Overview

The Yokogawa UT32A-000-00-00/LP Digital Indicating Controller offers precise temperature control with a single input point.

Technical Specifications

• Number of Input Points: 1

• Input Types:

  • Thermocouple
  • Resistance-Temperature Detector (RTD)
  • Millivolt (mV)
  • Voltage (V)
  • Current (mA)

• Measurement Accuracy:

  • Thermocouple:
    • ±0.3°C and ±1 digit between 0 and 100°C
    • ±0.5°C ±1 digit between -100 and 200°C

• Applicable Standards:

  • Thermocouple and RTD: JIS, IEC, and DIN (ITS-90)

• Additional Input Specifications:

  • Input Sampling Period: Synchronized to control period
  • Burnout Detection: Configurable upscale, downscale, or OFF for thermocouple and RTD burnout signals. Integrated signal input below 0.1 V or 0.4 mA is considered burnout.
  • Input Bias Current: 0.05 μA (thermocouple and RTD)
  • RTD Measured Current: Approx. 0.16 mA
  • Input Resistance:
    • Thermocouple/mV input: 1 MΩ or more
    • Voltage input: Approx. 1 MΩ
    • Current input: Approx. 250 Ω (with built-in shunt resistance)

• Allowable Signal Source Resistance:

  • Thermocouple/mV input: 250 Ω or less
  • DC voltage input: 2 kΩ or less

• Allowable Wiring Resistance:

  • RTD input: Up to 150 Ω per line (equal conductor resistance between three lines)

• Allowable Input Voltage/Current:

  • Thermocouple/mV/mA or RTD input: ±10 V DC
  • Voltage (V) input: ±20 V DC
  • Current (mA) input: ±40 mA DC

• Noise Reduction Ratio:

  • 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 (15 to 35°C)
  • ±1.5°C (-10 to 5°C and 35 to 50°C)