KAIDI smart temperature transmitter manufacturers for industrial

Company Advantages
1. The special composition of smart temperature transmitter makes it obtain good performance of . It generates only little magnetic interference
2. The product has developed rapidly and met the market demands. There is little variation between its measuring values
3. We have a professional lab to ensure high quality for this product. This product is notable for its strong overload capacity
4. As the stringent quality tests run through the whole production process, the quality of the product can be thoroughly assured. This product features a frequency response property

Platinum resistance thermometers (PRTs) offer excellent accuracy over a wide temperature range (from –200 to +850 °C). Standard sensors are are available from many manufacturers with various accuracy specifications and numerous packaging options to suit most applications. Unlike thermocouples, it is not necessary to use special cables to connect to the sensor.

The principle of operation is to measure the resistance of a platinum element. The most common type (PT100) has a resistance of 100 ohms at 0 °C and 138.4 ohms at 100 °C. There are also PT1000 sensors that have a resistance of 1000 ohms at 0 °C.

The relationship between temperature and resistance is approximately linear over a small temperature range: for example, if you assume that it is linear over the 0 to 100 °C range, the error at 50 °C is 0.4 °C. For precision measurement, it is necessary to linearise the resistance to give an accurate temperature. The most recent definition of the relationship between resistance and temperature is International Temperature Standard 90 (ITS-90).

The linearization equation is:

Rt = R0 * (1 + A* t + B*t2 + C*(t-100)* t3)

Where:

Rt is the resistance at temperature t, R0 is the resistance at 0 °C, and
A= 3.9083 E–3
B = –5.775 E–7
C = –4.183 E–12 (below 0 °C), or
C = 0 (above 0 °C)

For a PT100 sensor, a 1 °C temperature change will cause a 0.384 ohm change in resistance, so even a small error in measurement of the resistance (for example, the resistance of the wires leading to the sensor) can cause a large error in the measurement of the temperature. For precision work, sensors have four wires- two to carry the sense current, and two to measure the voltage across the sensor element. It is also possible to obtain three-wire sensors, although these operate on the (not necessarily valid) assumption that the resistance of each of the three wires is the same.

Company Features
1. Together with the growth of society, the reputation of KAIDI in the smart temperature transmitter marketplace has been improved. Our employees are our most important asset. The dynamic team is distinguished by its agility, effective communication, and professionalism. All these have provided the company with a strong foundation to better serve clients.
2. Over the years, we have maintained various honors. We have been awarded "Advanced Group among Enterprises", "China Quality Award", and "Civilized Unit", and so forth.
3. We have a pool of design professionals. They are well-educated and have a deep and unique insight into the way of designing products. They have already designed a broad range of products that sell like a hot cake in our clients' markets. Our company put much emphasis on its social responsibility. From the perspective of the most obvious point, we assume strict requirements regarding employees' welfare. This action will boost employees' morale and improve greater productivity eventually. Please contact.