Hioki 3290-10, Instruction Manual

Page: 80 / 152

74
4.5 Current Integration
15.
Press
SHIFT
→
(
START/STOP
) to start integration.
START
appears, and the colon (
:
) in the elapsed time display blinks.
Auto power-off is disabled (
APS
not displayed).
16.
Press
SHIFT
→
(
START/STOP
) to stop integration.
STOP
appears, and the colon (
:
) in the elapsed time display stops
blinking.
If the timer is enabled, integration stops automatically after the pre-
set timer and repetition settings.
Unless output has been enabled, auto power-off is re-enabled (
APS
displayed).
• Pressing the button displays the integral and interval
mean values.
The interval mean value indicates the current value as the
interval / integrating time.
DC mode: Total Integral
→
Positive Integral
→
Negative Inte-
gral
→
Interval Mean Value
AC and AC+DC modes: Integral
→
Interval Mean Value
• The display update rate changes to the setting value.
• Press the
button to display peak, maximum and mini-
mum values (in DC mode, only positive and negative peak val-
ues).
• Stopping integration also stops the elapsed time count.
• The appearance of the "
+
" or "
-
" symbol blinking while an inte-
gral value is displayed indicates than an over-range measure-
ment occurred in the currently selected range and with the
indicated polarity.
• When an over-range current measurement occurs (
O.L.
dis-
played), the maximum value of the current range is used for
integration.
❖
Current range: see Section 6.1.1 "Current Measurement" (page 108)
• The appearance of the or indicator on the bar graph while
an integral value is displayed indicates than either a negative
or positive over-range condition occurred during current mea-
surement.
• If the measured current value becomes 0 A because of the
zero suppression function (counts of 5 or less are forced to dis-
play as 0), then 0 A is used for integration.
• Maximum integration time is 2,000 hours. Press the but-
ton to display values after 100 hours.
• When the frequency of the measured current is 45 Hz or
higher, measure using the FAST mode, which provides the
fastest measurement response to follow rapid fluctuations.