below are commonly used in the food, dairy, beverage, pharmaceutical, and chemical processing industries. The complete assemblies are provided with a 3-wire platinum RTD element sealed inside a 1/4" O.D., spring-loaded, stainless steel sheath, and with a heavy wall sanitary protection well. Thermowells are supplied with a surface finish that meets or exceeds 32µin Ra Surface finishes of 15µin Ra or better are available upon request. The well is to be welded into a tank or vat with a full crevice-free fillet-weld to prevent corrosion, bacteria growth, and product contamination. Assemblies are provided with a white FDA compliant polypropylene connection head. The complete assembly provides excellent washdown protection.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Configuration Code

 N/A FD06

Maximum Temperature

 N/A 200 ºC392 ºF

Weld-In Wells S Dimension

 N/A Code W81-18 - 8 (1/4) inCode W81-28 - 9 (7/8) inCode W81-38 - 11 (5/8) inCode W81-48 - 12 (7/8) in

Weld-In Wells U Dimension

 N/A Code W81-18 - 3 (1/4) inCode W81-28 - 3 (1/4) inCode W81-38 - 5 inCode W81-48 - 3 (3/4) in

Element Style

 N/A Code SC - Self-contained spring-loaded element Code SL - Spring-loaded element ((Not available with 35, 36, or 37 )Series Transmitters)

Head Extensions

 N/A Code 8HN - 316 Stainless Steel 1/2 in. National Pipe Thread (NPT) hex fitting Code 8PN(E) - 316 Stainless Steel pipe nipple (specify length in inches)

Head Options

 N/A Code I - Stainless Steel Tag Code T-440 - (4 to 20) mA head-mounted RTD transmitter Code T-441 - (4 to 20) mA isolated head-mounted transmitter Code T-442 - (4 to 20) mA isolated HART® head-mounted transmitter Code T82-00 - (4 to 20) mA dual input HART® head-mounted transmitter

Certification

 N/A 3-A Sanitary Standard 74

Pt100 (α = 0.003 85 ºC-1) Resistance Temperature Detector (RTD) Assemblies

Tolerance1 N/A Code R1T185L483 (Single) - Grade B Code R1T285L483 (Duplex) - Grade B Code R3T185L483 (Single) - Class AA Code R3T285L483 (Duplex) - Class AA Code R5T185L483 (Single) - (1/5) Class B Code R5T285L483 (Duplex) - (1/5) Class B Code RAF185L483 (Single) - Class A Code RAF285L483 (Duplex) - Class A

Normal Sheath Outer Diameter (OD)

 N/A Code R1T185L483 (Single) - 1/4 inCode R1T285L483 (Duplex) - 1/4 inCode R3T185L483 (Single) - 1/4 inCode R3T285L483 (Duplex) - 1/4 inCode R5T185L483 (Single) - 1/4 inCode R5T285L483 (Duplex) - 1/4 inCode RAF185L483 (Single) - 1/4 inCode RAF285L483 (Duplex) - 1/4 in

Termination

Termination

 N/A Code 31,W - Aluminum screw-cover head with white epoxy coating Code 35T-642A - (4 to 20) mA HART® Field Transmitter with aluminum general-purpose housing Code 36T82-D10 - (4 to 20) mA dual input HART® transmitter with digital display and general-purpose aluminum housing with glass lid Code 37T-662A - (4 to 20) mA HART® Field Transmitter with general-purpose aluminum housing Code 63 - White polypropylene screw-cover head Code 91 - 316L stainless steel screw-cover head

Note

Note

 N/A HART® is a registered trademark of HART® Communication Foundation.
  • 1 Code Refer to RTD tolerance information in the General Information section for calculations to determine specific tolerance at temperature.