Key Parameters:
| Category | Specification |
| ：--- | :--- |
| Series | Yokogawa "U" or "UM" Series (Older Generation) |
| Function | Thermocouple Isolator & Converter |
| Input Signal | Thermocouple, Type K |
| Input Range | Standard K-type range (e.g., 0 to 1300°C / 32 to 2372°F). Exact range should be verified. |
| Output Signal | Analog, 4 to 20 mA DC (isolated) |
| Load Resistance | Maximum 550 Ω (at 20 mA) |
| Power Supply | 100 - 240V AC, 50/60 Hz |
| Isolation | Input-Output-Power: 500V AC or 1500V AC (typical for these models). |
| Accuracy | Typically ±0.2% of span |
| Cold Junction Compensation (CJC) | Built-in, for accurate thermocouple temperature measurement. |
| Operating Temperature | 0 to +55°C (32 to 131°F) |
| Mounting | Standard DIN rail (35mm) |
| Configuration | Fixed range; typically configured via internal DIP switches or jumpers (if any configuration is available). |
| Status Indicators | LED for power status. |

Typical Application
This module is a classic temperature transmitter:

Input: A K-type thermocouple is connected to the input terminals, measuring temperature in a furnace, reactor, or pipe.

Processing: The conditioner isolates the millivolt signal, performs Cold Junction Compensation, and linearizes it.

Output: A proportional 4-20 mA signal is generated. For example, 4 mA might represent 0°C and 20 mA represents 1300°C.

Destination: This 4-20 mA signal is sent to a PLC or control system for monitoring, recording, or control.