Product Specifications
Manufacturer: Xi'an Yunyi Instrument Co., Ltd.
Series: YUNYI TC
Product Type: Digital Temperature Controller
Control Type: PID (auto-tuning)
Display: Analog, Digital
Control Accuracy: ±0.1°C
Input Compatibility: Thermocouples, RTDs
Output Types: Relay, SSR, Analog
Product Description
The Xi’an Yunyi YUNYI TC series comprises digital temperature controllers designed for closed-loop thermal regulation in industrial automation. Models such as the XMT812 support PID control with auto-tuning, and offer analog and digital display as well as relay, SSR, and analog outputs.

YUNYI temperature controllers serve as core control units within industrial automation systems. By receiving signals from temperature sensors such as thermocouples and RTDs, they display real-time temperature readings and compare them against user-set target temperatures. Based on the deviation, advanced PID algorithms output digital, analog, or communication signals to precisely drive actuators such as contactors, solid-state relays (SSR), and electric control valves.

Key Features
- PID Auto-Tuning: Advanced PID control with auto-tuning (AT) for stable closed-loop performance with minimal overshoot.
- Multi-Function Integration: Supports multi-segment program control, dual setpoints, dual outputs, alarm outputs, and communication functions in a single unit.
- Wide Input Compatibility: Compatible with thermocouples (S, R, B, K, N, E, J, T) and RTDs (Pt100, Cu50).
- Flexible Output: Relay contact (AC 220V/3A) and SSR drive (DC 8–14V) output options.
- Robust Design: Operating temperature 0–50°C, ≤85% RH, suitable for demanding industrial environments.
Applications
- Plastics processing
- Food industry
- Packaging machinery
- HVAC systems
- Industrial heating and cooling processes
Resources & Documentation
Digital Temperature Controller PID, Analog Output, Multi-Function, Yunyi
Product Specifications
Manufacturer: Xi'an Yunyi Instrument Co., Ltd.
Series: YUNYI TC
Product Type: Digital Temperature Controller
Control Type: PID (auto-tuning)
Display: Analog, Digital
Control Accuracy: ±0.1°C
Input Compatibility: Thermocouples, RTDs
Output Types: Relay, SSR, Analog








