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Spring-Loaded RTD/Thermowell Assemblies with General-Purpose Connection Heads are designed for use with various thermowell types. Complete assemblies can be ordered by selecting the RTD assembly below, the thermowell from the thermowell section of this catalog, and a temperature transmitter from the back of this section. Assemblies without a thermowell can be ordered by selecting the sensor assembly from this page and inserting the "S" length in table 2-0. These sensors are supplied with a 316 stainless steel sheath and are available in various tolerances and temperature ranges as noted in the tables below.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Configuration Code

 N/A GP03

Sheath Diameter (316 Stainless Steel)

 N/A Code 38 - 3/16 inCode 48 - 1/4 in

Element Connection

 N/A Code 2 - 2-Wire Element Code 3 - 3-Wire Element Code 4 (Not Available in Duplex or with 440 Series Transmitter) - 4-Wire Element

Element Options

 N/A Code SC - Self-contained spring-loaded element Code SL (Not Available with Option 35T, 36T, or 37T) - Spring-loaded element Code SN - Self-contained spring-loaded element with Buna-N oil seal 121 ºC (250 ºF) 100 PSI Maximum.

Head Mounting Fittings

 N/A Code 6HN - 1/2 in. x 1/2 in. National Pipe Thread (NPT) hex nipple 1 in. length (Steel Fittings) Code 6PN - 1/2 in. National Pipe Thread (NPT) pipe nipple specify "E" length in inches) (Steel Fittings) Code 6PU (4 in. Minimum length required) - 1/2 in. National Pipe Thread (NPT) union/nipple specify "E" length in inches) (Steel Fittings) Code 8HN - 1/2 in. x 1/2 in. National Pipe Thread (NPT) hex nipple 1 in. length (316 Stainless Steel Fittings Material) Code 8PN - 1/2 in. National Pipe Thread (NPT) pipe nipple specify "E" length in inches) (316 Stainless Steel Fittings Material) Code 8PU (4 in. Minimum length required) - 1/2 in. National Pipe Thread (NPT) union/nipple specify "E" length in inches) (316 Stainless Steel Fittings Material)

Head and Sheath Terminations

 N/A Code 22 - 3 in. Individual fluoropolymer leads with terminal pins Code 31 - Aluminum screw-cover head Code 34 - Cast iron screw-cover head Code 35T142A - (4 to 20) mA HART® Field Transmitter with aluminum general-purpose housing Code 36T82-D10 - (4 to 200) mA dual input HART® transmitter with digital display general-purpose aluminum housing with glass lid Code 37T-662A - (4 to 20) mA HART® dual cavity field temperature transmitter with general-purpose aluminum housing Code 49 - Flip-top aluminum head Code 63 - White polypropylene screw-cover head Code 91 - 316 L stainless steel screw-cover head

100 Ohm (O) Platinum Resistance Temperature Detector (RTD) Elements (α = 0.003 85 ºC-1)

Tolerance1 N/A Code R1T185H (Single) Tolerance -Grade B Code R1T185L (Single) Tolerance - Grade B Code R1T285H (Duplex) Tolerance - Grade B Code R1T285L (Duplex) Tolerance - Grade B Code R5T185L (Single) Tolerance -(1/5) Class B Code R5T285L (Duplex) Tolerance - (1/5) Class B Code RAF185L (Single) Tolerance - Class A Code RAF285L (Duplex) Tolerance - Class A Code RAT185H (Single) Tolerance - Class A Code RAT285H (Duplex) Tolerance - Class A Code RBF185L (Single) Tolerance - Class B Code RBF285L (Duplex) Tolerance - Class B

Temperature Range

 N/A Code (Duplex) R1T285L : -200 to 200 ºCCode R1T185H (Single) : -200 to 600 ºCCode R1T185L (Single) : -200 to 200 ºCCode R1T285H (Duplex) : -200 to 600 ºCCode R5T185L (Single) : -30 to 150 ºCCode R5T285L (Duplex) : -30 to 150 ºCCode RAF185L (Single) : -30 to 200 ºCCode RAF285L (Duplex) : -30 to 200 ºCCode RAT185H (Single) : -100 to 450 ºCCode RAT285H (Duplex) : -100 to 450 ºCCode RBF185L (Single) : -50 to 200 ºCCode RBF285L (Duplex) : -50 to 200 ºC

Options

Options

 N/A Code GS - Ground screw Code I - Stainless tag Code NB - 1/2" National Pipe Thread (NPT) nylon conduit reducer bushing Code SB - 1/2"National Pipe Thread (NPT) conduit reducer bushing Code T31 - (4 to 20) mA Head-mounted Resistance Temperature Detectors (RTD) transmitter Code T71 - (4 to 20) mA Isolated Head-Mounted Transmitter Code T72 - (4 to 20) mA Isolated HART® Head-Mounted Transmitter Code T82-00 - (4 to 20) mA dual input HART® head-mounted transmitter Code W (Available with option 31 only.) - Epoxy Coating

Note

Note

 N/A Select thermowell part number from Thermowell Section, or specify 3 digit "S" length in inches if no thermowell is required.
  • 1 Refer to Resistance Temperature Detectors (RTD) tolerance information in the General Information section for calculations to determine specific tolerance at temperature.