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Our standard mineral insulated (MI) thermocouple cable starts with fully annealed and cleaned tubing, high-purity (99.4% minimum) MgO insulation material and thermocouple wire that meet per ASTM E-230 Special Limits of Error. In the ARi production process, precise dimensionality and uniform insulation maintained throughout the multiple reduction drawing and annealing process, assuring the end product integrity. All commercially available thermocouple, conductor and heater wire materials are offered as standards from ARi.
The Quality Standard:
Useable under sever conditions that can destroy other types of thermocouple cable.Withstands temperatures up to metal melting points.Withstands corrosive conditions that are limited only by the choice of the outer sheath material.Can be formed around a solid mandrel that is twice the sheath diameter without loss of integrity. Can be welded, brazed or soldered to the other metals when proper techniques are used.Standardized and shipped from ARi stock.
1. Specify by description.Example: 1/16 inch Inconel 600 Sheath, Type K mineral insulated cable.
2. Specify by part number.The part number is defined per the following:EXAMPLE062 – 2N – BKS
062 | – | 2 | N | – | B | K | S |
(1) |
| (2) | (3) |
| (4) | (5) | (6) |
(1) Sheath Diameter = 0.062 inch O.D.
(2) Number of Conductors = 2 wires
(3) Insulation/Purity
N = MgO / 99.4% Min Purity
M = MgO / 98.0% Min Purity
(4) Sheath Material = Inconel 600
(5) Wire Material = Calibration K
(6) Calibration Accuracy
S = Special Limits of Error, Class 1
Shipping Coil Sizes And Weight | |||||
Sheath O.D. | Coil O.D. | Approximate Weight at 100 ft (30.48 meters) | |||
inch | mm | inch | mm | lbs | kg |
0.020 | 0.5 | 20-22 | 508-559 | 0.2 | 0.09 |
0.040 | 1.0 | 0.3 | 0.14 | ||
0.062 | 1.6 | 30 | 762 | 0.9 | 0.41 |
0.120 | 3.0 | 2.5 | 1.13 | ||
0.125 | 3.2 | 3.3 | 1.50 | ||
0.188 | 4.8 | 7.0 | 3.18 | ||
0.236 | 6.0 | 42 | 1067 | 10.8 | 4.90 |
0.250 | 6.4 | 12.3 | 5.58 | ||
0.313 | 8.0 | 19.5 | 8.85 | ||
0.375 | 9.5 | 27.0 | 12.25 | ||
0.500 | 12.7 | 42-48 | 1067-1220 | 50.0 | 22.68 |
0.625 | 15.9 | Shipped straight , 20 ft maximum lengths | Shipped straight , 6.1 meters maximum lengths | 75.0 | 34.02 |
0.750 | 19.0 | 112.5 | 51.03 | ||
Standard Sheath Material | |||||
Sheath Material | ARi Symbol | Melting Temperature °F °C | Maximum Temperature In Air °F °C | ||
AISI 304 ST/ST | A | 2550 | 1400 | 1650 | 900 |
AISI 310 ST/ST | D | 2550 | 1400 | 2000 | 1090 |
AISI 316 ST/ST | C | 2500 | 1370 | 1650 | 900 |
AISI 347 ST/ST | F | 2550 | 1400 | 1650 | 900 |
AISI 446 ST/ST | AG | 2600 | 1430 | 2000 | 1090 |
INCONEL 600 | B* | 2470 | 1350 | 2000 | 1090 |
HASTELLOY X | V | 2300 | 1260 | 2200 | 1200 |
*Not recommended for use in sulfur atmosphere.
Standard Sheath Diameters | ||||||||||||
Description | Unit Of Measurement | ARi Symbol | ||||||||||
L | A | B | D | E | F | G | I | K | P | R | ||
Sheath Diameter | inches | 0.020 | 0.040 | 0.062 | 0.125 | 0.188 | 0.250 | 0.313 | 0.375 | 0.500 | 0.625 | 0.750 |
mm | 0.50 | 1.00 | 1.67 | 3.17 | 4.75 | 6.35 | 8.00 | 9.52 | 12.70 | 15.90 | 19.10 | |
Wire Diameter | inches | 0.004 | 0.006 | 0.010 | 0.020 | 0.032 | 0.040 | 0.051 | 0.064 | 0.091 | 0.114 | 0.120 |
mm | 0.10 | 0.15 | 0.25 | 0.50 | 0.85 | 1.00 | 1.45 | 1.63 | 2.31 | 2.90 | 3.05 | |
Maximum Length | feet | 30 | 200 | 290 | 290 | 135 | 81 | 45 | 30 | 30 | 20 | 13 |
meters | 9 | 61 | 88 | 88 | 41 | 25 | 14 | 9 | 9.1 | 6.1 | 4.0 | |
Wire Calibration (Special Limits Of Error) | ||
Calibration Type | ARi Symbol | ASTM E-230 Symbol |
Chromel P-Alumel | KS | K |
Iron-Constantan | JS | J |
Chromel P-Constantan | ES | E |
Copper-Constantan | TS | T |
Nicrosil-Nisil | NS | N |