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The Changhui YR-GFD series of user-friendly fuzzy PID regulators (also known as PID controllers; when used for temperature control, they are referred to as temperature controllers) employ a fuzzy PID control algorithm. They feature simple operation, a measurement accuracy of 0.3%, seven different external dimensions, and support for 33 different signal inputs. They offer excellent control performance in industrial process control applications such as those related to pressure, flow rate, liquid level, and humidity. When used for temperature control in industries such as plastics, food, and packaging machinery, as well as in heating furnaces, they achieve a very good constant temperature effect of ±1°C. They can be used in conjunction with various actuators to perform PID regulation and control of electric heating devices, as well as electromagnetic and electric control valves. It supports 2 alarm inputs, 1 control output, and 1 DC24V power supply; the input, output, and power terminals are optically isolated. It can be powered by a switch-mode power supply with 100-240V AC/DC or 20-29V AC/DC voltage. It features a standard plug-in installation style, and can operate in an environment with a temperature range of 0 to 50°C and a relative humidity of 5%-85%RH without condensation. Highlights of the foolproof fuzzy PID regulator: 1. Imported components, manufactured using SMT technology ； High precision, high reliability, extremely low temperature drift, and a design resistant to strong interference. 2. The Japanese fuzzy PID control algorithm is adopted, ensuring no overshoot or underdrive during the control process ； Powerful PID self-tuning function (under normal operating conditions, starting the self-tuning process is sufficient to obtain the optimal PID parameters; there is no need for manual setting of these parameters, which makes things easier for beginners and engineers responsible for on-site instrument calibration). 3. The product is designed for a 10-year service life, with an instrument repair rate of ≤4‰, and a 24-month warranty period. 4. Due to mass production, the price of this product is the same as that of ordinary PID controllers, and its operation mechanism is also similar. Features of the Foolproof Fuzzy PID Controller: 1. It incorporates Japanese fuzzy PID control algorithms and output suppression functions, ensuring control without overshoot or underdrive. 2. It features a powerful PID parameter auto-tuning function; enabling optimal PID parameters to be obtained simply by activating the auto-tuning feature, which makes on-site debugging easy and convenient – especially useful for those new to PID parameter tuning. 3. The accuracy of this Foolproof Fuzzy PID Controller is 0.3% FS. It is primarily used for process control, and when used as a thermostat, it achieves a temperature control accuracy of approximately ±2°C. If you require higher temperature stability from a thermostat, it is recommended to use the YR-RJD thermostat, which is designed specifically for temperature control algorithms. This thermostat performs particularly well in situations involving large temperature lags, offering control performance comparable to that of brands such as Shimadzu, Yokogawa Honeywell, Fuji, RKC, and Honeywell. 4. It supports 33 different types of input signals, allowing users to freely set the measurement range and decimal place. 5. It features a dual-screen LED display (PV display for showing the measured value) ； SV displays parameters such as the input type in measurement mode, and the set values in parameter setting mode. 6. When a thermocouple or thermal resistor signal is used, the temperature display resolution can be switched between 0.1℃ and 1℃. 7. The foolproof fuzzy PID regulator features an acrylic face panel and silicone touch buttons, giving it an appearance similar to high-quality imported European instruments. 8. It is available in seven different dimensions: 160×80, 80×160, 96×96, 96×48, 48×96, 72×72, and 48×48 mm; the depth of the instrument is 110 mm. 9. The wiring terminals of the foolproof fuzzy PID regulator are the same for dimensions of 160×80, 80×160, 96×96, and 96×48 mm, but differ for 72×72 and 48×48 mm, thereby reducing the inconvenience caused by different wiring methods for users. 10. The foolproof fuzzy PID regulator features a highly reliable plug-and-play design; the internal components can be separated from the casing, allowing users to replace or repair the instrument without having to disconnect wires. 11. It uses a circuit design resistant to strong interference, along with imported components and SMT welding techniques in its production. 12. The controller has an ON/OFF alarm output with hysteresis, which can be set by the user. 13. It is calibrated using a fully digital microprocessor, resulting in extremely low temperature drift and ensuring long-term stability and accuracy of the foolproof fuzzy PID regulator. 14. The parameters set by the controller are retained even after power loss, and the parameters can be locked with a password. 15. The foolproof fuzzy PID regulator is an economical type of regulator; it comes with two optional PID control algorithms, suitable respectively for systems that require rapid response and systems with temperature lag. 16. The controller has an output limiting function, and it is possible to set the control output to act in a positive or negative manner. 17. Since the communication and control output terminals are located at the same position on the instrument’s wiring terminals, it is not possible to achieve both communication and control output simultaneously; as a result, the instrument does not have communication capabilities. Dummy-type fuzzy PID regulator: http://yunrun.com.cn/product/977.html