YATO YT-73082 Manual De Instrucciones página 9

PL GB
device. Damaged cables must be replaced. In case of any doubts, consult the manufacturer. During measurements keep the measure-
ment cables and leads by the insulated parts. Do not touch the places of measurement or the sockets of the meter which are not being
used. Before the measured quantity is modified, disconnect the measurement cables. Do not realize any maintenance tasks without
making sure the measurement cables have been disconnected from the meter, and the meter itself has been turned off.
Replacement of the battery
The multimeter is powered with a 9V 6F22 battery. It is recommended to use alkaline batteries. In order to install a battery, open the
housing of the device removing the screws at the bottom of the meter. Connect the battery in accordance with the marking of the termi-
nals, close the housing and replace the screws. If the battery symbol is displayed, the battery must be replaced. For the sake of preci-
sion of measurements, it is recommended to replace the battery as soon as possible once the symbol of battery has been displayed.
Replacement of the fuse
The device is equipped with a fast F250mA/250V (Ø5x20mm) fuse. If the fuse is damaged, it must be replaced with a new one of the
same electrical parameters. To do so, open the housing of the meter and proceed as in the case of replacement of the battery, observ-
ing the safety principles, to replace the fuse.
Switch button
The function of the button is to turn the meter on and off. If no measurement is realised, the selector remains in the same position, and
no other button is pushed, the meter will turn out automatically after approximately 15 minutes.
Button „HOLD"
The button „HOLD" permits to hold the measured value in the display. If the button is pushed the displayed value will remain in the
display even when the measurement is finished. In order to return to the measurement mode push the button again.
Connection of the test leads
Remove the protection caps from the plugs and connect them in accordance with the instructions. Then remove the protections of the
measurement part and proceed to measurements.
MEASUREMENTS
Depending on the actual position of the range switch in the display three significant digits will be displayed. If it is necessary to replace
the battery the multimeter indicates this displaying the battery symbol. If before the measured value the "-" symbol is displayed then the
measured value has an opposite polarization in relation to the connection of the meter. If only "1" is displayed, then the measurement
range is exceeded, and it is necessary to increase the measurement range. In case of measurements of quantities of unknown values,
set the highest measurement range and only after the initial measurement change the measurement range to the required one.
ATTENTION! The measurement range of the meter must not be lower than the measured value. It might damage the meter
and cause an electric shock.
The correct connection of the leads:
The red lead must be connected to the socket marked as „V/Ω", „mA" or „10A"
The black lead must be connected to the socket marked as „COM"
In order to ensure the highest possible precision of the measurements the optimum measurement conditions must be observed: ambi-
ent temperature between 18°C and 28°C and relative humidity <75 %
Determination of precision
Precision: ± % of the indication + weight of the least significant digit
Measurement of the direct voltage: 1,396 V
Precision: ± (0,8% + 5)
Calculation of the error: 1,396 x 0,8% + 5 x 0,001 = 0,011168 + 0,005 = 0,016168
Result of the measurement: 1,396 V ± 0,016 V
Measurements of voltage
Connect the measurement cables to the sockets marked as „V/Ω" and „COM". Switch the range selector to the position of the meas-
urement of the direct voltage or alternating voltage. Select the maximum measurement range, connect the measurement cables in
parallel to the electric circuit and read the result of the measurements of the voltage. In order to ensure more precise results of the
measurement you may change the measurement range. Do not ever measure a voltage exceeding 1000 V in case of measurements
of the direct voltage and 750 V rms (square average) in case of measurements of the alternating voltage. It might damage the meter
and cause an electric shock.
O P E R A T I N G M A N U A L
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