Hioki LR8410-20, Instruction Manual

Page: 88 / 364

3.3 Input Channel Settings
76
Follow this procedure to configure thermocouple temperature measurement channels.
Make these settings on the [CH] screen.
See:
"Key Setting Procedure" (p .73)
Temperature Measurement Settings (using thermocouples)
4 5
6
1
2 3
: On
: Off
1
Select the input unit ( UNIT1 to 7 ) and channel

( 1-1 to 7-15 ), and check the box to enable the channel.
2
Select [Tc] .
3
Select the temperature measurement range.
The type-B thermocouple setting is disabled when the 100

C or 500

C range is selected. To use a
type-B thermocouple, first set the range to 2000

C.
4
Select the type of thermocouple to be used.
5
Enable/disable burn-out detection.
6
Select the reference junction compensation (RJC) method.
:
Setting options:(

: default setting)
When LR8510 or LR8511 is used
100

C

500

C
, 2000

C
Setting options:
When LR8515 is used
1000

C
Setting options:(

: default setting)
When LR8510 or LR8511 is used
K

, J, E, T, N, R, S, B, W
When LR8515 is used
K

, T
Setting options:(

: default setting)
OFF

Disable burn-out detection. Normally when the
thermocouple is disconnected, the value will
fluctuate, etc. and will not be stable.
ON Detect burn-out during thermocouple measure-
ment. When a burn-out occurs, “BURNOUT” is
displayed as the numerical, cursor, or calculation
value, and the following values are applied to cal-
culations and data storage: 327.66, 1638.3, and
3276.6°C for the 100, 500, 1000°Cf.s. and
2000°Cf.s. ranges, respectively. Note that the re-
cording interval setting is limited.
See:
"About the Recording Interval" (p .70)
Setting options:(

: default setting)
Int
 Use the instrument's internal compensation.Select this when connecting the thermocouple
(or compensating leads) directly to the instrument. Measurement accuracy is the sum of
the temperature measurement accuracy and the RJC accuracy.
Ext Use an external RJC method instead of the instrument's internal compensation.
Use this setting when connecting an external reference junction compensation
device (0°C ice water, etc.).The instrument measurement accuracy is equivalent
to the temperature measurement accuracy.
Temperature Measurement
Range
(Depends on thermocouple
type)
• With type B, the display
shows 0 to 400°C, but accu-
racy is not guaranteed.
• The K temperature measure-
ment range for the LR8515 is
-200°C to 999.9°C.
K
-200°C to 1350°C
J -200°C to 1200°C
E -200°C to 1000°C
T -200°C to 400°C
N -200°C to 1300°C
R 0°C to 1700°C
S
0°C to 1700°C
B
400°C to 1800°C
W 0°C to 2000°C