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Tungsten-rhenium thermocouple Suppliers
About
Jiangsu Zhaolong Electrics Co., Ltd.
As China High Temperature Tungsten Rhenium Thermocouple Manufacturers and Tungsten-rhenium thermocouple Suppliers, Jiangsu Zhaolong Electrics Co., Ltd. is a regional high-tech enterprise and a production base of temperature sensors and temperature control instruments. We have jointly developed and produced a series of thermocouples (thermal resistances) and temperature control electronics with numerous R&D institutions and academies in Shanghai. These products are salable throughout the country and the world, offering an advantage in cost performance. Our products have a renowned reputation in the market and win customers' trust due to their excellent performance, attractive appearance, high reliability, advanced technology, and good cost performance.
With strong technical development team and patent results, we can undertake business for normal and special specifications, and can design & install various large-scale and small-scale automatic temperature control boxes and temperature control rooms and remote monitoring temperature control systems for customers.
Certificate Of Honor
News
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If you have ever compared two thermocouples on the same pipe and watched them disagree by a few degrees, the sensor tip probably was not the problem. More often, the answer sits at the other end of the loop, in the terminal block where the thermocouple wires meet the instrument. That connection point is the cold junct...
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If you have ever aimed an infrared thermometer at a stainless steel surface and received an unexpectedly low reading, emissivity is almost certainly the reason. Stainless steel is one of the most common materials in industrial plants, yet its emissivity ranges widely depending on how the surface is finished, how hot i...
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Resistance temperature detectors, or RTDs, are among the most reliable temperature sensors used in industrial automation. As a manufacturer that has designed and built temperature sensors and temperature control instruments for years, we often hear the same question from process engineers and maintenance teams: how do...
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Industry knowledge
As a Tungsten-rhenium thermocouple manufacturer and supplier, Jiangsu Zhaolong Electrics Co., Ltd. builds Type C and Type D assemblies for process temperatures that defeat base-metal and precious-metal sensors. Our tungsten-rhenium thermocouple range is a cost-effective high-temperature alternative to platinum-rhodium designs in reducing, inert, vacuum and protected-atmosphere processes.
We deliver standard catalog assemblies, special specification development, anti-oxidation construction and temperature control integration from one manufacturing base in Jiangsu, China. All units are part of our assembled thermocouple range and share common connection hardware with our other industrial temperature sensors.
Product range and positioning
Our tungsten-rhenium thermocouple line centers on WRe5/26 and WRe3/25 combinations, corresponding to Type C and Type D calibrations. The range includes high-temperature furnace probes and industrial needle probes for localized measurement.
| Model / designation | Thermocouple type | Temperature scope | Typical fitted form |
|---|---|---|---|
| 2000°C High-Temperature Tungsten-Rhenium Thermocouple WRe5/26 WRe3/25 | Type C and Type D | 2000°C-class high-temperature processes | Refractory-protected assembly for vacuum, inert or reducing furnaces |
| Industrial Type C Needle High-Temperature Probe WRe5/26 WRe3/25 | Type C | 1200°C-class industrial measurement | Needle-shaped probe for fast localized measurement in heat-treatment and testing applications |
| Custom anti-oxidation tungsten-rhenium assemblies | Type C or Type D | Application-defined based on process and atmosphere | Protective tube, sealing and mounting configured to the installation |
Application fit by industry
We developed tungsten-rhenium thermocouples for demanding environments where standard metal-sheathed sensors have a short service life. These include molten metal and salt furnace measurement, vacuum heat treatment, aerospace material testing and high-temperature chemical processes.
- Metallurgy and foundries: sensors for molten steel, copper, aluminum and zinc, plus salt furnace temperature monitoring.
- Vacuum and atmosphere heat treatment: furnace zoning and load measurement in inert or reducing atmospheres.
- Aerospace and research: engine and material tests requiring stable readings at very high temperature.
- Cement and power plants: high-precision, long-life designs for combustion and process zones.
- Chemical and petrochemical: high-temperature reactors and transfer lines where thermal stability is critical.
Construction and material considerations
Tungsten-rhenium wire provides high thermoelectric output and mechanical strength at elevated temperature, but it becomes oxidation-sensitive in air. Our anti-oxidation tungsten-rhenium thermocouple is built as a lower-cost replacement for platinum-rhodium thermocouple applications, and some versions are produced to military standards.
- Element combination: WRe5/26 (Type C) and WRe3/25 (Type D) matched wire pairs with controlled composition.
- Protection tube: selected by temperature, atmosphere and thermal shock requirements to keep the element isolated from the process.
- Insulation and sealing: ceramic insulators and sealed terminal construction prevent atmosphere ingress into the measuring junction.
- Mounting method: thread, flange, compression or custom mechanical fixing matched to the furnace or vessel wall.
Configuration options and control integration
We configure each tungsten-rhenium thermocouple around the installation point and the receiving instrumentation. The same probe can be supplied as a bare element, restricted probe, complete assembly with connection head, or with a head-mounted temperature transmitter for direct 4-20 mA or digital input.
- Overall length, insertion depth, mounting thread or flange
- Protection tube material, outer diameter and wall thickness
- Connection head type, terminal blocks and electrical entry
- Compensation wire, extension cable or head-mounted transmitter
- Interface to temperature controllers, PLCs, SCADA or remote monitoring systems
For larger projects, we design and install automatic temperature control boxes, temperature control rooms and remote monitoring temperature control systems as a complete supply package.
Accuracy, testing and calibration
Every thermocouple passes factory testing before delivery, and our laboratory equipment includes noble-metal high-temperature test furnaces and low-temperature test tanks. Calibration support covers a temperature range from -200°C to +2000°C, control within ±0.1°C, and resolution to 0.01°C.
- GB/T 19001-2016 / ISO9001:2015 quality system certification
- CE certification for applicable products
- National explosion-proof production qualification for explosion-proof thermocouples and RTDs
- 12-month warranty covering non-human damage
- Calibration services, spare parts supply and replacement guidance
Information we use to configure your solution
To prepare a configuration and quotation, we work from the following project data:
- Normal and maximum operating temperature, including thermal cycling conditions
- Process atmosphere: oxidizing, reducing, inert, vacuum; presence of hydrogen, sulfur or moisture
- Insertion depth, mounting geometry and vessel or furnace wall construction
- Required response time, protection tube material and anti-oxidation level
- Accuracy class, calibration certificate requirement and acceptance test criteria
- Output signal: bare element, compensation wire, 4-20 mA transmitter or digital protocol
- Environmental factors such as vibration, abrasion, molten metal splash or corrosive media
- Quantity, delivery schedule and documentation package
Frequently asked questions
What temperature range do tungsten-rhenium thermocouples cover?
Our Type C and Type D assemblies are supplied for high-temperature furnace service up to the 2000°C class, while the industrial needle probe is rated for 1200°C-class processes. The practical limit depends on atmosphere, protection tube material and thermal cycling.
Can tungsten-rhenium replace platinum-rhodium thermocouples?
In many high-temperature processes, yes. Our anti-oxidation tungsten-rhenium design is a lower-cost alternative to platinum-rhodium thermocouples, and we confirm atmosphere compatibility and expected service life before recommending substitution.
Why does a tungsten-rhenium thermocouple need anti-oxidation protection?
Tungsten-rhenium alloys are stable in inert, reducing or vacuum atmospheres, but oxidize in air at elevated temperature. We therefore fit protective tubes, seal the assembly or use anti-oxidation construction depending on the process environment.
Can you supply a complete assembled thermocouple with transmitter?
Yes. We supply bare elements and complete assemblies with connection heads, protection tubes, mounting hardware and head-mounted transmitters for direct connection to control systems.
What documentation is available with the sensors?
We provide test and calibration certificates as specified, material traceability information and inspection records. For explosion-proof thermocouples and RTDs, we hold national production qualification certificates.
PRODUCT
CONTACT INFO.
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+86-181 1593 0076 (Amy)
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+86 (0)523-8376 1478
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[email protected]
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No. 80, Chang'an Road, Dainan Town, Xinghua City, Jiangsu, China
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