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ARi has developed a complete line of metallic sheath ceramic insulated thermocouple cable for operation in the range of 1100 °C (2012 °F) to 2200 °C (3992 °F). This is a high quality product employing clean room techniques in manufacturing and inspection. It is useable either for fabrication of high temperature thermocouples or leadwire cable for thermocouples.
Electrical Characteristics
INSULATION RESISTANCE | Room temperature insulation resistance will be a minimum of 1000 megohms at 50 VDC for 1.0-1.5 mm O.D. and 500 VDC for 3.18-6.35 mm O.D. Insulation resistance at 1000 °C will be a minimum of 6100 ohms-meter at 6 VDC. Proper bending will not cause a loss of insulation resistance. |
WIRE HOMOGENITY | Will be such that a sharp gradient of 800 °C will produce not more than a ± 0.1 millivolt output. |
Physical Characteristics
FORMABILITY: Forming is limited to a minimum inside bend radius of five (5) sheath diameters for Inconel 600 and Platinum alloys and 10 diameter for Tantalum. | |
PRESSURE | Can withstand external pressure of 3500 Kg/cm² at room temperature. |
FABRICATION | AerOpak® can be GTAW welded and brazed without changing insulation resistance. Welding on Tantalum must be done in either vacuum or inert atmosphere. |
Random lengths will be provided unless requested otherwise. Specific lengths are available in all standard products, up to the maximum single length indicated in the Tables. Length tolerance: ± 15 cm. | |
Each section of AerOpak® is moisture-sealed at both ends with a suitable resin. When ordering, allow 2.5 cm to be removed from each end. Both ends can be provided with a storage seal (seal welding) in place of the temporary resin seal. | |
AerOpak® in straight lengths will have a curvature not exceeding six (6) mm in one (1) meter as measured against a straight edge lying free. | |
DIAMETER | Shall be within ± 0.05mm of nominal. Ovality will not exceed 0.003mm. |
INTEGRITY | There shall be no porosity, inclusions, pit or scratches which exceed 10% wall thickness, or 0.003 mm (whichever is greater). |
Specify by part number.
The part number is defined per the following:
EXAMPLE
125- 2N – BR-30
125 | – | 2 | N | – | B | R | – | 30 |
(1) |
| (2) | (3) |
| (4) | (5) |
| (6) |
(1) Sheath Diameter = 0.125 inch O.D.
(2) Number of Conductors = 2 wires
(3) Insulation/Purity
N = MgO / 99.4% Min Purity
(4) Sheath Material = Inconel 600
(5) Wire Material = Calibration R
(6) Wire Gage
30 = 30 AWG (0.010 inch)
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 | Maximum Usage Temperature | Melting Temperature | Environment | Minimum Bend Radius | ||
°F | °C | °F | °C | ||||
Inconel 600* | B |
| 1175 |
| 1345 | Inert, Vacuum, Oxidizing | 5x Diameter |
Platinum 10% Rhodium | AH |
| 1550 |
| 1850 | Inert, Oxidizing | 5x Diameter |
Tantalum | N |
| 2200 |
| 2995 | Inert, Vacuum | 10x Diameter |
310 ST/ST | D |
| 1050 |
|
| Inert, Vacuum, Oxidizing | 5x Diameter |
Niobium 1% Zirconium | AV |
| 2200 |
| 2495 | Inert, Vacuum | 10x Diameter |
*Registered U.S. Trademark, International Nickel Corp.
Thermocouple Wire | |||
Material | ASTM E-230-81 Symbol | ARi Symbol | Calibration Tolerance Limits Of Error |
Platinum 13% Rhodium vs. Platinum | R | R | ± 1.5 °C from 0 to 600 °C |
± 25% from 600 to 1450 °C | |||
Platinum 10% Rhodium vs. Platinum | S | S |
|
Platinum 30% Rhodium vs. Platinum 6% Rhodium | B | B | ± 0.5% from 800 to 1700 °C |
Tungsten 5% Rhenium vs. Tungsten 36% Rhenium | — | AE | ± 4.44 °C from 0 to 427 °C |
± 1% from 427 to 2315 °C | |||