UNI-T UT33B, Руководство по эксплуатации

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Before using the Meter inspect the case. Do not use the Meter if it is
damaged or the case (or part of the case) is removed. Look for cracks or
missing plastic. Pay attention to the insulation around the connectors.
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Inspect the test leads for damaged insulation or exposed metal. Check
the test leads for continuity. Replace damaged test leads with identical
model number or electrical specifications before using the Meter.
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Do not apply more than the rated voltage, as marked on the Meter, between
the terminals or between any terminal and grounding.
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The rotary switch should be placed in the right position and no any
changeover of range shall be made during measurement is conducted to
Warning
To avoid possible electric shock or personal injury, and to avoid possible
damage to the Meter or to the equipment under test, adhere to the following
rules:
Rules For Safe Operation (1)
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Model UT33B/C/D: OPERATING MANUAL