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A Pyromation® MgO thermocouple assembly consists of a thermocouple element swaged in hard-packed, standard-purity (96%) Magnesium Oxide mineral insulation and encased in a metal sheath. Thermocouple sheaths have been fully annealed; they can be formed into many configurations, and can be bent into a radius of twice the size of its outer sheath. The tables found on this page and the following pages allow customer selection of standard thermocouple types, sheath diameters, mounting fittings and terminations. Custom built products are available upon request.
Unit of Measure

Specifications

Brands

N/A Pyromation®

Configuration Code

N/A Mg01

Thermocouple Types

N/A Code E - Single
Code J - Single
Code K - Single
Code T - Single
Code N - Single
Code EE - Duplex
Code JJ - Duplex
Code KK - Duplex
Code TT - Duplex
Code NN - Duplex
Code JJJ - Triplex
Code KKK - Triplex

Sheath Diameters

N/A Code 1 - 1/16 in (1/16" will be coiled unless otherwise specified for 36" and longer lengths.) Code 2 - 1/8
Code 3 - 3/16
Code 4 - 1/4
Code 6 - 3/8 in

Sheath Materials

N/A Code 3 - Alloy 600
Code 4 - 310 Stainless steel
Code 5 - 446 Stainless steel
Code 8 - 316 Stainless steel

Standard Available Type

N/A Code 3 - K, N
Code 4 - K
Code 5 - K (All sensors with 446SS sheaths must have an ungrounded measuring junction.)
Code 8 - E, J, K, T

'X' Dimension

N/A Insert three digit sheath length ("X" Dimension) in inches
Sheath lengths over 72" will be shipped in a coiled configuration unless otherwise specified.
Special Options1 N/A Code M - Special limits of error
Code H - High-Purity MgO Insulation (99.4% Pure)

Measuring Junctions

N/A Code G - Grounded Junction
Code U - Ungrounded Junction
Code E - Exposed Junction (Not available with 1/16" O.D)
Code S - Exposed Shielded Junction

Reduced Tip MgO Thermocouples

Normal Sheath Outer Diameter (OD)

N/A Code 88R48 - 1/2 in.
Code 68R38 - 3/8 in.
Code 48R28 - 1/4 in.

Tip Diameter

N/A Code 88R48 - 1/4 in.
Code 68R38 - 3/16 in.
Code 48R28 - 1/8 in.

Tip Length

N/A Code 88R48 - 1 (1/4) in.
Code 68R38 - 1 (1/4) in.
Code 48R28 - 1 (1/4) in.

Materials

N/A Code 88R48 - 316 Stainless Steel
Code 68R38 - 316 Stainless Steel
Code 48R28 - 316 Stainless Steel
  • 1 Use this only if options are desired.