Introduction to the performance and features of the Changhui isolated intelligent temperature transmitter YR-ER212

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The YR-ER212 isolated intelligent temperature transmitter (http://yunrun.com.cn/product/293.html) is manufactured by Changhui Instruments using American technology. This intelligent temperature transmitter is suitable for thermocouple (TC) and thermal resistor (RTD) signals, converting the input signals into a 4-20mA two-wire output. Install the intelligent temperature transmitter and upgrade the sensor in the temperature sensor junction box to an integrated temperature transmitter ； The intelligent temperature transmitter is installed in a dedicated junction box, and can be mounted in industrial sites in horizontal, vertical, wall-mounted, or pipeline-mounted configurations (it can also display readings on-site when equipped with an LCD display). Features of intelligent temperature transmitters: 1. Utilizes American technology and imported brand components, offering accurate measurement, resistance to strong interference, stability and reliability, low temperature drift, low power consumption, and a long service life. 2. The YR-ER212 (isolated temperature transmitter) was originally mass-produced through overseas contract manufacturing; it is now sold in China. It is manufactured on an OEM basis for other domestic manufacturers in large quantities, with the same design but different casing colors. It is currently one of the smart temperature transmitters with the best cost-performance ratio in China, allowing users to obtain high-performance YR-ER212 at the price of domestic analog temperature transmitters. 3. The intelligent temperature transmitter features a universal input, offering excellent versatility and interchangeability. 4. The intelligent temperature transmitter is equipped with a specially designed USB high-end configuration port, which allows for free setting of the input signal type, the temperature transmitter’s range, and calibration through a PC ； The temperature transmitter does not need to be recalibrated after configuration ； The temperature transmitter configuration software features Chinese operation and is easy to use; configuration can be learned in just three minutes. 5. The temperature transmitter has no potentiometer; it is automatically calibrated by the microprocessor, ensuring that its accuracy remains unchanged over many years. 6. Built-in cold junction compensation (cold junction compensation when using thermocouple inputs): The YR-ER212 intelligent isolated temperature transmitter uses imported AA-grade SMD Pt100 for compensation, with a compensation range of -20~80°C and a cold junction compensation accuracy of ±0.5℃ ； 7. The YR-ER212 intelligent isolation temperature transmitter requires no maintenance for five years, providing stable temperature readings over an extended period of time. Technical specifications of intelligent temperature transmitters: 1. Input type, accuracy, and cold-junction compensation accuracy of intelligent temperature transmitters. ◆ Input type and accuracy of the intelligent isolated temperature transmitter YR-ER212: The cold-junction compensation accuracy of the intelligent isolated temperature transmitter YR-ER212 is ±0.5℃. 2. Output signal: 4-20mA two-wire system. 3. Supply voltage: The supply voltage for the isolated temperature transmitter YR-ER212 is 12V-30VDC ； Power supply voltage for non-isolated temperature transmitter YR-ER213: 12V–40VDC. 4. Load resistance: RL ≤ Ω. 5. Temperature drift: The temperature drift of the isolated temperature transmitter YR-ER212 is 0.005% FS/℃ ； 6. Insulation strength: The input/output of the isolated temperature transmitter YR-ER212 can withstand ≥1500V for 1 minute without damage.
7. Insulation resistance: Input/output ≥100MΩ.
8. Current limit: ≤22mA.
9. Response time: ≥90% of the final value is reached in ≤1s.
10. Saturation current: 3.9mA at the low end, 20.5mA at the high end.
11. Alarm current: In the event of sensor damage or a broken sensor connection, the output current is 3.9mA or 22mA (except for thermocouples TC).
12. Operating temperature: -40~80℃.
13. Storage temperature: -40～100℃.
14. Condensation: Allowed.
15. Protection rating: IP20 (for the instrument body) ； IP66 (installation). 15. Seismic resistance: 4g/2–150Hz. 16. Installation angle: unrestricted. 17. Installation area: Type B top-mounted box installation. 18. Electromagnetic compatibility: meets the requirements for industrial equipment applications as specified in GB/T18268 (IEC 61326-1). 19. Dimensions of the temperature transmitter: outer diameter Φ44mm, thickness 22mm. 20. Center distance between the mounting holes of the temperature transmitter: 33–36mm. Source: Changhui Instruments http://yunrun.com.cn/