China Temperature Transmitter Manufacturers Factory

Your Professional Temperature Transmitter Supplier

Chongqing Duchin Instrument Co., Ltd. specializes in the research, development, manufacturing, and distribution of temperature sensors and related equipment. The company’s primary product offerings include thermocouples, resistance temperature detectors (RTDs), compensation cables, electric heaters, thermocouple vacuum calibration devices, and composite metal protective tubes. In addition, the company undertakes instrumentation and control system projects based on customer requirements.

Why Choose Us

Team & Service

Our team is a dynamic,Quickly respond to customer needs, experienced technical team, provide design and customization services.

Wide Range of Applications

Our products are widely used in FTTH (Fiber to the Home) and FTTA (Fiber to the Antenna) applications.

Our Certificates

We have established a quality assurance system compliant with ISO9001 standards. Our products are strictly tested according to IEC, GR-326-Core, GR-3120-Core, GR-771-Core, and GR-1221-Core standards to ensure superior performance and reliability.

Broad Market

Our products are exported to a wide range of Market layout in Asia, Europe, Middle east, North America, South America, Africa.Products are exported over 50 countries, and are widely recognized by customers.

Output Signal

Supply voltage	12…30VDC
Normal loop current	4…20mA
Max. load	(Uaux-12V)/0.022Ω
Out-of-range current	Under lower range 3.84mA
Over upper range	20.5mA
Sensor break or short-cut	3.6mA or 22.8mA, configurable

Rated Conditions

Operation temperature	-40…+80℃
Storage temperature	-40…+80℃
Relative humidity	≤98%, condensing
Electromagnetic compatibility	According to GB/T 18268-2000

Types of Temperature Transmitter

The temperature transmitters produced by our company mainly include the following types:

Head Mounted Temperature Transmitter

Head mounted temperature transmitter converts the temperature signal (usually a nonlinear millivolt or resistance signal) sent by the temperature sensor into its supposed temperature value and its output signal value (usually a standard signal of a current of 4~20mA/DC or a voltage of 1~5V/DC, which are in a linear relationship with actual temperature).

Din Rail Temperature Transmitter

A DIN rail temperature transmitter is a device used in industrial settings to convert a temperature sensor's signal into a standardized, usable signal for monitoring and control systems. It's mounted on a DIN rail, a metal rail used for mounting electrical and industrial control equipment, for easy installation and integration.

Advantages of Temperature Transmitter

01/

Simplify Engineering and Maintenance
Temperature transmitters can be integrated into a component’s connection head, which reduces wiring requirements and the instrument footprint. This makes installation and maintenance much simpler and more cost-effective.

02/

Advanced Diagnostics
Enable advanced diagnostics that can help detect issues with temperature readings or system components. This makes it easier to troubleshoot problems and reduce downtime.

03/

Greater Noise Resistance
Temperature transmitters offer much greater noise resistance than directly wired temperature monitors. This is especially important over long distances where electrical noise can be problematic. Temperature transmitters also have high immunity to ambient electrical noise.

04/

Isolate, Amplify, Filter Noise, Linearise, and Convert Input Signals
Temperature transmitters can isolate, amplify, filter noise, linearise, and convert input signals from sensors. This ensures accurate temperature readings and eliminates interference from other electrical signals.

05/

Output Signal Compatibility
The output signal from temperature transmitters works with many standard devices, which makes it easy to integrate them into existing temperature monitoring systems.

06/

Reduced Cost
Temperature transmitters don’t require expensive extension wires, which reduces the overall cost of a temperature monitoring system. They also use low-voltage signals that can be transmitted over ordinary copper wire, which further reduces costs.

Applications of Temperature Transmitter

Pharmaceutical Manufacturing
Pharmaceutical facilities rely on consistent temperature control to maintain product efficacy and compliance with strict regulations. Temperature transmitters ensure that measurements are relayed accurately to automated systems, helping manage temperature-sensitive processes effectively.

Industrial Automation
In automated industrial settings, temperature transmitters are integral for maintaining consistent process temperatures. They convert signals from thermocouples and RTDs, ensuring real-time monitoring and adjustments, which are essential for quality control and efficiency.

Oil and Gas
The oil and gas sector relies on accurate temperature measurements to maintain safety and efficiency during drilling and refining. Temperature sensors with transmitters help monitor critical areas, prevent overheating, and maintain safe operational limits.

Food Processing
Temperature transmitters contribute to maintaining precise heat levels in food processing, ensuring product safety and quality. By using thermocouple transmitters, manufacturers can accurately measure and control cooking and cooling cycles, aligning with industry regulations.

Power Generation
In power plants, temperature transmitters are used to monitor systems where temperature plays a key role in ensuring safe and efficient energy production. Reliable temperature data helps prevent costly equipment failures and prolongs the lifespan of components.

Precautions for Using Temperature Transmitter

Confirm The Use Of The Environment
Ensure that the temperature transmitter is installed in the temperature, humidity and no corrosive gases in the environment. Avoid installing in the vicinity of the equipment with severe vibration or high-frequency noise, so as not to affect the measurement accuracy.

Correct Wiring
Follow the wiring diagram and terminals provided in the product manual to ensure that the polarity of the connected power supply and output signal lines are correct.

Regular Calibration
In order to ensure the measurement accuracy of the temperature transmitter, it is recommended to carry out regular calibration. The calibration period can be determined according to the actual use of the situation, generally no more than half a year or a year.

Pay Attention To Safety
When using the temperature transmitter, you should observe the safety norms, make sure the equipment is grounded, and avoid using it in dangerous environments.

Keep clean

Check the appearance of the temperature transmitter regularly and keep it clean. If you find dirt or dust on the surface, it should be cleaned up in time so as not to affect the measurement results.

Replace the sensor regularly

According to the use of the situation, regularly replace the sensor of the temperature transmitter. The service life of the sensor is limited, and it should be replaced in time when it expires so as not to affect the measurement accuracy and service life.

Correct installation and maintenance

Install and maintain the temperature transmitter correctly according to the requirements of the product manual, follow the correct installation steps and precautions to ensure the normal operation of the equipment.

Ordering Process

productcate-983-498

Packaging and Shipping

Packaging	All products, we will pack them carefully, items will be pakaged with PP bag, carton or any other protective stuff if necessarily, then placed in pallets or plywood case.
Shipping	We ship by Express, by air, by sea, by train. Normally we checked and compare, then provide customer the most proper shipment method.

Our Factory

The establishment of Chongqing Duchin Instrument CO., LTD was marked in 1995, located at No. 290 Fengshixing Road, Beibei District, covers area over 11'000m2.

Certifications

FAQ

Q: What are the basics of temperature transmitter?

A: Transmitters provide a two-wire output with the same wiring used for power and output. The load resistance is connected in series with a dc power supply, and the current drawn from the supply is a 4-20 mA or output signal which is proportional to the input signal.

Q: What are the problems with temperature transmitters?

A: Temperature transmitters can fail for several reasons, such as electrical surge, physical damage, prolonged exposure to extreme conditions, failure of the sensor, or problems with the power supply.

Q: How to calculate temperature transmitter?

A: There is a straightforward linear relationship between the units of milliamps between four and 20 and the degrees between 50 and 330. One milliamp equals 17.5 degrees ((330-50) / (20-4)). So, (13.77-4) (17.5) + 50 = 220.975.

Q: What is the difference between RTD and temperature transmitter?

A: A temperature transmitter is a device that converts the signal from the RTD sensor into a standardized output signal, such as 4-20 mA or 0-10V, that can be transmitted to a monitoring or control system.

Q: How accurate is a temperature transmitter?

A: RTD and thermocouple transmitters provide a full scale accuracy of ±0.1%. Temperature transmitters also provide stability by isolating signals from electromagnetic and radio frequency interference.

Q: What is the difference between a temperature sensor and a temperature transmitter?

A: Temperature sensor does just that, it senses the temperature of any content needing to be measured, whether that is solids, liquids or gases. The temperature transmitter is the device, which connects to the temperature sensor to transmit a signal for monitoring and controlling purposes.

As one of the leading temperature transmitter manufacturers in China, we warmly welcome you to buy temperature transmitter made in China here from our factory. All customized products are with high quality and competitive price.

Head Mounted Temperature Transmitter