AccuTru ExL High Temperature Thermocouples

Transcription

1 S E N S O R T E C H N O L O G I E S AccuTru ExL High Temperature Thermocouples Dedicated to those organizations that value improved temperature measurement for critical processes

2 S E N S O R T E C H N O L O G I E S About AccuTru ExL High Temperature Thermocouples TYPES Once your application requires measuring temperatures above 1230ºC (2246ºF), you will need to move from metal sheathed thermocouples to ceramic sheathed thermocouples. This also requires abandoning the conventional thermocouple types, N,K,E,T, and J for platinum thermocouples. For extreme applications, above the range for platinum thermocouples, a series of tungsten-rhenium thermocouples are available, although they are restricted to use in vacuum or reducing environments. The three types of platinum based thermocouples are S, R, and B. Both the S and R consist of a pure platinum leg and a second leg using various percentages of platinum and rhodium. The type S is considered the standard and the Type R is considered to be slightly more robust than the Type S. The B type consists of two legs with alloys of platinum and rhodium. A type B thermocouple will allow the measurement of higher temperatures than the R or S (1820ºC 3308ºF). However, the B type will not provide accurate measurements for temperatures under 425ºC degrees ). If you have an application where you need the performance of a B type thermocouple but also need accurate readings under 425ºC, please refer to the AccuTru SVS Sensor section. At high temperatures contaminants become much more active and will attack the platinum if it is not properly protected. The standard protection tube material is alumina. As with other components, there are a variety of alumina tubes available. AccuTru uses a very high density alumina tube that we treat using a proprietary process to improve the life of the tube and reduce the risk of thermoelement contamination. Platinum thermocouples require special care. Platinum likes oxygen so in oxidizing environments, a platinum thermocouple is happy, Conversely, a platinum thermocouple will have a very short life if exposed to a reducing atmosphere. In those cases, it is important to try and provide access to oxygen in the sheath to prevent early thermocouple failure. Contrary to platinum based thermocouples, tungsten-rhenium thermocouples will fail in a matter of hours if exposed to oxygen at operating temperatures so they can only be used in reducing or inert environments unless contained in a sheath that allows no oxygen penetration at operating temperatures. Various acidic gases, sulfur, and many other processes are known to attack the platinum wires if they are able to penetrate the protection tube. This causes drift or premature failure due to embrittlement. AccuTru has developed methods from simple purging of the element to new technologies that greatly improve the life and stability of the platinum elements.

3 Section 2 Index Model Metal Sheath and Ceramic Thermocouple Assemblies Page I1 GTAW Welded Hex Nipple w/ Head 2-1 I2 Spring Loaded Hex Nipple w/ Head 2-2 I3 Spring Loaded Pipe Nipple w/ Head 2-3 I4 Nipple-Union-Nipple w/ Spring Loaded Head 2-4 I5 Hex Nipple-Union-Nipple w/ Spring Loaded Head 2-5 PAGE 2-I

4 Section 2 Index Model Metal Sheath and Ceramic Thermocouple Assemblies Page L1 Alumina Ceramic Assembly w/ Metal Sheath Thermocouple 2-6 L2 Alumina Ceramic Assembly w/ Bare Wire Platinum Thermocouple 2-7 L3 HD247 Ceramic Assembly w/ Metal Sheath Thermocouple 2-8 L4 HD247 Ceramic Assembly w/ Platinum Thermocouple 2-9 M1 Multipoint w/ Box and Heat Transfer Block 2-10 PAGE 2-II

5 Section 2 Index Model Metal Sheath and Ceramic Thermocouple Assemblies Page M2 Multipoint with Box and Spring Loading 2-11 Thermocouple Requirements/Options 2-A Head Options 2-B PAGE 2-III

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7 MODEL I1 Welded Hex Nipple w/ Head Head with Terminal Block Welded Hex Nipple GTAW.11" Sheath Material O.D. 1" 1.6" Nom. Dim A (Length Below Threads) 3/4" NPT Conduit Connection I1 3 X X High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 304S = 304 SS 446S = 446 SS 276C = Hastelloy C276 HASX = Hastelloy X TITN = Titanium * Contact factory for other materials 5. SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters 11. NOT REQUIRED X = NOT APPLICABLE 9. LEAD WIRE INSULATION X = NOT APPLICABLE 8. LEAD WIRE LENGTH 10. WELDED HEX NIPPLE OPTIONS H8 = 1/2" NPT SS THREADS BOTH ENDS H12 = 3/4" NPT SS THREADS BOTH ENDS * Contact factory for other Thread Sizes 7. HEAD TYPE See Page 2-B for Head Options (A1G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field SENSOR LENGTH (Dim A) (In Inches xxx.xx) PAGE 2-1

8 MODEL I2 Spring Loaded Hex Nipple w Head Head with Terminal Block Spring-Loaded Hex Nipple Sheath Material O.D. 1" 1.6" Nom. Dim A (Uncompressed Length) 3/4" NPT Conduit Connection I2 3 X X High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 304S = 304 SS 446S = 446 SS 276C = Hastelloy C276 HASX = Hastelloy X TITN = Titanium * Contact factory for other materials 5. SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters 11. NOT REQUIRED X = Not Applicable 10. SPRING-LOADED HEX NIPPLE OPTIONS S8 = 1/2" NPT SS THREADS BOTH ENDS * Contact factory for other Thread Sizes 9. LEAD WIRE INSULATION X = Not Applicable 8. LEAD WIRE LENGTH 7. HEAD TYPE See Page 2-B for Head Options (A1G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field SENSOR LENGTH (Dim A ) (In Inches xxx.xx) PAGE 2-2

9 MODEL I3 Spring Loaded Pipe Nipple w/ Head Head with Terminal Block Spring-Loaded Sch. 40 Nipple Sheath Material O.D. 1" Dim "N". Dim B (Uncompressed Length) 3/4" NPT Conduit Connection I3 3 X High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 304S = 304 SS 446S = 446 SS 276C = Hastelloy C276 HASX = Hastelloy X TITN = Titanium * Contact factory for other materials 5. SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters 11. DIM "B" (Critical) (in inches xxx.xx) 10. NIPPLE OPTIONS NS8 = 1/2" NPT (Stainless Steel) NS12 = 3/4" NPT (Stainless Steel) NG8 = 1/2" NPT (Galvanized) NG12 = 3/4" NPT (Galvanized) (1/2" NPT Thread Engagement = ") (3/4" NPT Thread Engagement = ") 9. LEAD WIRE INSULATION X = Not Applicable 8. LEAD WIRE LENGTH 7. HEAD TYPE See Page 2-B for Head Options (A1G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field NIPPLE, LENGTH (Dim N, Nominal Length) 4 = 4" Dim N 6 = 6" Dim N * Contact factory for other lengths PAGE 2-3

10 MODEL I4 Spring Loaded Nipple-Union-Nipple w/ Head Head with Terminal Block Sch. 40 Nipple 150# Union Sch 40. Nipple Sheath Material O.D. 1" Dim "N". Dim B (Uncompressed Length) 3/4" NPT Conduit Connection I4 3 X High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 304S = 304 SS 446S = 446 SS 276C = Hastelloy C276 HASX = Hastelloy X TITN = Titanium * Contact factory for other materials 5. SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters 11. DIM "B" (Critical) (in inches xxx.xx) 10A. NIPPLE-UNION-NIPPLE OPTIONS NUNS8 = 1/2" NPT (Stainless Steel) NUNS12 = 3/4" NPT (Stainless Steel) NUNG8 = 1/2" NPT (Galvanized) NUNG12 = 3/4" NPT (Galvanized) 9. LEAD WIRE INSULATION X = Not Applicable 8. LEAD WIRE LENGTH 10B. HEX NIPPLE-UNION-NIPPLE OPTIONS SUNS8 = 1/2" NPT (Stainless Steel) SUNS12 = 3/4" NPT (Stainless Steel) 7. HEAD TYPE See Page 2-B for Head Options (A1G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 in field NIPPLE-UNION-NIPPLE (Dim N, Nominal Length) 4 = 4" Dim N 6 = 6" Dim N * Contact factory for other lengths PAGE 2-4

11 MODEL I5 Spring Loaded Hex-Nipple- Union-Nipple w/ Head Spring-Loaded Hex Nipple 150# Union Sch 40. Nipple Sheath Material O.D. 1" Dim "N". Dim B (Uncompressed Length) 3/4" NPT Conduit Connection I5 High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 304S = 304 SS 446S = 446 SS 276C = Hastelloy C276 HASX = Hastelloy X TITN = Titanium * Contact factory for other materials 5. SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters DIM "B" (Critical) (in inches xxx.xx) 10. HEX NIPPLE-UNION-NIPPLE OPTIONS SUNS8 = 1/2" NPT (Stainless Steel) SUNS12 = 3/4" NPT (Stainless Steel) 9. LEAD WIRE INSULATION B = Bare Wire 8. LEAD WIRE LENGTH 7. HEAD TYPE See Page 2-B for Head Options (A1G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field HEX NIPPLE-UNION-NIPPLE (Dim N, Nominal Length) 4 = 4" Dim N 6 = 6" Dim N * Contact factory for other lengths PAGE 2-5

12 MODEL L1 Alumina Ceramic Assembly Head w/ Metal Sheath Thermocouple Hex Nipple High Temperature Cement Alumina Ceramic Tube O.D. I.D. 1" 2" Nom. Inner Metal Sheath Thermocouple Dim U (Length Below Threads) 3/4" NPT Conduit Connection L1 X High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. INNER SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 446S = 446 SS 276C = Hastelloy C276 * Contact factory for other materials 5. INNER SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters O.D. I.D. P/N NPT Size Inches Inches * CH CH CH CH CH CH CH *Contact Factory 1/2" 1/2" 3/4" 3/4 3/4 1" 1" 7/16 3/ /16 3/ /16 1/ /16 9/ Table 1. Process Connection and Tube Sizes * Subjective to availability. 6. SENSOR LENGTH (Dim A Not Required Specify Dim U Only, Step 11) 11. DIM "U" (Critical) (in inches xxx.xx) 10. HEX NIPPLE AND CERAMIC TUBE DIAMETER OPTIONS CH8 = 1/2" NPT SS CH12 = 3/4" NPT SS CH16 = 1" NPT SS 9. LEAD WIRE INSULATION BF = Bare Wire with Fiberglass Sleeves T = Teflon (450 F) G = Fiberglass (900 F) 8. LEAD WIRE TERMINATION OPTIONS B = Bare Wire Termination L = Insulated Lead Wire 7. HEAD TYPE See Page 2-B for Head Options (A9G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field 12. PAGE 2-6

13 MODEL L2 Alumina Ceramic Assembly w/ Bare Wire Platinum Thermocouple Hex Nipple High Temperature Cement Alumina Ceramic Tube O.D. I.D. 1" 2" Nom. Inner Ceramic Insulator Thermocouple Dim U (Length Below Threads) 3/4" NPT Conduit Connection L2 24W X X 3 CP Alumina Inner Sheath M = Alumina Inner Sheath R = Type R S = Type S B = Type B F = Flush R = Recessed * Contact factory for assistance Recessed Flush 11. DIM "U" (Critical) (in inches xxx.xx) 10. HEX NIPPLE AND CERAMIC TUBE DIAMETER OPTIONS CH8 = 1/2" NPT SS CH12 = 3/4" NPT SS CH16 = 1" NPT SS See Table 1 for Other Sizes Exposed 4. WIRE SIZE 24W = 24AWG (0.020" OD) * Contact factory for other wire sizes 5. INSULATOR DIAMETER (Insulator Sized to Match Tube I.D.) 6. SENSOR LENGTH (Dim A Not Required Specify Dim U Only, Step 11) O.D. I.D. P/N NPT Size Inches Inches * CH /2" 7/16 5/16 CH /2" 3/8 1/4 CH /4" CH /4 11/16 7/16 CH /4 3/4 9/16 CH " CH " *Contact Factory Table 1. Process Connection and Tube Sizes *Subject to availability 9. WIRE TERMINATION CP = Copper Sleeves (1/16" OD x.250 Long) 8. LEAD WIRE LENGTH (Dim L = 3", Last Copper Sleeves) Copper Sleeves Ceramic Fish Spine.5" Dim L = 3" Ceramic Insulator 7. HEAD TYPE See Page 2-B for Head Options (A9G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field 12. PAGE 2-7

14 MODEL L3 HD247 Protection Tube Assembly Head, Hex Nipple and Metal Sheath Thermocouple Hex Nipple High Temperature Cement HD247 Protection Tube O.D. I.D. 1" 2" Nom. Metal Sheath Thermocouple Dim U (Length Below Threads) 3/4" NPT Conduit Connection L3 High Purity, Extended Life MGO = Magnesium Oxide K = Type K J = Type J N = Type N T = Type T E = Type E DK = Dual Type K DJ = Dual Type J DN = Dual Type N DT = Dual Type T DE = Dual Type E U = Ungrounded G = Grounded 4. INNER SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS 446S = 446 SS 276C = Hastelloy C276 * Contact factory for other materials 5. INNER SHEATH DIAMETER 062D = (Consult Factory) 125D = D = D = D = * Contact factory for other diameters 6. SENSOR LENGTH (Dim A Not Required Specify Dim U Only, Step 11) B 11. DIM "U" (Critical) (in inches xxx.xx) 10. HEX NIPPLE AND CERAMIC TUBE DIAMETER OPTIONS CH = 1/2" NPT SS, 3/8" O.D. Tube CH = 3/4" NPT SS, 5/8" O.D. Tube CH = 1" NPT SS, 3/4" O.D. Tube See Table 1 for other Tube Sizes * Contact Factory for other thread sizes 9. LEAD WIRE INSULATION BF = Bare Wire with Fiberglass Sleeves T = Teflon (450 F) G = Fiberglass (900 F) 8. LEAD WIRE TERMINATION OPTIONS B = Bare Wire Termination 7. HEAD TYPE See Page 2-B for Head Options (A9G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field 12. O.D. I.D. Inches Inches 3/8 1/4 5/8 3/8 3/4 1/2 1 1/2 1-1/4 3/4 1-1/2 1 Table 1. HD247 Tube Sizes PAGE 2-8

15 MODEL L4 HD247 Protection Tube Assembly Screw Cover Head, Hex Nipple High Temperature Thermocouple Hex Nipple High Temperature Cement HD247 Tube O.D. I.D. 1" 2" Nom. Inner Alumina Tube Dim U (Length Below Threads) 3/4" NPT Conduit Connection L4 24W X X 3 CP Alumina Inner Sheath M = Alumina Inner Sheath R = Type R S = Type S B = Type B F = Flush R = Recessed * Contact factory for assistance O.D. I.D. Inches Inches 3/8 1/4 5/8 3/8 3/4 1/2 1 1/2 1-1/4 3/4 1-1/2 1 Recessed Flush Exposed 4. WIRE SIZE 24W = 24AWG (0.020" OD) * Contact factory for other wire sizes Table 1. HD247 Tube Sizes 5. INSULATOR DIAMETER (Insulator Sized to Match Tube I.D.) 6. SENSOR LENGTH (Dim A Not Required Specify Dim U Only, Step 11) Alumina Insulator Inner Alumina Tube (Sized to Match Outer Tube) 11. DIM "U" (Critical) (in inches xxx.xx) 9. WIRE TERMINATION CP = Copper Sleeves (1/16" OD x.250 Long) 8. LEAD WIRE LENGTH (Dim L = 3", Last Copper Sleeves) Copper Sleeves Ceramic Fish Spine.5" Dim L = 3" 10. HEX NIPPLE AND CERAMIC TUBE DIAMETER OPTIONS CH = 1/2" NPT SS, 3/8" O.D. Tube CH = 3/4" NPT SS, 5/8" O.D. Tube CH = 1" NPT SS, 3/4" O.D. Tube See Table 1 for other Tube Sizes Ceramic Insulator 7. HEAD TYPE See Page 2-B for Head Options (A9G shown above as an example) All Heads include a 3/4" NPT Conduit Connection, for 1/2" NPT Conduit Connection add Code 91 to field 12. PAGE 2-9

16 MODEL M1 Reactor Multipoint w/ Box Heat Transfer Block w/ Guide Tube Box Myers Hub Pipe Nipple Union (3000#) Pipe Cap Flange Heat Transfer Block Guide Tube w/ Thermocouple Outer Protection Pipe (See Note 1) Pt. 4 Pt. 3 Pt. 2 Pt 1. (See Note 2) Dim "U" M1 High Purity, Extended Life MGO = Magnesium Oxide K = Type K DK = Dual Type K J = Type J DJ = Dual Type J N = Type N DN = Dual Type N T = Type T DT = Dual Type T E = Type E DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS * Contact factory for other materials 5. SHEATH DIAMETER 125D = D = D = * Contact factory for other diameters 6. NIPPLE, LENGTH * Contact factory X 7. JUNCTION BOX TYPE SS Continuous Hinge Type 4X with Back Plate. Specify Sizes: 644 = 6" x 4" x 4" 664 = 6" x 6" x 4" 864 = 8" x 6" x 4" 1084 = 10" x 8" x 4" = 12" x 10" x 6" = 12" x 12" x 6" = 14" x 12" x 6" = 16" x 14" x 6" 11. DIM "U" (Critical) (In Inches xxx.xx) 10. PIPE AND FLANGE (SPECIFY) Specify Protection Tube Pipe Size,Schedule,Material Example: 2" Sch 40, 316SS Specify Flange Size, Rating, Face and Material Example: 2" 300# RF, 316SS 9. LEAD WIRE INSULATION T = Teflon (450 F) G = Fiberglass (900 F) K = Kapton/Kapton (450 F) * All Lead Wire is Solid, 20 AWG, Special Limits For Stranded Wire add "F" to Code, Example: TF 8. LEAD WIRE LENGTH X = Not Applicable * Contact factory for other sizes and materials PT4. PT5. PT Notes: 1. Specify Points as Needed 2. If Point 1 not at Tip then Specify Sheath Length 3. This page intended as a guide only PT1. PT2. PT3. PAGE 2-10 Box with Barrier Terminal Strips

17 MODEL M2 Box Myers Hub Pipe Nipple Union (3000#) Reactor Multipoint w/ Box, Guide Tube, and Spring Loading Flange Outer Protection Pipe Pipe Cap Thermocouple Spring (See Note 1) Pt. 4 Pt. 3 Pt. 2 Pt 1. (See Note 2) Dim "U" M2 High Purity, Extended Life MGO = Magnesium Oxide K = Type K DK = Dual Type K J = Type J DJ = Dual Type J N = Type N DN = Dual Type N T = Type T DT = Dual Type T E = Type E DE = Dual Type E U = Ungrounded G = Grounded 4. SHEATH MATERIAL 600A = Alloy S = 316 SS 310S = 310 SS * Contact factory for other materials 5. SHEATH DIAMETER 125D = D = D = * Contact factory for other diameters 6. NIPPLE, LENGTH * Contact factory 11. DIM "U" (Critical) (in inches xxx.xx) 10. PIPE AND FLANGE (SPECIFY) Specify Protection Tube Pipe Size,Schedule,Material Example: 2" Sch 40, 316SS Specify Flange Size, Rating, Face and Material Example: 2" 300# RF, 316SS 9. LEAD WIRE INSULATION T = Teflon (450 F) G = Fiberglass (900 F) K = Kapton/Kapton (450 F) * All Lead Wire is Solid, 20 AWG, Special Limits For Stranded Wire add "F" to Code, Example: TF 8. LEAD WIRE LENGTH (Dim L = 4", Last 3" of Outer Jacket Stripped Last 1/2" All Insulation Stripped) PT4. PT5. PT Notes: 1. Specify Points as Needed 2. If Point 1 not at Tip then Specify Sheath Length 3. This page intended as a guide only 7. JUNCTION BOX TYPE SS Continuous Hinge Type 4X with Back Plate. Specify Sizes: 644 = 6" x 4" x 4" 664 = 6" x 6" x 4" 864 = 8" x 6" x 4" 1084 = 10" x 8" x 4" = 12" x 10" x 6" = 12" x 12" x 6" = 14" x 12" x 6" = 16" x 14" x 6" * Contact factory for other sizes and materials PT1. PT2. PT3. Box with Barrier Terminal Strips PAGE 2-11

18 Section 2 Thermocouple Requirements/Options Options Code NIST Calibration (Customer to Specify Points) Certified Drawing Magnetic Mounts (Contact factory) TERMINATION OPTIONS Open Lugs 8 Gauge Lugs Knurl Nut Spring-Loaded SS Hex Nipple TRANSITION OPTIONS In Line Transition (Same OD as Sensor) 31 1/4" OD Transition to replace standard 3/8" OD Transition 32 5/16" OD Transition x 5/8" Long to replace standard 33 High Temperature Epoxy (Rated to 311 F) 34 Ultra High Temperature Epoxy (Rated to 600 F) 35 High Temperature Cement 36 Silver Braze Transition to Sensor to replace Crimp 37 Note: Standard Epoxy Temperature Rating is 266 F Code 81 Knurl Nut Option on Spring Loaded Hex Nipple Figure 2-A LEAD WIRE OPTIONS 24 GAUGE GAUGE 42 Standard Limits of Error Wire 43 CORD GRIP CONNECTORS 1/2" NPT Aluminum 3/4" NPT Aluminum CONNECTOR OPTIONS Hollow Pins on Connector to replace Solid Pins Braze Adaptor to replace Tube Adaptor on Connector TAGS SS Tag to replace Paper Tag FITTINGS Knurl Nut on Spring Loaded Hex Nipple to replace standard Oil Seal Fitting 1/2" NPT x 1/2" NPT HEAD AND TERMINAL BLOCKS 1/2" NPT Conduit Connection 91 3/4" NPT Process Side Connection 92 Ceramic Terminal Block with Spring 93 Ceramic Terminal Block with No Spring 94 Bakelite Terminal Block 95 Ground Screw on Head 96 PAGE 2-A

19 Section 2 RTD Head Options All Head Connections are 1/2" NPT Instrument x 3/4" NPT Conduit Head Description Part Number General Purpose Screw Cover with SS Chain Supplied with ceramic terminal block. (Consult Factory for Sensor's over 1/4" OD) Aluminum Stainless Steel A1G S2G General Purpose NEMA 4X Screw Cover with SS Chain Supplied with ceramic terminal block. Aluminum Cast Iron Stainless Steel A3R I3R S3R General Purpose Economical Screw Cover with SS Chain Supplied with ceramic terminal block. Aluminum Poly/White, FDA Approved Nylon/Gray A4G P4G N4G General Purpose Clamp Cover Supplied with ceramic terminal block. Aluminum A8G General Purpose Heavy Duty Screw Cover with SS Chain Supplied with ceramic terminal block. Aluminum Cast Iron Cast Iron (Gasket for NEMA 4, Ground Screw) A9G I9G I9H Explosion Proof - FM/CSA Class I, Div. 1, Gr. B,C, & D, Class II, Div. 2 Gr. E,F,&G (See Note 1) Screw Cover with SS Chain Supplied with ceramic terminal block. Phenolic Blocks available. Aluminum, NEMA 4 A1P Stainless Steel, NEMA 4X S2X Large Explosion Proof Class I, Div. 1, Gr. B,C, & D, Class II, Div. 2 Gr. E,F,&G (See Note 1) No Chain Supplied with phenolic or nylon barrier terminal strip. Aluminum, NEMA 4 A6E Cast Iron Body/ Aluminum Cover, NEMA 4 I6E Note 1: In Group "B" Atmospheres, all conduit runs must have a sealing fitting(not supplied) field installed adjacent to the enclosure PAGE 2-B