YOKOGAWA Daqstation DX2000, Руководство пользователя

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3-2
IM 04L42B01-01E
3.2 Setting the Burnout Detection and the
Reference Junction Compensation of the
Thermocouple Input
Set the function that detects burnouts in the sensor for thermocouple input and 1-5V
input and the
reference junction compensation method of the thermocouple.
Setup Screen
Press MENU (to switch to setting mode), hold down FUNC for 3 s (to switch to basic
setting mode), and select the Menu tab > Burnout, RJC .
Setup Items
• First-CH/Last-CH
Select the target channels.
• Burnout set > Mode
Detects thermocouple and 1-5V input sensor burnouts.
Settings Description
Off Does not detect burnouts in the sensor.
Up When the sensor burns out, the measured result is set to +over range. The
measured value displays “Burnout.”
For 1-5V input, the DX assumes that the sensor has burned out when the
measured value exceeds the scale upper limit by 10% of the scale width.
(Example: When the measured value is greater than 110 when the scale is from
0 to 100)
Down When the sensor burns out, the measured result is set to –over range. The
measured value displays “Burnout.”
For 1-5V input, the DX assumes that the sensor has burned out when the
measured value falls below the scale upper limit by 5% of the scale width.
(Example: When the measured value is less than –5 when the scale is from 0 to
100)
• RJC > Mode
Sets the reference junction compensation method of the thermocouple input. Select
Internal or External .
Settings Description
Internal Uses the reference junction compensation function of the DX.
External Uses an external reference junction compensation function. When set to
External , Volt is displayed.
• RJC > Volt
The compensation voltage to be added to the input. Set the value in the range of –
20000 µV to 20000 µV.