Industrial Temperature Sensor Manufacturers

Temperature Sensor Range and Application Fit

We supply this category as three complementary families. The table below summarizes what each family handles and the configurations we normally build.

How We Select the Right Sensor

When your enquiry reaches us, the first decisions are not about price; they are about the thermal and mechanical duty. We use the working point, process medium, and required output to determine the sensing element, protection tube, and mounting style.

• Thermocouples use a welded junction of two different alloys to generate a millivolt signal. They are fast, robust, and operate at very high temperatures, making them the usual choice for furnaces, reactors, and exhaust systems.
• RTDs use the predictable resistance change of platinum to deliver excellent stability and repeatability. They are normally applied in the moderate temperature range where measurement quality is more important than extreme heat.
• Assembled thermocouples add industrial protection: ceramic or stainless steel tubes, connection heads, process threads, flanges, and armoured cable for long service life.

Accuracy is defined by the sensor type and class. Pt100 sensors can be ordered with Class A or B tolerance, while thermocouple accuracy is specified for each alloy. When a higher level of confidence is required, we calibrate the finished sensor and include the calibration data.

Engineering and Manufacturing Approach

From element to probe, our production route includes wire cutting and cleaning, precision welding of the measuring junction, insulation, protective-tube assembly, and explosion-proof treatment where required. For RTDs, we encapsulate the platinum element and configure the leads in a 3-wire or 4-wire arrangement to reduce lead resistance error.

Jiangsu Zhaolong Electrics Co., Ltd. operates a dedicated temperature sensor production base with an R&D team that supports normal and special specifications. We routinely build sensors based on customer drawings, samples, or existing part numbers, and we can design and install automatic temperature control cabinets, temperature control rooms, and remote monitoring temperature control systems for larger projects.

Quality Assurance and Testing

• ISO9001:2015 quality management and ISO14001 environmental management certification.
• In 2013 we obtained national explosion-proof production qualification for explosion-proof thermocouples and resistance temperature detectors.
• In-house test equipment includes a low-temperature test tank, noble-metal high-temperature test furnace, oil tank test furnace, and base metal test furnace.
• Calibration resolution reaches 0.01°C, with a calibration temperature range from -200 to +2000°C and temperature control within ±0.1°C.

Application Fit by Industry

Our temperature sensors are used in metallurgy, power generation, cement, petrochemical, natural gas, machinery, food processing, and new-energy equipment. Specialty designs include thermocouples for molten steel, copper, aluminum, and zinc solutions, salt furnace thermocouples, and high-precision long-life assemblies for cement plants and power plants.

Our anti-oxidation tungsten-rhenium thermocouples provide a lower-cost alternative to platinum-rhodium types while still reaching high measurement temperatures, and some designs meet military standards. For corrosive media, PTFE-sheathed sensors and PTFE tubes, plates, rods, gaskets, and custom-shaped parts offer resistance to strong acids, strong alkalis, and high temperatures.

Customization and Integration

Every sensor can be customized around your drawing or sample. We normally confirm probe diameter, immersion length, thermocouple type, RTD wire configuration, protection tube material, process connection, connection head, and output termination. For control loops, we can supply matching temperature transmitters and controllers, or connect our sensors to the instrumentation protocol already installed on your line.

Installation documentation, fitting guidance, and process drawings are provided with each order. Our after-sales service includes a one-year warranty against non-human damage, calibration service for operating sensors, and spare parts such as thermocouple connectors, heads, sleeves, compensation wire, and high-temperature cable.

Frequently Asked Questions

What temperature range can your sensors cover?

Depending on the sensing element and protection hardware, our range covers approximately -200°C to +2000°C. Pt100 RTDs are typically used from -200°C to 600°C, K-type thermocouples to around 1300°C, and platinum-rhodium or tungsten-rhenium thermocouples for higher temperatures.

How do I choose between a thermocouple and an RTD?

Use a thermocouple when the process is above about 600°C, response speed matters, or vibration is present. Use an RTD when you need stable, repeatable, and more linear measurement in the moderate temperature range. We can help finalize the choice once we know the working point and environment.

Can you match an existing sensor from a drawing or sample?

Yes. Customized production is our core business. Send a drawing, sample, or original part number, and we will confirm probe dimensions, thermocouple or RTD type, connection style, and material before manufacturing.

What certificates and test reports are available?

We operate under ISO9001:2015 and ISO14001, hold CE certification for relevant products, and obtained national explosion-proof production qualification for thermocouples and RTDs. Calibration certificates can be supplied with finished sensors.

Do you supply spare parts and after-sales service?

Yes. Our service package includes a one-year warranty against non-human damage, calibration service, and replacement parts such as thermocouple connectors, heads, sleeves, compensation wire, and high-temperature cable.

Can your sensors be integrated into an existing control system?

We regularly supply sensors with mV, Pt100, or 4-20 mA outputs that connect directly to PLCs, DCS systems, temperature transmitters, and temperature controllers. For complete solutions, we can also design and install automatic temperature control cabinets and remote monitoring systems.