Hioki CM7290, Инструкция по эксплуатации

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8
Operating Precautions
Accuracy
We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt.
(digit) values, with the following meanings:
f.s.
(Maximum display value)
Indicates the display unit’s maximum display value for the range that is currently
in use.
rdg.
(Reading or displayed value)
The value currently being measured and indicated on the measuring instrument.
dgt.
dgt. (resolution)
The smallest displayable unit on a digital measuring instrument, i.e., the input
value that causes the digital display to show a “1” as the least-significant digit.
Operating Precautions
Follow these precautions to ensure safe operation and to obtain the full benefits of
the various functions.
DANGER
• Do not use the unit beyond its rated and specification ranges. Doing
so could make the unit break or heat up, possibly resulting in bodily
injury.
•
The sensor's maximum measurable current generally varies with
the frequency, and this restricts the current that can be measured
continuously with derating. Do not use the unit to measure currents
that exceed the derating. Doing so could cause heat emission from
the sensor, which could result in a malfunction, cause fire or burn
injury.
• Persons wearing electronic medical devices such as a pacemaker
should not use the Z5004 Magnetic Strap. The Z5004 Magnetic
Strap could interfere with electrical medical devices, and should be
kept away. The medical device's operation could be compromised,
posing risk to the wearer's life.
CAUTION
Do not use an uninterruptible power supply (UPS) or a DC-AC inverter that
produces rectangular waves or pseudo-sine-wave output to power the unit.
Doing so may damage the unit.