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TI111R/24/ae

Technical Information

Thermocouples TH51, TH52 & TH56

General purpose MgO insulated thermocouples with connection 
head, extension lead wires or connectors for process and laboratory 
applications

Areas of application

Magnesium Oxide insulated thermocouples, 
commonly referred to as MgO thermocouples, are 
used in many process and laboratory applications. 
They have many desirable characteristics making 
thermocouples a good choice for general and special 
purpose applications.
The sensors can be used on:
• Heat exchangers
• Power & recovery areas
• Furnaces
• Dryers
• Flue gas
• Compressor stations
• Process reactors
• Metallurgical and Glass manufacturing

Head transmitters

Instead of directly wiring your temperature sensors to 
your control system, use transmitters to reduce 
wiring and maintenance costs while increasing 
measurement accuracy.

Your benefits

• One source shopping for temperature measurement 

solutions. World class transmitter with integrated sensor 
offering.
– Remove and install straight out of the box!

• Improved galvanic isolation on most devices (2 kV)
• Simplified model structure: Competitively priced, offers 

great value. Easy to order and reorder. A single model 
number includes sensor and transmitter assembly for a 
complete point solution.

• All iTEMP

®

 transmitters provide long term

stability 

 0.05 % per year

Summary of Contents for Thermocouples TH51

Page 1: ...ces Dryers Flue gas Compressor stations Process reactors Metallurgical and Glass manufacturing Head transmitters Instead of directly wiring your temperature sensors to your control system use transmitters to reduce wiring and maintenance costs while increasing measurement accuracy Your benefits One source shopping for temperature measurement solutions World class transmitter with integrated sensor...

Page 2: ...urrent the maximum volt drop is never exceeded The analog signal at the input is digitalized analyzed and shown in the rear illuminated display For details see Technical Information see Documentation RNS 221 The RNS 221S power supply 24 V DC 30 mA has two galvanically isolated outputs for supplying voltage to loop powered transmitters The two channel power supply has a wide range input for main po...

Page 3: ... configured quickly and easily with a PC To help you with this task Endress Hauser offers free software ReadWin 2000 which can be downloaded from our website Go to www readwin2000 com to download ReadWin 2000 today HART device TMT 182 HART communication is all about easy reliable data access and getting better information more inexpensively iTEMP transmitters integrate seamlessly into your existin...

Page 4: ... the set span The larger value applies Junction Style 1 16 1 8 3 16 1 4 3 8 Grounded 0 3 0 6 0 9 1 3 3 5 Ungrounded 0 4 1 6 2 4 2 9 7 2 Temperature Range Standard Tolerance IEC Class 2 Special Tolerance IEC Class 1 Type C F C whichever is greater C whichever is greater E 0 to 870 32 to 1600 1 7 or 0 5 1 or 0 4 J 0 to 760 32 to 1400 2 2 or 0 75 1 1 or 0 4 K 0 to 1260 32 to 2300 2 2 or 0 75 1 1 or 0...

Page 5: ...is thermocouple design may cause a ground loop This can be avoided by using iTEMP transmitters with high galvanic isolation Wiring Wiring diagrams Type of sensor connection TH51 Note TH52 is available only with conductor external lead wires DIN rail transmitters TMT 121 PCP TMT 122 HART are available see Documentation Note The blocks and transmitters are shown as they sit inside the heads in refer...

Page 6: ... 20 2 24 3 16 1 20 2 24 1 20 2 20 3 8 1 20 2 20 Type Single conductor Duplex conductor Max conti nuous tempe rature Notes Insulation Impregnation Insulation Impregnation Fiberglass Glass Braid 0 006 Silicone modi fied resin Glass braid 0 006 Silicone modi fied resin 900 F 482 C Impregnation retained to 400 F 204 C Teflon FEP extruded 0 008 FEP extruded 0 010 400 F 204 C A STANDARD T09 TH5156xx 04 ...

Page 7: ...her mocouple connectors and ASTM E 1684 Standard Specification for Miniature Thermocouple Connectors YES NO Single Conductor Overall T C wire E EP Nickel 10 chromium X Purple Brown Purple EN Copper 45 nickel constantan X Red J JP Iron X White Brown Black JN Copper 45 nickel constantan X Red K KP Nickel 10 chromium X Yellow Brown Yellow KN Nickel 5 aluminium silicon 2 2 Silicon or aluminium and sil...

Page 8: ...sible slightly exceeded by the tip of the probe C D Tilted installation Insertion length Minimum immersion length should be 10 times the OD of the sheath nominal Environmental conditions Ambient temperature Housing without head mounted transmitter Aluminum pressure die cast housing 40 to 302 F 40 to 150 ºC Plastic housing 40 to 185 F 40 to 85 C Housing with head mounted transmitter 40 to 185 F 40 ...

Page 9: ...low velocity air vw s flow velocity water or steam Example calculation Probe 316 SS sheath 0 028 wall thickness Note Avoid resonance frequency as this will cause damage to the probe L 4 and 6 inch Resonance frequency occurs when permanent flow velocity is at 18 1 22 6 or 27 1 ft s air for 6 inch and or 40 5 50 6 or 60 8 ft s air for 4 inch probe T 482 F p 2700 2600 psi L 9 and 12 inch Resonance fr...

Page 10: ...he table below Note Duplex version 2 elements of TH56 is not available Dimensions in inches Immersion length X Wire length B Sheath diameter A Wall thickness S TH51 TH52 TH56 4 6 9 12 6 12 18 24 12 18 24 48 72 96 48 72 120 specified length 12 to 3600 in 12 increments 1 16 0 007 1 8 0 014 3 16 0 022 1 4 0 029 specified length 2 to 96 in increments 3 8 0 045 ...

Page 11: ...s are also recommended for use in extreme positive or negative temperatures rapid thermal cycling and for ultimate corrosion resistance of the sheath alloy iTEMP transmitters have an excellent noise immunity EMC meeting all requirements listed under IEC61326 for use in noisy environments Note Dual ungrounded elements supplied with individually isolated junctions except Ø 1 16 which are supplied wi...

Page 12: ... nylon reducer bushing FDA compliant Degree of protection NEMA 4x SMART Temperature field transmitter iTEMP HART TMT 162 T09 TMT162ZZ 06 00 xx ae 002 Material Die cast aluminium housing AlSi10Mg with powder coating on polyester base or stainless steel AISI 316L SS Separate electronics compartment and connection compartment Display rotatable in 90 increments Cable entry 2 x NPT or others Degree of ...

Page 13: ...hermocouples Reference tables ASTM E 230 Standard Specification and Temperature Electromotive Force EMF Tables for Standardized Thermocouples ASTM E839 American society for testing and materials Standard test methods for sheathed thermocouples and sheathed thermocouple material ASTM E 1129 E 1129M 98 Standard Specification of Thermocouple connectors ASTM E 1684 Standard Specification for Miniature...

Page 14: ... length X 2 96 inch 1 4 inch 2 6 inch 3 9 inch 4 12 inch 8 inch to spec 9 inch special Sheath diameter Material B 1 8 inch 316 SS C 3 16 inch 316 SS E 1 4 inch 316 SS F 3 8 inch 316 SS J 1 8 inch Inconel 600 K 3 16 inch Inconel 600 L 1 4 inch Inconel 600 M 3 8 inch Inconel 600 Y Special Type Sensor IEC Class A 1x J 2 B 2x J 2 C 1x J 1 D 2x J 1 E 1x K 2 F 2x K 2 G 1x K 1 H 2x K 1 J 1x E 2 K 2x E 2 ...

Page 15: ...Special Electrical connection C Programmable thermocouple TMT181 Non Ex D Programmable thermocouple TMT181 FM IS E Programmable thermocouple TMT181 CSA IS P HART TMT182 Non Ex R HART TMT182 FM IS T HART TMT182 CSA IS Y Special 2 Flying leads 3 Terminal block Documentation requirement 1 Standard 9 Other Test calibration A None Y Other Model K Standard model North American region Y Other Additional ...

Page 16: ...ial Sheath diameter Material A 1 16 inch 316 SS B 1 8 inch 316 SS C 3 16 inch 316 SS E 1 4 inch 316 SS H 1 16 inch Inconel 600 J 1 8 inch Inconel 600 K 3 16 inch Inconel 600 L 1 4 inch Inconel 600 Y Special Type Sensor IEC Class A 1x J 2 B 2x J 2 C 1x J 1 D 2x J 1 E 1x K 2 F 2x K 2 G 1x K 1 H 2x K 1 J 1x E 2 K 2x E 2 L 1x E 1 M 2x E 1 N 1x N 2 O 2x N 2 P 1x N 1 Q 2x N 1 R 1x T 2 S 2x T 2 T 1x T 1 ...

Page 17: ...cial Leadwire termination A Standard B Standard female C Mini D Mini female E Standard high temp G Standard female high temp H Leads stripped 2 inch J Leads stripped 2 inch spade plugs Y Special Documentation requirement 1 Standard 9 Other Test calibration A None Y Other Model K Standard model North American region Y Other Additional option 1 None 9 Special TH52 Order code complete ...

Page 18: ...8 inch 5 72 inch 6 96 inch 8 inch to spec 9 inch special Sheath diameter Material A 1 16 inch 316 SS B 1 8 inch 316 SS C 3 16 inch 316 SS E 1 4 inch 316 SS H 1 16 inch Inconel 600 J 1 8 inch Inconel 600 K 3 16 inch Inconel 600 L 1 4 inch Inconel 600 Y Special Type Sensor Class A 1x J 2 C 1x J 1 E 1x K 2 G 1x K 1 J 1x E 2 L 1x E 1 N 1x N 2 P 1x N 1 R 1x T 2 T 1x T 1 Y Special Junction style purity ...

Page 19: ...TH56 Endress Hauser 19 Documentation requirement 1 Standard 9 Other Test calibration A None Y Other Model K Standard model North American region Y Other Additional option 1 None 9 Special TH56 Order code complete ...

Page 20: ... Temperature head transmitter iTEMP PCP TMT 181 TI 070r 24 ae Technical information Temperature head transmitter iTEMP HART TMT 182 TI 078r 24 ae Application example Technical information Temperature transmitter iTEMP PCP DIN rail TMT 121 TI 087r 24 ae Technical information Temperature transmitter iTEMP HART DIN rail TMT 122 TI 090r 24 ae Technical information Process display RIA 261 TI 083r 24 ae...

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