Kusam-meco 207-MK-1 User Manual Download Page 2

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Nearly every electrical engineer has a hand held

digital multimeter (DMM). We sometimes take them
for granted, until we damage them or “burn them out”.
If you incorrectly connect your DMM to a circuit, or if
you have the DMM on wrong setting, you damage the
meter and possibly hurt yourself. You can also get into
trouble if you try to measure the voltage across a
charged capacitor.

DMM users frequently burn their meters by trying

to measure current the same way as they measure
voltage, Remember, you measure voltage across a
circuit, and current through a circuit. When you use
the  current  input,  your  DMM  becomes  a  lower
impedance  circuit  element.  If  you  accidentally
connect this low impedance path across your circuit,
you’ll  effectively  short-circuit  it.  You  can,  therefore
send high current through your meter and severely
damage it. Unless the meter has a fused input, you
can even get an explosion or fire.

Even if you correctly insert your DMM into the

circuit, you can still damage your meter. Don’t try to
measure current in excess of your meter’s capacity.
Handheld DMMs usually have a maximum current
rating of 10A or 20A.

If you are measuring current in industrial

environment, you can easily exceed those ratings.
The best way to avoid damage is to use a clamp
meter or to connect a clamp attachment to your DMM.

To prevent excess current from flowing through

your meter, always disconnect the test leads from the
circuit under test whenever you change DMM
functions, Set your meter to the correct function, say
current and its highest range for the setting, say 10A.
Next, connect the test leads before you apply power
to the circuit. To be safe, start by setting your meter to
its highest range first.

TAKE MEASUREMENT CAREFULLY AND YOU’LL

SPARE YOUR METER AND YOURSELF, SOME PAIN

Overview.....

.......................

General Specifications............................................

DC Voltage
AC Voltage
AC Current
DC Current
Resistance
Capacitance
Temperature
Frequency
Diode & Continuity
Transistor hFE
Rules For Safe Operation.......................................
International Electrical Symbols..............................
The Multimeter Structure........................................
Functional Buttons..................................................
Display Symbols.....................................................
Measurement Operation.........................................
A. DC Voltage Measurement...........................
B. AC Voltage Measurement...........................
C. AC Current Measurement...........................
D. DC Current Measurement..........................
E. Measuring Resistance................................
F. Measuring Capacitance.............................
G. Measuring Temperature.............................
H. Measuring Frequency.................................
I. Diode & Continuity Test..............................
J. Transistor hFE Test....................................
Maintenance...........................................................
Replacing the Battery
Test Certificate........................................................
Warranty..................................................................