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Fixed-Sheath RTD Assemblies with Explosion-Proof Connection Heads are provided with head mounting fittings that are welded or brazed to the sheath for direct immersion into a process. To order an assembly with an option 4 to 20 mA transmitter, select the assembly below and the transmitter from the back of this section. The RTD assemblies are supplied with a 316 stainless steel sheath in several diameters. They are available in various tolerances and temperature ranges as noted below.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Configuration Code

 N/A GP01

Sheath Diameters

 N/A Code 28 (Not available in duplex) - 1/8 inCode 38 - 3/16 inCode 48 - 1/4 inCode 68 - 3/8 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

"X" Dimensions

 N/A Insert three digit "X" length in inches Sheath lengths over 72 in. will be shipped in a coiled configuration unless otherwise specified

No Fitting

 N/A Code 00

Head Mounting Fittings

 N/A Code 6HN - 1/2 in. x 1/2 in. NPT steel hex nipple 1 in. "E" length Code 8HN - 1/2 in. x 1/2 in. NPT stainless steel hex nipple 1 in. E length Code 8RNDC - 3/4 in. x 1/2 in. NPT stainless steel hex nipple Code 9HP - 1/2 in. NPT stainless steel bushing (no process threads)

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 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® 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) - 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 : -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

One-Time Adjustable Fittings

Type (One-Time Adjustable Fittings)

 N/A Code 01A - 303 Stainless Steel Code 05A - 316 Stainless Steel Code 05B - 316 Stainless Steel Code 05C - 316 Stainless Steel Code 14 - Brass/Steel Code 15A - Brass Code 15B - Brass Code 15C - Brass

National Pipe Thread (NPT) Size (One-Time Adjustable Compression Fittings)

 N/A Code 01A - 1/8 Code 05A - 1/8 Code 05B - 1/4 Code 05C - 1/2 Code 14 - Flange Code 15A - 1/8 Code 15B - 1/4 Code 15C - 1/2

Sheath Diameter (One-Time Adjustable Compression Fittings)

 N/A Code 01A - 1/8, 3/16, 1/4 Code 05A - 1/8, 3/16, 1/4, Code 05B - 1/8, 3/16, 1/4, 3/8 Code 05C - 1/8, 3/16, 1/4, 3/8 Code 14 - 1/8, 3/16, 1/4, 3/8 Code 15A - 1/8, 3/16, 1/4 Code 15B - 3/16, 1/4, 3/8 Code 15C - 1/4, 3/8

Re-Adjustable Compression Fittings

Type (Re-Adjustable Compression Fittings)

 N/A Code 10A - 303 Strainless Steel Code 10B - 303 Strainless Steel Code 10C - 303 Strainless Steel Code 11A - Brass Code 11B - Brass Code 11C - Brass Code 12A - 316 Strainless Steel Code 12B - 316 Strainless Steel Code 12C - 316 Strainless Steel Code 19C - Spring-loaded Strainless Steel well fitting

National Pipe Thread (NPT) Size (Re-Adjustable Compression Fittings)

 N/A Code 10A - 1/8 Code 10B - 1/4 Code 10C - 1/2 Code 11A - 1/8 Code 11B - 1/4 Code 11C - 1/2 Code 12A - 1/8 Code 12B - 1/4 Code 12C - 1/2 Code 19C - 1/2

Sheath Diameter (Re-Adjustable Compression Fittings)

 N/A Code 10A - 1/8, 3/16 Code 10B - 1/4, 3/8 Code 10C - 1/4, 3/8 Code 11A - 1/8, 3/16, 1/4 Code 11B - 1/8, 3/16, 1/4, 3/8 Code 11C - 1/4, 3/8 Code 12A - 1/8, 3/16, 1/4 Code 12B - 1/8, 3/16, 1/4, 3/8 Code 12C - 1/8, 3/16, 1/4, 3/8 Code 19C - 3/16, 1/4

Note for Re-Adjustable Compression Fittings

 N/A FEP gland standard 204 ºC (400 ºF) maximum.

Fixed Bushings

Fixed Bushing Mounting National Pipe Thread (NPT) Size

 N/A Code 8A - 1/8 Code 8B - 1/4 Code 8C - 1/2 Code 8D - 3/4

Fixed Bushing Sheath Diameter

 N/A Code 8A - 1/8, 3/16, 1/4 Code 8B - 1/8, 3/16, 1/4, 3/8 Code 8C - 1/8, 3/16, 1/4, 3/8 Code 8D - 1/8, 3/16, 1/4, 3/8

Bushing Material (Fixed Bushings)

 N/A 316 Strainless Steel

Note for Fixed Bushing

 N/A Requires Table 4, Option 9HP Selection

When ordering fixed bushings, specify order code above plus insert length "U", as measured from hot tip to bottom of threaded bushing. Example: order code 8A06 is 1/8 in. NPT, 316 SS bushing located 6" from ho

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 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
  • 1 Refer to Resistance Temperature Detectors (RTD) tolerance information in the General Information section for calculations to determine specific tolerance at temperature.