Gossen MetraWatt M272B, Short-Form Operating Instructions

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Gossen Metrawatt GmbH 10
• Do not use the instrument and its accessories after long periods of
storage under unfavorable conditions (e.g. humidity, dust or extreme
temperature).
• Do not use the device and its accessories after extraordinary stress-
ing due to transport.
• Only use the instrument and its accessories within the limits of the
specified technical data and conditions (ambient conditions, IP pro-
tection code, measuring category etc.).
• Do not use the device in potentially explosive atmospheres.
• The device must not be exposed to direct sunlight.
• The device and the accessories may only be used for the
tests/measurements described in the documentation for the device.
• Maximum allowable voltage between the voltage measuring sock-
ets or all connector sockets and ground is 1000 V for measuring
category III and 600 V for measuring category IV.
• The multimeter may only be operated with installed rechargeable
battery pack or mains module. Dangerous currents and voltages are
otherwise not indicated! In addition, the device may be damaged.
• Weak (insufficiently charged) rechargeable battery: Do not perform
safety-relevant measurements if the “weak battery” icon appears in
the battery level indicator. Furthermore, compliance with the listed
specifications is no longer assured.
• Be prepared for the occurrence of unexpected voltages at devices
under test (e.g. defective devices). For example, capacitors may be
dangerously charged.
• Do not perform any measurements in electrical circuits with corona
discharge (high-voltage).
• Dangerous pulsating voltages in HF electrical circuits. Be careful, if
you perform measurements in them.
• Do not use the device if the fuse cover has been removed. Touch
contact with dangerous voltage is otherwise possible.
• The device is equipped with fuses. The device may only be used as
long as the fuses are in flawless condition. Defective fuses must be
replaced.
• Plugging in the measurement cables must not necessitate any
undue force.
• Never touch conductive ends (e.g. of test probes).
• Fully unreel all measurement cables before starting a test/measure-
ment. Never perform a test/measurement with the measurement
cable rolled up.
• Ensure that alligator clips, test probes or Kelvin probes make good
contact.