30
KPS-MT40 • Digital multimeter
ENG
and 1000V; AC voltage measuring range of this meter: 200mV 2.000V, 20.00V,
200.0V and 750V.
To measure AC and DC voltage:
1 Rotate switch to the appropriate position.
2 Respectively connect black and red test probe to COM input socket and V
input socket.
3 Measure the voltage of circuit to be tested with other two ends of test pro-
bes. (Connected with the circuit to be tested in parallel)
4 Read the measuring voltage value from LCD display. When measuring DC
voltage, the display will simultaneously show the voltage polarity which is
connected with red test probe.
3.2.2 Measuring resistance
Resistance is resistance force of current. The unit of resistance is ohm (Ω).
Resistance range of this meter: 200.0Ω, 2.000kΩ, 20.00kΩ, 200.0kΩ, 2.000MΩ,
20.00MΩ, 200.0 MΩ.
To measure resistance:
1 Rotate switch to the appropriate position.
2 Respectively connect black and red test probe to VΩ input socket and V
input socket.
3 Measure the resistance value of circuit to be tested with other two ends of
test probes.
4 Read the measuring resistance value from LCD display.
Here are some tips for measuring resistance:
•
The resistance measured on circuit is usually different from the rated value
of resistance. This is because the test current of the meter will flow through
all possible channels between test probes.
• When measuring low resistance, in order to accurately measure, make a
short circuit between two test probes to read the resistance value when short
circuited. This resistance value should be subtracted after measuring the
resistance to be tested.
• At grade 20MΩ and 200 MΩ, the reading will be stable after several se
-
conds. A high resistance measuring is normal.
• When there is no input (for example, in an open circuit), the display will show
“1”, which means that the measured value is out of range.
