INDUSTRIAL THERMOCOUPLES
STYLE T-5590 (U.S. Patent 3,625,775)
Multi-purpose high temperature thermocouple assembly developed for continous use to 1600 °C (3000 °F) in both oxidizing or reducing atmospheres-pressures to 70 Kg/cm² (1000 psi).
High Temperature Section:
Diameter = 12.7 mm (0.5 in)
Lengths = 76.3 to 433 mm (3 to 17 in)
Support Section "A":
Diameter = 15.9 mm (0.625 in)
Lengths = 102 to 1525 mm (4 to 60 in)
Total Length "L":
178 to 1960mm (7 to 77 in)
This industrial thermocouples may be used for temperatures above the Chromel / Alumel range in environments that either destroy or render Platinum -Rhodium thermocouples ineffective due to drift or ageing affects. The refractory Tungsten 5% Rhenium / Tungsten 26% Rhenium element is protected against contamination or oxidation thru the unique double insulation-double wall construction that selectively eliminates all but the beneficial diffusion of Hydrogen. Internal thermocouple junction reliability is maintained thru a new (patent pending) wire wrap / welding procedure to elminate the problems associated with thermal cycling welded junctions on refractory wires. This sensor combines the stability and sensitivity (4.4 microvolts per °C) of the new refractory thermocouple combinations with the atmospheric resistance and strength of cermets.
APPLICATION
- Gas generator temperature indication and control
- Metal annealing, hardening and deoxidizing furnaces
- Calcining and glazing Kiln temperature survey and control
- Ceramic firing systems
- Diffusion furnaces
- Commercial 816 to 1600 °C (1500 to 3000 °F) ovens
- Liquid steady state metal temperature surveys in Aluminum, Tin, Copper, Copper-Silver alloys, Lithium
- Long term temperature indication for baths with acid salts and corrosive acids (Cyanide salts and molten borax excluded)
- Sulfur Recovery Unit, refractory protection
INSTALLATION
Compression fitting (½" NPT) with metal ferrule supplied with each sensor for immersion control and pressure tight mounting to any pre-drilled and tapped chamber wall. Insert threaded end and wrench tighten using hex head adjacent to threads. Insert thermocouple thru hex head cap to desired immersion depth. Tighten cap ¼ turn beyond finger tightness.
Note: Thermocouple head is supplied with necessary compression fitting for attachment to probe. Attach wires, tighten compression fittings on thermocouple head prior to process installation.
HOW TO ORDER
Specify Part Number T-5590 - "L" AE "A" giving variables such "L and "A" dimensions in inches.
Example: T-5590-30AE15, L = 30 in, A = 15 in.
STYLE T-50230 (U.S. Patent 3,625,775)
High Temperature Section ("L" - "A"):
- 19 mm (0.75 in) diameter cermet well to 430 mm (17 in) long on the standard design.
Support Section "A":
- 25.4 mm (1 in) diameter stainless steel support section 50 to 1500 mm long (2 to 60 in). Bonded to High Temperature Section.
Total Length "L":
178 to 1930mm (7 to 76 in)
The T-50230 thermocouple was developed as a more rugged version of the T-5590 thermocouple for the extreme environments found in sulfur recovery units and coal gasification reaction zones. It may be used in both oxidizing or reducing atmospheres and applications requiring resistance to H2S or SO2 that are destructive to platinum alloy and common base metal thermocouples. The Tungsten 5% Rhenium / Tungsten 26% Rhenium element (per ASTM E988 and E696) is protected against contamination or oxidation thru unique double insulation-double wall construction that selectively eliminates all but the beneficial diffusion of Hydrogen. Internal thermocouple junction reliability is maintained thru a new patented wire wrap/welding procedure to elminate the problems associated with thermal cycling welded junctions with refractory wires. Toxic gas leakage or bypass flow thru the connection head is eliminated as a result of the unique double concentric well approach and secondary wire seal at connection head end.
SELF-CONDUIT PERMANENT WIRING: For 870 °C (1600 °F) max, use ARi par number 125-2M-B(AEX)-24 AerOpak mineral insulated cable, 3.2 mm (0.125") diameter stainless steel sheath, compacted MgO insulation, AWG 24 compensating wires (Hoskins 405 amd 426 alloy). Cable ends require epoxy sealing to prevent moisture entry. May be formed by hand as a replacement for conduit-lead wire approach. Maximum length is 100 ft See Bulletin 6 for PTM-D2SS compression fittings used for mounting.
DIGITAL THERMOMETER MODEL 640: Field selectable Fluke DTI, ARi part number 640 AE DTI, 100 to 2000 °C or 200 to 4000 °F digital (0.56", 14 mm character size) indication from ARi type "AE" W5Re/W26Re thermocouples. Accuracy (to AE temp/EMF table) ± 6 °C with T/C break indication and 1° maximum error due to common or series mode AC signal injection. Power requirement: 115/230V, 50/60 Hz, 10 watts. Panel mounted.
HOW TO ORDER
PROBE: Specify T-50230-"L" AE "A" add "L"" and "A" in inches.
LEAD WIRE: Specify part number, length of each peice, and quantity.
DIGITAL THERMOMETER: Specify model number and quantity.
Please contact us for further information or any special requirements you may have.
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