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Spring-Loaded RTD/Thermowell Assemblies with Explosion-Proof 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

Head Terminations

 N/A Code 74 - Dual conduit DIN form B aluminum explosion-proof/flame-proof head, NEC, IEC, Atex approved Code 75T142C - (4 to 20) mA HART® field transmitter with aluminum explosion-proof housing, Group A Code 76T82-D10 - (4 to 20) mA dual input HART® Field Transmitter with digital display and explosion-proof aluminum housing, Group A Code 77T-662C - (4 to 20) mA HART® Field Transmitter with dual cavity explosion-proof aluminum housing, Group A Code 93 - Aluminum explosion-proof/flame-proof head, NEC, IEC, Atex approved Code 94 - 316L stainless steel explosion-proof/flame-proof head, NEC, IEC, Atex approved

Head Mounting Fittings

 N/A Code 6HN - 1/2" x 1/2" National Pipe Thread (NPT) hex nipple 1" length (Steel Fittings) Code 6PN - 1/2" National Pipe Thread (NPT) pipe nipple (specify "E" length in inches) (Steel Fittings) Code 6XU (3 1/2" Minimum length required) - 1/2" National Pipe Thread (NPT) union/nipple (specify "E" length in inches) (Steel Fittings) Code 8HN - 1/2" x 1/2"National Pipe Thread (NPT) hex nipple 1" length (316SS Fittings) Code 8PN - 1/2" National Pipe Thread (NPT) pipe nipple (specify "E" length in inches) (316SS Fittings) Code 8XU (3 1/2" Minimum length required) - 1/2" National Pipe Thread (NPT) union/nipple (specify "E" length in inches) (316SS Fittings)

Head Mounting Fitting Material

 N/A 316 Stainless Steel Steel

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

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

Temperature Range

 N/A Code R1T185H (Single) : -200 to 600 ºCCode R1T185L (Single) : -200 to 200 ºCCode R1T285H (Duplex) : -200 to 600 ºCCode R1T285L (Duplex) : -200 to 200 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 I - Stainless tag Code SB - 1/2" National Pipe Thread (NPT) conduit reducer bushing Code T31 (Not Available with Option 74) - (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 HEAD - (4 to 20) mA dual input, isolated HART® head-mounted transmitter

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.