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5-30
IM 701210-05E
5.16 Setting the Temperature Measurement
Explanation
Thermocouple Type
Select the type to match the thermocouple that you are using.
Select the thermocouple type from the following.
When the input terminal is open, the displayed value is set to a value less than or equal
to the lower limit of the measurement range.
Type
Measurement Range
K
–200 to 1300
°
C
E
–200 to 800
°
C
J
–200 to 1100
°
C
T
–200 to 400
°
C
L
–200 to 900
°
C
U
–200 to 400
°
C
R
0 to 1700
°
C
S
0 to 1700
°
C
B
400 to 1800
°
C
N
0 to 1300
°
C
W
0 to 2300
°
C
Au7Fe
0 to 300 K
Temperature Unit
Select the temperature unit from
°
C, K, or
°
F. The default setting is
°
C.
Setting the Display Range
To display the measured waveform, the upper and lower limits need to be set according
to the input.
• Selectable Range
• –5432 to 5432
°
C (resolution: 0.1
°
C)
• –5432 to 5432 K (resolution: 0.1 K)
• –5432 to 5432
°
F (resolution: 0.1
°
F)
The minimum span is 2
°
C (or 2 K).
Setting the RJC
The DL750/DL750P normally performs reference junction compensation with the built-in
RJC circuit when measuring temperature with the thermocouple. When checking the
temperature measurement value, or when using an external reference junction (0
°
C), the
internal reference junction compensation needs to be disabled.
The DL750/DL750P allows you to select whether to use the internal reference junction
compensation.
Normally, this is set to ON.
Note
If a voltage corresponding to a certain temperature t is applied at the input with the RJC
turned OFF and the measured temperature is not correct, the instrument may be damaged.
Contact your nearest YOKOGAWA dealer.
Burnout Setting
If the thermocouple measurement input detects a burnout, the measured value is fixed to
the upper limit of the measurement range of each thermocouple. This function is used to
accurately detect a burnout in the thermocouple. By default, this setting is turned OFF
(do not detect burnouts).