UNI-T UT90A Specifications download pdf (Page 4)

Model UT90A: OPERATING MANUAL

4

to the following rules:

l 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.

l 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.

l When using the test leads, keep your

fingers behind the finger guards.

l Do not apply more than the rated

voltage, as marked on the Meter,

between the terminals or between any

terminal and grounding.

l When the Meter working at an effective

voltage over 60V in DC or 30V in AC,

special care should be taken from there

is danger of electric shock.

l Use the proper terminals, function, and

range for your measurements.

l The rotary switch should be placed in

the right position and no any

changeover of range shall be made

during measurement is conducted to

prevent damage of the Meter.

l Disconnect circuit power and discharge

all high-voltage capacitors before

testing resistance, diodes or continuity.

l Charge as soon as the Meter indicator

appears to keep precision of the

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