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Explosion-Proof Resistance Temperature Detectors (RTD) Assemblies with Thermowells are made for use in U.S. and Canadian hazardous areas. They are designed to extinguish flames inside the device, eliminating the potential for ignition of flammable mixtures in the surrounding atmosphere. FM and CSA approved assemblies, dependent on connection head type, meet XP Class I Division I & II; Groups A, B, C, D; DIP Class II Division I; Groups E, F, G; Class III; Type 4/4X. The required thermowell is available in standard, heavy-duty, and flanged constructions. The assemblies feature 316 stainless steel sheaths. They are available with aluminum or stainless steel explosion-proof connection heads.
Unit of Measure

Specifications

Agency Approval

 N/A Code XP - FM/CSA explosion-proof-approved assembly

Tolerance

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

Temperature Range

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

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 - 4-wire element

Element Options

 N/A Code SC - Self-contained spring-loaded element Code SL - Spring-loaded element Code SN - Self-contained spring-loaded element with Buna-N oil seal 121 ºC 250 ºF] 100 PSI Max.

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 - 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 (316 Stainless Steel fittings) Code 8PN 1/2" National Pipe Thread (NPT) pipe nipple (specify "E" length in inches) (316 Stainless Steel fittings) Code 8XU 1/2" National Pipe Thread (NPT) union/nipple (specify "E" length in inches) (316 Stainless Steel fittings)

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

Options

 N/A Code I - Stainless tag 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, isolated HART® head-mounted transmitter

Configuration Code

 N/A GP03