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IM DL350-01EN
Reference Junction Compensation (RJC)
The voltage produced by thermocouple is based on the temperature of the point that you are measuring and the
temperature of the reference junction. Reference junction compensation (RJC) refers to the act of correcting for
the temperature of the measuring instrument and using it as a cold junction.
On the instrument, you can turn the internal RJC circuit on and off.
• ON: Select ON to use the RJC circuit to perform reference junction compensation.
There is an RJC circuit inside the 701261, 701262, 701265, and 720266 temperature modules and also
inside the 701953 scanner box that is connected to a 720221 16-CH temperature/voltage input module.
• OFF: Select OFF to check measured temperature values or use an external reference junction (0°C).
Normally, you should perform measurements with RJC set to ON.
When you set RJC to OFF and apply a voltage that corresponds to a temperature t to an input terminal, if
the measured temperature does not match temperature t, the instrument or the module may be damaged.
Contact your nearest YOKOGAWA dealer.
Burnout (Burn Out)
Specify the behavior when the thermocouple input detects a burnout.
• ON: When a burnout is detected, the measured value is fixed at the upper limit (Upper) of the measurement
range of thermocouple.
• OFF: Burnouts are not detected.
Labels (Label)
Temperature Unit (Unit)
Set the temperature unit to °C or K. On models with a language suffix code other than -HJ (Japanese), you can
also select Fahrenheit (°F) for the unit.
Display Range (Upper/Lower)
To display the measured waveform on the screen, you need to set upper and lower display range limits that are
appropriate for the input.
Selectable range:
• –5432 to 5432°C (when the resolution is 0.1°C)
• –5432 to 5432K (when the resolution is 0.1K)
The minimum span is 2°C (or 2 K).
Upper and Lower Limit Linking
You can change the upper and lower limits while keeping the interval between them constant.
Display Group (Display Group)
Linear Scaling (Linear Scale)
Copy (Copy to)
4 Vertical Axis