Overview

The Yokogawa UT35A-010-01-00 is an advanced digital indicator controller offering a range of display types and input specifications suitable for diverse industrial applications. It provides high accuracy and various input options, including thermocouples, RTDs, voltage, and current. The controller is designed for precise monitoring and control of process variables with advanced noise reduction and reference junction compensation features.

Display Types

• PV Display (Process Variable):

  • Type: 5-digit, 14-segment active color LCD
  • Colors: White/Red
  • Character Height: Larger compared to UT32A for better readability

• Data Display:

  • Type: 5-digit, 11-segment color LCD
  • Color: Orange

• Bar Graph Display:

  • Type: 12-segment color LCD
  • Color: Orange

Accuracy

• Specified Conditions: Standard conditions (23°C temperature, 55% humidity, 50/60Hz power)
• Thermocouple and RTD Accuracy:
  • ±0.3°C and ±1 digit: 0-100°C
  • ±0.5°C and ±1 digit: -100 to 200°C

Input Specifications

• Supported Input Types: Thermocouple, RTD, Voltage, Current
• Burnout Detection:
  • Options: Upscale, downscale, or OFF (for thermocouple/RTD standard signals)
• Input Bias Current: 0.05 μA (thermocouple/RTD)
• RTD Measured Current: 0.16 mA
• Input Resistance:
  • Varies based on input type (thermocouple/mV, voltage, current)
• Allowable Signal Source Resistance and Wiring Resistance:
  • Specified for different input types
• Allowable Input Voltage/Current Range:
  • Varies based on input type (thermocouple/mV/mA, voltage, current)

Noise Reduction

• Normal Mode: 40 dB or more (at 50/60 Hz)
• Common Mode: 120 dB or more (at 50/60 Hz)

Reference Junction Compensation Error

• ±1.0°C: At 15 to 35°C
• ±1.5°C: At -10 to 5°C and 35 to 50°C