Yokogawa UT55A‑140‑110
- Product Name: UT55A‑140‑110 Advanced Digital PID Controller
- Product Series: UT Advanced Series High‑Performance Controllers
- Product Brief Introduction: Flagship high‑precision multi‑function digital PID controller of Yokogawa UT series, integrating advanced PID control, multi‑input/output configuration, data communication and on‑site monitoring functions, for high‑precision closed‑loop process control.
Detailed content
- Technical Specifications:
- Model Code Definition: UT55A = main model series; 140 = input/output configuration; 110 = power supply and optional function code
- Universal Input: Thermocouple (all types), RTD Pt100/Pt1000, DC voltage, DC current signals
- Control Output: Relay output, voltage pulse output, analog retransmission output selectable
- Control Algorithm: Advanced PID with auto‑tuning, fuzzy PID, self‑learning function
- Power Supply: 100–240 V AC (50/60 Hz) wide‑range power supply
- Communication Interface: RS485 (Modbus RTU) standard communication port
- Display: Large‑size high‑resolution color LCD display
- Operating Temperature: 0 °C to +50 °C
- Protection Grade: IP66 front panel (dustproof and waterproof)
- Functional Features: Multi‑loop control capability, multi‑level alarm logic, trend data recording, event log, parameter batch setting, remote communication control, dual PID switching function.
- Performance Parameters: Measurement accuracy ≤ ±0.05% full scale, PID control precision ≤ ±0.1% FS, sampling speed 100 ms, data storage capacity up to 100,000 records, long‑term stability zero drift ≤ 0.03% FS per year.
- Material Composition: Die‑cast aluminum alloy front panel, high‑grade flame‑retardant PC housing, industrial LCD screen, high‑reliability solid‑state relay and control chips.
- Structural Characteristics: Standard 1/4 DIN panel‑mount structure, human‑machine interactive key layout, rear modular terminal wiring, anti‑vibration and anti‑impact internal structure.
- Working Principle: Collects multi‑type field process signals, realizes high‑precision PID operation through advanced control algorithm, outputs control signals to adjust field actuators, completes closed‑loop control, and realizes remote data interaction via communication interface.
- Advantage Highlights: Ultra‑high control precision, multiple advanced control algorithms, strong communication compatibility, large‑capacity data recording, excellent anti‑interference performance, wide environmental adaptability, stable long‑term operation.
- Applicable Industries: Precision pharmaceutical production, semiconductor manufacturing, aerospace component processing, fine chemical industry, high‑temperature precision heat treatment, laboratory precision control equipment.
- Installation Requirements: Standard panel cutout installation, ensure good ventilation and heat dissipation, avoid strong electromagnetic interference sources, ground the controller reliably.
- Usage Precautions: Strictly match input signal wiring specifications, avoid overloading output terminals, regularly calibrate measurement accuracy, back up recorded data periodically, prevent liquid splashing on the front panel.












