High temperature wire Manufacturers

Jiangsu Zhaolong Electrics Co., Ltd. is a China high temperature wire manufacturer with a production base dedicated to temperature sensors and temperature control instruments. Our High temperature wire is engineered for continuous, accurate transmission of thermocouple and RTD signals in furnace, kiln, power generation, and chemical processing environments. Because we also make the sensor and the control instruments around the wire, every cable configuration is treated as part of the complete measurement chain.

High Temperature Wire Range and Construction

The range covers conductor and insulation constructions for thermocouple extension, sensor lead-in, and connection to transmitters and control panels. Selection starts with the thermocouple type and the temperature profile along the route. We supply single-pair and multi-core configurations, color-coded insulation, and can customize length, termination, shielding, and protective covering. Orders can be cut to length for a single repair or spooled for a complete furnace, kiln, or power plant project. We undertake normal and special specification work from our China factory.

• Conductor alloys are selected for stable thermoelectric output at high temperature, preventing an unwanted secondary junction between the sensing point and the instrument.
• Insulation systems are chosen for heat, chemical exposure, mechanical wear, and moisture resistance in industrial environments.
• Color-coded construction simplifies field wiring and maintenance, reducing the chance of reversed or wrong connections.
• Reinforced mechanical design protects against bending, twisting, vibration, and accidental contact during installation and operation.

Application Fit by Industry

High temperature wire is used wherever the measurement point, cable route, or terminal zone is too hot for standard PVC or PE insulated cable. The table below maps the wire role to typical process environments.

Critical Specifications for Cable Selection

We confirm the following parameters before preparing a proposal:

• Sensor type and calibration: K, N, S, R, B, tungsten-rhenium, or RTD. The conductor alloy must match the thermocouple type so the millivolt signal is not distorted.
• Temperature rating: Continuous and peak ambient temperature along the route, not only the process temperature at the sensor.
• Conductor construction: Number of cores, pair configuration, conductor cross-section, and whether a shield or armor layer is needed.
• Termination: Bare leads, lugs, thermocouple connector, terminal block, or direct connection to a transmitter input.
• Environmental factors: Moisture, chemicals, vibration, mechanical impact, and hazardous area classification.

The wire itself does not determine the accuracy class of the loop, but incorrect alloy, low insulation resistance, or poor termination can create drift and intermittent readings. By matching the conductor to the sensor calibration and specifying insulation for the full temperature profile, we help maintain the accuracy of the assembled thermocouple system.

Sensor-to-Control Integration

High temperature wire is one link in a loop that starts at the assembled thermocouple and ends at a temperature transmitter, controller, or DCS input. We match the wire to the sensor type and the input device so the complete chain is electrically consistent. For long routes through normal plant temperature areas, thermocouple compensation wire may be the correct choice, while high temperature wire is used closer to the process or where ambient heat is high.

Beyond cable supply, we design and install automatic temperature control boxes, temperature control rooms, and remote monitoring temperature control systems. This allows us to coordinate the Temperature sensor, wiring, transmitter, and controller as one project package.

Quality Assurance, Calibration and Acceptance

Production follows a supervised process from conductor cleaning and insulation to final inspection and packaging. Our laboratory is equipped with precious-metal high-temperature test furnaces, low-temperature test tanks, and oil tank test furnaces. Calibration for thermocouples and RTDs covers -200 °C to +2000 °C with resolution up to 0.01 °C and temperature difference control within ±0.1 °C.

Our quality system is certified to GB/T 19001-2016/ISO9001:2015, relevant products carry CE certification, and explosion-proof thermocouples and RTD assemblies hold national explosion-proof production qualification certificates. Products are covered by a 12-month warranty against non-human damage, and spare wire and replacement parts are available to reduce downtime.

Installation, Maintenance and Serviceability

Installation starts with confirming that the insulation class matches the highest expected ambient temperature, not just the process setpoint. We recommend protecting the wire from direct flame impingement, using heat shields or ceramic sleeves at wall penetrations, and allowing extra length near the sensor for re-termination. In hazardous areas, cable entry and conductor separation must preserve the protection concept of the enclosure.

Periodic inspection should check insulation condition, moisture ingress, and tightness of connections. Because the wire is color-coded, field troubleshooting is faster and safer. Replacement lengths can be prepared from the same specification used for the original order. For multi-point projects, each cable can be labeled with loop number and sensor type to simplify commissioning and future maintenance.

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High Temperature Wire FAQs