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Armored thermistor cable

An armored thermal resistance cable is a solid whole made of a stainless steel protective tube, magnesium oxide insulation powder, and pure nickel wire or pure silver wire, combined and compacted by a mold. An armored thermal resistance cable made of pure nickel wire is commonly known as armored pure nickelwire). It has the advantages of voltage resistance, earthquake resistance, flexibility, miniaturization, and fast thermal response time. It is a leading material for manufacturing armored thermal resistance.  

Product advantages:
1. Fast thermal response speed, precise and stable temperature measurement
Mineral insulation has good thermal conductivity, low thermal inertia, rapid temperature signal transmission, small temperature measurement error, and good repeatability of long-term work measurement data.
2. Excellent mechanical performance, vibration resistance, impact resistance, and bendability
The metal armored shell structure is sturdy, resistant to vibration and external compression, and can be moderately bent, suitable for installation and use in narrow and complex working spaces.
3. Strong sealing and wide environmental adaptability
The dense armor structure is moisture-proof and dustproof, resistant to medium erosion, and has reliable insulation. It can operate stably for a long time in harsh industrial environments such as high and low temperatures, humid dust, etc., with a long service life.           

 Selling point:
1. Rapid temperature response and good data repeatability
The mineral insulation structure has low thermal inertia, fast temperature sensing, small measurement deviation, and stable and reliable temperature measurement data during long-term operation.
2. Anti-vibration and bending resistance, flexible on-site installation
Metal armor protection, shock and vibration resistance, bendable wiring, and easy installation even in small equipment spaces.
3. High protection level and wide applicability to various working conditions
The overall sealing is moisture-proof and dustproof, with excellent insulation performance, and can be used for a long time in high- and low-temperature, humid, and dusty industrial environments.

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FAQ Performance Specifications

Q1: Can armored thermistor cables be bent for use?
A: They can be bent moderately, with a minimum bending radius generally of 5- 7 times the outer diameter of the sheath. It is not recommended to bend within 150mm of the temperature-measuring end to prevent damage and breakage of internal components, and it is suitable for wiring and installation in narrow spaces.

Q2: What is the temperature measurement range of armored thermistor cables?
A: The temperature measurement range of conventional Pt100 armored thermal resistance is -200~600 ℃, and the temperature tolerance of different sheath materials varies. Confirm the sheath material under high-temperature conditions. If it is out of range, the measurement accuracy and service life will be affected.

Q3: Which wiring method is recommended for long-distance measurement?
A: Short distance can use three wire system; Prioritize the four wire system when measuring long cables to reduce measurement errors caused by lead resistance; It is recommended to use products with shielding structures and single point grounding of the shielding layer for strong interference on site.

Q4: Under what circumstances will temperature display jump and become unstable?
A: Mostly due to loose wiring, poor shielding grounding, on-site electromagnetic interference, or internal insulation moisture. The wiring terminals should be checked, shielding grounding should be done, and a fixed installation should be done for vibration conditions. If abnormalities persist, it is recommended to test the insulation performance.

An armored thermal resistance cable is a solid, compacted assembly composed of a stainless steel protective tube (1), magnesium oxide insulating powder (2), pure nickel wire or pure silver wire (3), compacted together via mould pressing. (The armored thermal resistance cable made of pure nickel wire is commonly known as armored pure nickel wire.) It features high voltage resistance, shock resistance, flexibility, compact size, and fast thermal response, serving as the lead wire material for manufacturing armored thermal resistors.
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1. Model specifications and technical parameters are listed in Table 2-1

Name Model Specification (mm) Conductor
Sheath Material Core Wire Material Resistivity (μΩ·cm) Number of Cores Max Resistance Difference Between Core Wires (Ω/m, 20°C)
Armored Thermal Resistance Nickel-Core Cable KNI φ2, φ3, φ4, φ5, φ6, φ8 1Cr18Ni9Ti, 304, 316L Ni (Nickel) 68.4 2; 3; 4; 6 0.006
Armored Thermal Resistance Silver-Core Cable KAg φ2, φ3, φ4, φ5, φ6, φ8 1Cr18Ni9Ti, 304, 316L Ag (Silver) 1.59 2; 3; 4; 6 0.002

Note: Other core wire materials, outer diameters, and products with more cores are available upon mutual agreement between the supplier and the customer.

2. Model Numbering System for Armored Resistance Temperature Detector Cables

KNi 4 316L φ4.0
KNi Model KNi, KAg
4 Number of Cores
2-core, 3-core, 4-core, 6-core
316L Sheath Material
1Cr18Ni9Ti, 304, 321, 316L
φ4.0 Cable Outer Diameter
φ2.0 ~ φ8.0

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 Armored thermistor cable Manufacturers and Armored thermistor cable 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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