Hioki LR8432-20, Инструкция по эксплуатации

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Appendix 10 Frequently Asked Questions
A
34
When connecting a thermo-
couple directly to the instru-
ment, should reference
junction compensation be set
to external (EXT) or internal
(INT)? How is accuracy affect-
ed? Select INT when connecting a ther-
mocouple (or compensating leads)
directly to the instrument.
Overall measurement accuracy is
the sum of the accuracies of the
thermocouple and the reference
junction compensation (RJC).
Example: When measuring a tem-
perature from -100
°
C to 1,300
°
C
with a K thermocouple
The measurement accuracy is
±
1.5
°
C, obtained by adding the ref-
erence junction compensation accu-
racy of
±
0.5
°
C to the temperature
measurement accuracy of
±
1.0
°
C.
“Temperature Mea-
surement Settings”
(p.59)
How to display only CH1 to
CH3? Select only the channels to be used
on the Input Channel Settings dis-
play. To acquire data without dis-
playing it, select
×
as the waveform
display color.
“3.4 Setting Configu-
ration 2 – Input Chan-
nel Settings” (p.56)
“Selecting Waveform
Display Color” (p.66)
I am measuring humidity with a
converter that converts 0 to
100% RH to 1 to 5 V. How can I
read humidity directly?
Set the scaling method to
[2-pt]
,
and enter the values.
(1:1 conversion
→
0, 2:5 conversion
→
100, units: % RH)
“Converting Units
(Scaling function)”
(p.69)
Triggering
Question Remedial Action Reference page
Why does measurement not
start when “Wating for trigger”
is displayed? Triggering is enabled. To start re-
cording immediately with the
START key, disable all trigger crite-
ria or the trigger function on the
[Trig & Alm] screen.
“4.3 Confirming Trig-
ger and Alarm Crite-
ria Settings (List)”
(p.91)
How to acquire data before a
trigger? Enable pre-triggering to acquire
data before trigger events. “Setting Criteria for
Pre-Trigger Record-
ing (Pre-Trig)” (p.87)
Question Remedial Action Reference page