YATO YT-73081, Original Instructions Manual

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EN
O R I G I N A L I N S T R U C T I O N S
11
CAUTION! To avoid the risk of electric shock, disconnect the test leads and switch o ff the meter before
opening the casing.
Safety instructions
Do not operate the meter in an atmosphere with excessive humidity or in the presence of toxic or fl ammable
vapours, or in an explosive atmosphere. Before each use, check the condition of the meter and the test
leads. If you notice any faults, do not start its operation. Replace damaged cables with new ones, devoid of
defects. In the case of any doubts, you should contact the manufacturer. During measurement the test leads
should be held by the insulated parts. Do not touch the measurement points or unused measuring jacks of
the meter. Disconnect the test leads before changing the measured quantity. Never carry out maintenance
work without ensuring that the test leads have been disconnected from the meter and that the meter itself
has been switched o ff .
Replacing the battery
The multimeter requires batteries, the number and type of which are speci fi ed in the technical speci fi cations.
It is recommended to use alkaline batteries. To install a battery, open the instrument casing or the battery
compartment cover on the underside of the meter. Before accessing the battery compartment it may be
necessary to slide o ff the cover of the meter casing. Connect the battery according to its terminal marking,
close the casing or battery compartment cover. If a battery symbol appears on the screen, the battery must
be replaced. For the sake of measurement accuracy, it is recommended to replace the battery as soon as
possible after the battery symbol appears.
Fuse replacement
The instrument uses a fast-acting safety fuse. In case of damage, replace the fuse with a new one with iden-
tical electrical parameters. To do so, open the meter’s casing, following the same procedure as in the case of
battery replacement and following the safety rules, replace the fuse with a new one.
Switching the meter on and o ff
Setting the measurement switch to the OFF position will turn o ff the meter. The remaining switch positions
activate the meter and permit selection of the measured quantity and its range. The meter does not have an
auto power-o ff function after a period of the user’s inactivity, therefore you need to remember to switch it o ff
each time after the measurement is fi nished. This will reduce battery consumption.
H button (HOLD)
The button is used to retain the measured value on the display. When pressed, the button will ensure that
the currently displayed value remains on the display, even after the measurement is over. Press the button
again to go back to the measurement mode. The operation of this function is indicated on the display with
the “H” character.
* button
The button is used to light up the display of the meter. To switch on the backlight, press the button. The
backlight goes o ff automatically after several seconds.
Connecting test leads
If the test lead plugs are capped, the caps must be removed before plugging the leads into the jacks. Connect
the leads in accordance with the instructions in the manual. Now remove the covers (if any) of the measuring
parts and proceed with the measurements.
MEASUREMENT PROCEDURE
Depending on the current position of the range switch, the display will show three digits. If the battery needs
to be replaced, the multimeter indicates this by showing the battery symbol on the display. If the sign “–”
appears on the display before the measured value, it means that it has a reversed polarity relative to the
meter’s connection. If an overload symbol appears on the display, it means that the measuring range has
been exceeded and the measuring range must be changed to a higher one.
If the scale of the measured value is not known, set the highest measuring range and reduce it after reading
the measured value. The measurement of small quantities with a high measuring range involves the great-
est measurement error. If you select the highest voltage measuring range, the display will show “HV” or a