not checked, the input field is grayed out and disabled. You can only
use the built-in cold junction temperature.
- If checked, click or tap the input field of Cold Junction Temperature,
then input the user-defined value with the pop-up numeric keypad.
NOTE
Theoretically, TC is measured at 0°C at the cold side. However, the instrument is
usually at room temperature during measurement rather than 0°C.
This has caused the thermopotential difference to decrease, resulting in
measurement inaccuracy or error.
Therefore, it is necessary to make the cold-junction compensation to reduce the
error.
- Temperature Unit: sets the temperature unit. The available units are ℃, ℉,
and K. By default, the unit is ℃.
- Display Meas. Value:
enables or disables the display of the measurement value on the screen.
- ON: enables the display of the measurement value on the screen.
- OFF: disables the display of the measurement value on the screen.
- Apply
Click or tap Apply to apply the current setting.
• RTD
- RTD is a temperature detector commonly used in medium-low
temperature range. It features in high measurement accuracy and stable
performance.
It measures the temperature depending on the changing resistance of the
measured substance with the temperature. The multimeter will display the
temperature corresponding to the resistance when the resistance changes.
This kind of sensor has good linearity.
The multimeter adopts the approximate arithmetic of IEC751 standards
and converts the resistance signal from the temperature sensor into the
related temperature for displaying.
For the reference table about each RTD, please refer to the related
standards.
Front Panel Operation
DM858 Series User Guide
60
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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