Your Professional Resistance Temperature Detector Supplier

Jiangsu Zhaolong Electric Co., Ltd., located on Zhangguo Chang'an Road, Dainan Town, Xinghua City, Taizhou City, Jiangsu Province, is a high-tech enterprise specializing in the production and R&D of switches, temperature sensors, and temperature control instruments.It has applications across the entire spectrum, including steel, chemical, various machinery and equipment, environmental protection, petroleum, industrial furnaces, ovens, heating and refrigeration equipment, etc.

 

 
  • Armored Resistance Temperature Detector
    The product stands out as a robust, integrated temperature sensor designed for challenging industrial applications. Featuring a fully sealed structure with a metal sheath, it combines thermal...
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  • Explosion-proof RTD
    The product is a critical safety component designed specifically for temperature monitoring in flammable or explosive atmospheres. By incorporating robust protective housings and advanced sealing...
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  • Prefabricated RTD
    The product offers a versatile and economical solution for temperature measurement in non-hazardous, general industrial environments. Its modular design, consisting of a separable sensing element,...
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  • Wire Resistance Thermometer
    The product is the ideal temperature sensor for applications where space is limited and routing is complex. Integrating a miniature sensing element directly with a flexible, insulated cable, it...
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  • Surface Thermal Resistance
    The Surface thermal resistance is specifically designed to deliver accurate and responsive temperature readings from solid surfaces without the need for immersion or insertion. Its primary...
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Why Choose Us

Our Certificate

Our products are ISO9001:2008 and CE certified, ensuring reliable quality and compliance with international standards.

Global Market Support

We actively serve both domestic and international customers through efficient logistics, e-commerce, and professional export services.

Advanced Production Equipment

Equipped with advanced manufacturing and testing equipment, including laser welding machines, CNC lathes, automatic thermocouple production lines, oscilloscopes, semiconductor testers, and wave soldering lines, we ensure high production efficiency, precise manufacturing, and strict quality control throughout the entire production process.

Fast Response & Reliable Support

We offer one-on-one professional consultation to provide tailored solutions based on customer requirements. During production, we strictly control quality and delivery schedules while providing real-time order updates. Our comprehensive after-sales support ensures fast response times and long-term reliable cooperation.

 

Types of Resistance Temperature Detector
Wire-Wound RTDs
Wire-wound RTDs are the most common type and feature a thin wire wound around a ceramic core. In the wire-wound RTD design, the sensing element consists of a small coil of fine wire, usually made of platinum. This coil can be housed inside a ceramic or glass tube (the most common setup) or wrapped around the exterior of a ceramic or glass casing.
Thin-Film RTDs
Thin-film RTDs have a platinum layer deposited on a ceramic substrate. They are more compact and cost-effective than wire-wound sensors and are often used in applications where space is limited. However, they are typically less accurate than wire-wound RTDs, particularly over a wide temperature range. This RTD type is favored for its durability, reliability, and affordability.
Coiled RTDs
This RTD element is typically constructed from platinum wire. Ultra-thin platinum wire (around 20 microns) is coiled and placed inside ceramic insulators with double holes. Extension leads are spot-welded to the ends of the platinum wire, and the entire assembly is then secured with cement. While these RTDs offer the highest accuracy, they are not ideal for use in harsh environments.

 

Advantages of Resistance Temperature Detector

 

1

High Accuracy

RTDs offer superior accuracy compared to thermocouples and thermistors.

2

Stability

RTDs are stable over time, offering consistent performance and reliable results.

3

Wide Temperature Range

They are capable of measuring temperatures from -200°C to 850°C, though typical ranges are between -50°C and 650°C.

4

Linear Response

The linear resistance-temperature relationship makes it easier to calculate temperature over a wide range.

 

Armored Resistance Temperature Detector

 

How Resistance Temperature Detector Work

As a temperature sensor, RTDs measure the predictable change in electrical resistance of the material while the temperature changes. The sensor here tracks temperature by measuring the change in resistance in relation to the surrounding temperature, acting as a very accurate and responsive sensor. Typical RTD response time is fast, 0.5 seconds to 5 seconds. The most common RTDs can be found as 100 ohm or 1000 ohm platinum resistance thermometers.

 

Applications of Resistance Temperature Detector
 

Industrial Process Control
In industries such as petrochemical, pharmaceutical, and food production, RTDs are essential for monitoring temperature in manufacturing processes. Maintaining precise temperature control is critical to ensure product quality and safety.

 

HVAC Systems
RTDs are commonly used in HVAC (Heating, Ventilation, and Air Conditioning) systems to monitor and regulate temperature in commercial and residential buildings. Their accuracy ensures that indoor climates remain within desirable ranges.

 

Aerospace
RTDs are used in aerospace for critical temperature measurements in engines, avionics, and various components exposed to extreme temperatures. Their ability to operate reliably in harsh environments makes them indispensable in this field.

 

Medical Devices
In the healthcare industry, precise temperature measurement is vital. RTDs are used in medical devices like incubators, sterilizers, and diagnostic equipment, ensuring patient safety and the accurate functioning of medical devices.

 

Energy Sector
RTDs help monitor and control temperatures in power plants and nuclear reactors. Their role is crucial for optimizing energy production, maintaining equipment safety, and ensuring environmental standards are met.

 

Food and Beverage Industry
The food industry uses RTDs to monitor temperatures during food processing, storage, and transportation. Ensuring the correct temperature helps maintain food safety and quality, preventing spoilage or contamination.

 

 

FAQ

 

Q: What are the applications of Resistance Temperature Detector?

A: Each RTD type is characterized by a unique resistance value corresponding to its temperature range, making them ideal for precise temperature sensing in applications such as HVAC systems, automotive, metallurgical, and food processing industries.

Q: Why use RTD instead of thermocouple?

A: RTD: Offers higher accuracy (ranging from +/-0.012 °C), excellent repeatability, and drift. Thermocouple: Less accurate, typical accuracy is 0.75% of reading or +/-1.0 °C whichever is greater for most base metal thermocouples.

Q: What are the advantages and disadvantages of resistance temperature detector?

A: The major advantages that an RTD has over Thermocouples are: Stability, Precision, and Repeatability. The disadvantages are the price and response time. The following table explains in more detail. Stability is the ability of a sensor to measure temperature with precision for a given length of time.

Q: What is the difference between a thermistor and a resistance temperature detector?

A: The major difference between thermistors and RTDs is linearity: thermistors are highly sensitive and nonlinear, whereas RTDs are relatively insensitive but very linear. For this reason, thermistors are typically used where high accuracy is unimportant.

Q: What is the principle of resistance temperature detector?

A: An RTD functions on the principle that as the temperature of a metal increases, so does the resistance to the flow of electricity. This change in resistance is measured using an electrical current passed through the sensor, and the resistance element measures the current in Ohms.

We're well-known as one of the leading resistance temperature detector manufacturers and suppliers in China, featured by quality products and low price. Please feel free to buy customized resistance temperature detector made in China here from our factory. Contact us for more details.

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