09
10
5. Measuring Operations
5.1 AC Voltage and DC Voltage Measurement
1.To avoid electricial shock or meter damage, any
voltage in excess of 600V DC or r.m.s AC are not
allowed to measure.
2.To avoid electricial shock or meter damage, any
voltage in excess of 600V DC or r.m.s. AC
between meter and earth aren't allowed to apply.
3.Don't measure AC/DC voltages if a motor on the
circuit is being switched ON or OFF. Large voltage
surges may occur that can damage meter.
Warning
The voltage ranges of the meter are:
DC Voltage: 400.0mV, 4.000V, 40.00V, 400.0V, 600V;
AC Voltage: 4.000V, 40.00V, 400.0V, 400.0V.600V
The method of measuring voltage is:
1.Turn rotary switch to
position.
Hz%
2.Press key and select AC or DC measuring Apply
the two ends of test leads to measure the voltage
value of circuit under test. (Paralleled with circuit
under test).
3.Read measured voltage value with LCD . When
measuring DC voltage ,the display shall display the
voltage polarity connected with red test leads at the
same time.
Notice
:
At DC 400mV and AC 4V ranges and under non-input,
the meter shall have several readings because of
outside interference, but its normal usage and
measuring accuracy will not be affected.
5.2 Resistance Measurement
In order to avoid the meter or measured equipment
from being damaged,cut off all power supply of
measured circuits and discharge all high voltage
capacitors before measuring capacitance.
Warning
The
resistance
ranges
of
the
meter
are:
400.0
Ω
,4.000k
Ω
,40.00
k
Ω
,400.0
k
Ω
,4.000M
Ω
,40.00
M
Ω
.
The method of measuring resistance is:
1.Turn rotary switch to position.
2.Press key and select
Ω
measuring range.
3.Apply the two ends of test leads to measure the
resistance value of circuit under test.
4.Read measured resistance value with LCD.
Notice:
1.Theno-line measured resistance value shall be
different from rated resistance value, because other
elements on circuit are connected with measured
resistance, which is equivalent to parallel connection
of two or multi resistances.
2.When measuring low resistance, for the measurement
accuracy, please firstly make two test leads short
circuit , here read out the displayed resistance value,
minus this displayed value from the correct counting of
measured resistance.
3.When measuring at high resistance range, the reading
can be confirmed after several seconds.
4.Under open circuit , if the meter displays “OL”, it will
show that the measured value exceeds range.
