Jeulin 291 034, Измерения и приборостроение

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Measurement and instrumentation
Multimeter model UT70A
Réf:
291 034
ENGLISH 17
WARNING:
Not to measure a Voltage higher than 1000V. A reading might be
available but it may result in damage to the internal circuit.
4.2 AC Voltage Measurement (ACV)
1) Insert red test lead into "V/ Ω " jack and black test lead into "COM" jack,
2) Set Function/Range Selector to "Required Range". Set AC/DC Selector to
"AC". If the value of voltage to be measured is unknown, select the
maximum range first and reduce the range step by step until a satisfactory
reading is obtained.
3) Connect bath points of the tested voltage firmly with the test leads and the
tested voltage value shall show on the display immediately,
WARNING:
Not to measure a Voltage higher than 750V. A reading might be available
but it may result in damage to the internal circuit.
4.3 Current Measurement (DCA)
1) Insert red test lead into "mA" jack, (if the tested current higher than 200 mA
but less than 10A, set the red test lead into "10A" jack,) and black test lead
into "COM" jack.
2) Set Function/Range Selector to "Required Range". Set AC/DC Selector to
"DC". If the value
of
current to be measured is unknown, select the
maximum range first and reduce the range step by step until a satisfactory
reading is obtained.
3) Connect bath test leads in series with the tested return circuit firmly and the
tested return circuit current value shall show on the display immediately.
WARNING:
Turn off the circuit power to
be tested before linking the meter with the
circuit. Measurement of Voltage in this mode is forbidden.
4.4 AC Current Measurement (ACA)
1) Insert red test lead into "mA" jack, (if the tested current higher than 200 mA
but less than 10A, set the red test lead into "10A" jack) and black test lead
into "COM" jack.
2) Set Function/Range Selector to "Required Range". Set AC/DC Selector to
"AC". If the value of current to be measured is unknown, select the
maximum range at first and reduce the range step by step until a
satisfactory reading is obtained.
3) Connect both test leads in series with the tested return circuit firmly and the
tested return circuit current value shall show on the display immediately.
WARNING: Turn off the circuit power to be tested before linking the
meter with the circuit. Measurement of Voltage in this mode is forbidden.
4.5 Resistance Measurement
1) Insert the red test lead into
"
V/ Ω " jack and the black test lead into "COM"
jack.
2) Set Function/Range Selector to "Required Range". If the value of the
resistance to be tested is unknown, select the maximum range at first and
reduce the range step by step until a satisfactory reading is obtained.