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Yokogawa UT5UT55A-040-110
Product Introduction:
The UT55A is a compact, high-accuracy digital indicating controller from Yokogawa’s UTAdvanced product family. It is designed for temperature, voltage, current, and process signal monitoring with a large 7-segment LED display. The UT55A-040-110 configuration specifies a 4–20 mA input with 100–240 VAC power supply.
Detailed content
Model Code Breakdown:
- UT55A — UTAdvanced Digital Indicator, 1/4 DIN size
- 040 — Input type: 4–20 mA DC (2-wire transmitter)
- 110 — Power supply: 100–240 VAC, 50/60 Hz
Technical Specifications:
| Parameter | Value |
|---|---|
| Display | 7-segment LED, 5 digits, 14.2 mm digit height (red) |
| Input Signal | 4–20 mA DC (2-wire) |
| Input Impedance | 250 Ω |
| Measurement Accuracy | ±0.1% of F.S. (±1 digit) |
| Sampling Period | 100 ms (200 ms for filtering option) |
| Power Supply | 100–240 VAC, 50/60 Hz (±10%) |
| Power Consumption | ≤ 5 VA |
| Output Options | Relay (ON/OFF), Voltage Pulse, Current (4–20 mA), Communication |
| Control Modes | ON/OFF, PID (with optional output modules) |
| Alarm Outputs | 2 alarm outputs (AL1, AL2), adjustable hysteresis |
| Communication | RS-485 (Modbus RTU) |
| Operating Temperature | 0°C to +50°C |
| Enclosure Rating | IP65 (front panel), NEMA 4X equivalent |
| Dimensions (W x H x D) | 96 x 96 x 110 mm (1/4 DIN) |
| Weight | Approximately 0.55 kg |
| Certifications | UL, CSA, CE, EAC |
Functional Features:
- Universal input scaling (linear, square root, custom)
- Programmable setpoints (SP1, SP2 with selector)
- Auto-tuning PID function (with CNT module)
- Dual alarm outputs with independent setpoints and hysteresis
- Ladder sequence program (up to 100 steps)
- Retransmission function for output signal mirroring
- Peak/Valley hold display capability
Structural Features:
- 1/4 DIN panel-mount design
- Screw-terminal connections (no tools required for wiring)
- Transparent front panel with LED display behind protective window
- Remote indicator model available
Applicable Industries:
- Food and beverage processing
- Pharmaceutical manufacturing
- Water and wastewater treatment
- HVAC systems
- General process industries
Installation Requirements:
- Cutout size: 92 x 92 mm for panel mounting
- Ensure adequate clearance for heat dissipation
- Use shielded twisted-pair cable for input signals in electrically noisy environments
- Ground the panel chassis to earth ground
Usage Precautions:
- Do not apply voltage exceeding 30 VDC to the input terminals
- Verify input signal range matches the configured scaling before operation
- Do not exceed the maximum ambient temperature of +50°C
- Replace batteries (if applicable to variant) every 2 years for memory backup
