Hioki CHT3548, Руководство пользователя, Страница: 34 / 81

Hope Electronics Technology Manual
Edition
V1.0 34
Out-of-range detection Measurement examples
The measurement range is
exceeded.
40 mΩis measured in the 30 mΩ range.
The relative display (% display)
of a measured value exceeds the
display range (999.99%).
5000 (+2400%) is measured with a
reference value of 200.
The A/D converter input range is
exceeded during a measurement.
Such an error occurs, for example, if a
high resistance is measured in an
environment with external noise.
The calculation result cannot be
displayed.
The calculation result for the length
conversion function exceeds 999.99 km.
*2 Current fault detection function
Current fault examples
l The DRIVE+ or DRIVE- probe is open.
l The measurement target has a broken wire (open-circuit work).
l
The DRIVE+ or DRIVE- wiring has a broken wire or a bad connection.
Range
（
Ω
）
3m 30m 300m 3 30 300 3k 30k~3M
Wiring and contact
resistance
（
Ω
）
0.5 10 100 2k 800 2k
Holding a measured value
The auto-hold function helps to verify a measured value. When the
measured value becomes stable, the value is automatically held.
IMPORTANT
A wiring resistance exceeding the following value in each range causes a
current fault, making the measurement impossible. In the 1 A measurement
current range, reduce the resistance of the wiring and contact between the
measurement target and test leads.