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Thermocouple compensating wire alloy wire Manufacturers
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  • Thermocouple compensating wire alloy wire
  • Thermocouple compensating wire alloy wire

Thermocouple compensating wire alloy wire

Product Introduction
Alloy wire for thermocouple compensating cables is a core conductive material for industrial temperature measurement systems, used as the alloy conductor for manufacturing compensating cables. Made from nickel, chromium, silicon, copper and other metals with precise proportioning, it features low thermoelectric drift, high oxidation resistance, acid and alkali corrosion resistance, good flexibility and weldability. It can accurately transmit thermocouple thermoelectromotive force, compensate cold-end temperature errors, and ensure stable temperature measurement.

Applications & Instructions
1. Power Industry
Temperature monitoring and signal transmission for boilers, steam turbines, generator sets and other equipment in thermal power plants.

2. Petrochemical Industry
High, medium and low temperature measurement systems for oil refining units, reaction kettles, heating furnaces, pipelines and storage tanks.

3. Metallurgy & Steel
Temperature detection under high-temperature working conditions such as blast furnaces, converters, annealing furnaces, heat treatment furnaces and continuous casting lines.

4. Building Materials & Cement
Temperature signal transmission for cement rotary kilns, preheaters, kiln inlet / kiln ends and various industrial kilns.

5. Machinery Manufacturing
Temperature measurement for heat treatment equipment, forging, casting, welding equipment, industrial ovens and drying equipment.

6. HVAC & Automation
Temperature collection for central air conditioning, industrial heat exchange equipment, DCS control systems and instrument control cabinets.

Instructions
Connect one end firmly to the thermocouple cold end, and the other end to temperature instruments, transmitters or acquisition modules. Connections should be crimped, welded or fixed with special terminals to ensure good contact.

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Specification FAQ
EMF of compensating wire and the tolerance
Thermo couple No.indexing Compensating And extension Wire type Usage Classif ication Messuring junction temperture ℃ Standard EMF Value μV Precisiongrade Generallevel

Tolerance μV

 Thermal EMF range μV Tolerance μV Thermal EMF range μV
S or R SC or RC G 100 646 ±30 616~676 ±60 586~706
H 100 646 — — ±60 586~706
200 1441 — — ±60 1381~1501
K KX, KCA or KCB G -25 -968 ±44 -924~-1012 ±88 -880~-1056
100 4096 ±44 4052~4140 ±88 4008~4184
H -25 -968 ±44 -924~-1012 ±88 -880~-1056
100 4096 ±44 4052~4140 ±88 4008~4184
200 8138 — — ±88 8050~8226
N NX or NC G -25 -646 ±43 -603~-689 ±86 -560~-732
100 2774 ±43 2731~2817 ±86 2688~2860
H -25 -646 ±43 -603~-689 ±86 -560~-732
100 2774 ±43 2731~2817 ±86 2688~2860
200 5913 — — ±86 5827~5999
E EX G -25 -1432 ±81 -1351~-1513 ±138 -1294~-1570
100 6319 ±81 6238~6400 ±138 6181~6457
H -25 -1432 ±81 -1351~-1513 ±138 -1294~-1570
100 6319 ±81 6238~6400 ±138 6181~6457
200 13421 — — ±138 13283~13559
J JX G -25 -1239 ±62 -1177~-1301 ±123 -1116~-1362
100 5269 ±62 5207~5331 ±123 5146~5392
H -25 -1239 ±62 -1177~-1301 ±123 -1116~-1362
100 5269 ±62 5207~5331 ±123 5146~5392
200 10779 — — ±123 10656~10902
T TX G -25 -940 ±30 -910~-970 ±60 -850~-1000
100 4279 ±30 4249~4309 ±60 4189~4339
H -25 -940 ±48 -892~-988 ±90 -850~-1030
100 4279 ±48 4231~4327 ±90 4189~4369
200 9288 — — ±90 9198~9378

Compensating wire type Reciprocating resistanceat 20℃ Ω/m (less than)
0.2mm² 0.5mm² 1.0mm² 1.5mm² 2.5mm²
SC or RC 0.25 0.1 0.05 0.03 0.02
KCA 3.5 1.4 0.7 0.47 0.28
KCB 2.6 1.04 0.52 0.35 0.21
KX 5.5 2.2 1.1 0.73 0.44
EX 6.25 2.5 1.25 0.83 0.5
JX 3.25 1.3 0.65 0.43 0.26
TX 2.6 1.04 0.52 0.35 0.21
NC 3.75 1.5 0.75 0.5 0.3
NX 7.15 2.86 1.43 0.95 0.57

Q1: Can compensating alloy wires of different types be mixed?
A1: No. Compensating alloy wires of K, E, J, T, N and other types have different compositions and thermoelectric characteristics. Mixing will cause serious temperature measurement errors. They must be matched with the corresponding type of thermocouple.

Q2: What happens if positive and negative poles are reversed?
A2: It will cause reverse superposition of thermoelectromotive force, resulting in seriously low or fluctuating temperature display. Long-term reversal may also affect the stability of instrument readings. The positive and negative poles must be distinguished by color codes during wiring.

Q3: Can compensating alloy wire be used as ordinary power wire?
A3: No. It is an alloy material designed specifically for thermoelectric signal transmission. Its conductivity and current-carrying capacity are different from ordinary wires. It is only suitable for temperature signal circuits and cannot be used for power supply lines.

Q4: What is the effect of excessively high ambient temperature?
A4: Exceeding the allowable operating temperature (usually ≤200°C) will cause oxidation of the alloy wire, drift of thermoelectric characteristics, insulation aging, and even direct failure, making temperature measurement accuracy unguaranteed.

Q5: Can the alloy wire still be used with slight surface oxidation?
A5: Slight oxidation generally does not affect use. If serious oxidation, blackening, embrittlement or peeling occurs, it will cause poor contact and unstable signals. Replacement is recommended in time.

Related Product

Xinguo Group Co., Ltd.
ABOUT US Xinguo Group Co., Ltd.
Xinguo Group Co., Ltd. is a high-tech enterprise with subsidiaries including Anhui Xinguo Instrument Co., Ltd., Anhui Xinguo Alloy Co., Ltd., Anhui Xinguo Cable Co., Ltd. and Anhui Xinguo Precious Metals Co., Ltd. Founded in 1997, the Group is located in Tianchang City, Anhui Province — a National Civilized City. It has a registered capital of 118 million RMB, covers a land area of over 150 mu and a building area of 60,000 square meters. The company currently has more than 300 employees, among whom over 50 are professional and technical personnel including senior engineers, engineers and assistant engineers.
The Group is a China Custom Thermocouple compensating wire alloy wire Manufacturers and Thermocouple compensating wire alloy wire Supplier, mainly engages in the R&D, production and sales of temperature instruments, pressure instruments, level instruments, flow instruments and digital display instruments. Its product portfolio also encompasses power cables, control cables, compensation cables, computer cables, signal cables, MI heating cables, mineral insulated cables, electric heat tracing tapes, cable trays and accessories, high and low voltage distribution equipment, complete automation control systems, instrument valves, pipeline valves and fittings, glass instruments and laboratory equipment. We also supply platinum-rhodium wires, precision alloys and complete mechanical equipment, while providing supporting processing, manufacturing, sales and technical services. Additionally, we deal in professional instrument materials, alloy materials and precious metals. Our products are widely applied in power, petroleum, chemical, metallurgy, building materials, machinery, food, aerospace, new energy and other industrial sectors, as well as scientific research and education fields.
Anhui Xinguo Alloy Co., Ltd. is dedicated to manufacturing a full range of precision alloy materials and serves as a council member of the Instrument Materials Branch of China Instrument & Control Society. Its flagship products cover thermocouple alloy wires (K, N, E, J, T types), thermocouple compensation alloy wires (KX, EX, NX, JX, TX, KCA, KCB, NC, SC), high-resistance heating alloys, precision resistance alloys, heating resistance alloys, pure nickel wires, manganese-copper alloys and Monel alloys. These products are extensively used in aviation, petroleum, chemical engineering, machinery manufacturing, power and energy industries.
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