AXIOMET AX-TI220, Operation Manual

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7
AC voltage and AC current are true effective values, which distinguishing this meter from the
meters which only can measure the AC average value.
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Automatic and manual ranges: When turning on the meter’s power switch the meter defaults the
automatic range state (AUTO displaying), and simultaneously it will automatically select the proper
range according to the measured electric parameters. If OL being displayed under automatic range,
it indicates the measured value exceeding the meter’s maximum range. Pressing the RANGE key
under the automatic range the meter will enter the manual range(MANUAL displaying), then
pressing the RANGE key again it will be possible to select the required range. The indicator for
range will display the maximum value of this range. If OL displaying under the manual range,
it indicates the measured value exceeding the selected range. Press the RANGE key under the
manual range for two seconds and then release it, the meter will go back to the automatic range
state.
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Linear frequency measurement: Pressing the Hz/Duty key when the meter performing
measurements on AC voltage or current, it will be capable to measure the frequency of the AC
component. However it has a certain requirements on the amplitude of the AC component.
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Logic impulse duty ratio measurement: logic impulse duty ratio refers to: (high level
width/impulse cycle)×100%
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Diode measurement: during diode measurement the meter is indicating to the forward voltage
drop of the diode
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Insulation resistance measurement: during insulation resistance measurement state, press the
TEST key to start measuring, and then press the TEST key again to stop measuring.
The measurement range of the insulation resistance is 50K---2G.
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Maximum/minimum value measurement: by pressing MAX/MIN keys the meter can enter the
maximum/minimum value record state, and it will continuously update the maximum/minimum
values based on the new measurement results. Pressing the MAX/MIN key can display the maximum
value, the minimum value, the average value and the current value in cycles. After exiting the
MAX/MIN measurement state the recorded maximum value/minimum values will disappear.
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Automatic shutdown and the continuous operating mode: after the meter being turned on,
in case of stopping to pressing any key or stopping to turning the rotary switch for more than fifteen
minutes, the meter will automatically shutdown.
（
The meter will not automatically shutdown
during the insulation resistance measurement.
）
As the meter will still consume a little energy after
its automatic shutdown, so it is better to turn off the POWER switch if the meter remains idle for
a long time. If you want the meter to operate continuously without automatically turning off, it can
be done only just by pressing down the SELECT key at the same time when turning on the POWER
switch.
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Low voltage detection: when the meter detecting the total voltage of the batteries lower than
6.8V, the symbol on the LCD screen will be lighted to prompt the batteries should be
replaced.
Chapter 4 Technological Specifications
General Features
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Voltage between the measurement end and ground is of 1000V AC/DC. 1000V CAT Ⅲ, 2th pollution
grade.
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5000 counts, automatic/manual range, basic sampling rate 2.5 t/s and 51 segment analog bar.