Nearly every electrical engineer has a hand held digital clamp meter
(Tongtester). We sometimes take them for granted, until we damage them
or “burn them out”. If you incorrectly connect your clamp meter to a circuit,
or if you have the clamp meter 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.
Clamp meter 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 clamp meter becomes a low impedance circuit element.
Even if you correctly insert your clamp meter in to the circuit, you can
still damage your meter. Don’t try to measure current in excess of your
meter’s capacity. Check the current capacity of the Clamp meter.
If you are measuring current in industrial environment to prevent
excess current from flowing through your meter, always disconnect your
test leads from the circuit under test whenever you change Clamp meter
functions. Set your meter to the correct function, say current, and its
highest range for the setting. If the reading is small, change the range to
the next lower range till the reading can be read with the best possible
accuracy. When measuring voltage, connect the test leads before your
apply power to your 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
Safety .......................................................................................01
Terms in this Manual ................................................................02
Electrical Symbols ...................................................................03
General Specifications .............................................................04
Electrical Specifications ..........................................................06
Product Discription ...................................................................10
Operation ..................................................................................11
Maintenance ............................................................................ 17
Cleaning & Storage ..................................................................18
Battery Replacement ...............................................................18
Test Certificate .........................................................................19
Warranty ..................................................................................20
