The Xiamen Yudian AI-808 thermostat/regulator is a domestically produced control device designed for high performance and reliability. It integrates advanced ASIC chips and modular hardware design, ensuring efficient and stable operation. The device employs digital calibration techniques on both input and output signals, eliminating the instability caused by poorly adjustable resistors. Its active zero adjustment technology ensures long-term stability without zero drift, delivering accurate and consistent measurement results. The AI-808 offers multiple input and output configurations, along with flexible alarm settings. It supports manual/automatic switching, auto-tuning, and display of output values, making it suitable for direct control of valve orientation via a servo amplifier. The power supply operates within a wide voltage range of 85–264VAC (50–60Hz), ensuring reliable performance even in challenging environments.
The Xiamen Yudian AI-808 thermostat features:
- Dual-row, four-digit digital display with two decimal places
- Supports all types of thermocouples, resistance temperature detectors (RTDs), and standard electrical signal inputs
- Temperature resolution: 0.1; other parameters: 0.001
- Operating ambient temperature: -10°C to +60°C
- Humidity: less than 90% RH
- Power consumption: less than 5W
- Alarm outputs for upper and lower limits, error thresholds
- Output options include solid-state relays, mechanical relays, and thyristor (zero-crossing or phase control) signals
- Optional RS485 communication interface
In a real-world application, the AI-808 was used to replace aging E27 series regulators in an automatic pump pool level control system. Previously, the system relied on imported regulators costing around 14,000 yuan per unit, along with a servo amplifier valued at 1,000 yuan. This setup had more complex control links and a higher failure rate. By switching to the domestic AI-808 regulator, the cost dropped significantly to just 2,000 yuan (including function modules), reducing the investment by about seven times. Additionally, the system no longer needed a separate servo amplifier. The AI-808’s digital display made operations more intuitive, and its bump alarm function enhanced the overall control performance and system stability.
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