YATO YT-73091 Manual De Instrucciones página 9

GB
each use check the conditions of the meter and the measurement cables. If any damage is detected, it is prohibited to operate the
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 batteries
The multimeter is powered with 2 1.5 V AAA batteries. It is recommended to use alkaline batteries. In order to install the batteries,
open the housing of the device removing the screw fixing the battery compartment cover at the bottom of the meter. Connect the batter-
ies in accordance with the marking of the terminals, close the housing and turn the knob. If the battery symbol is displayed, the battery
must be replaced. For the sake of precision of measurements, it is recommended to replace the batteries as soon as possible once the
symbol of battery has been displayed. Always replace all the batteries, do not mix new and used batteries.
Button „FUNC."
The purpose of the button is to change the measured quantity or the unit. The button is active solely with some settings of the selec-
tor.
Button „RANGE"
The purpose of the button is to manually change the measurement range for the given quantity. When it is pushed „AUTO" disappears
from the display. If it is pushed again the range is changed in the sequence indicated in the table. If the button is held for approximately
1 second, then the automatic range selection is restored.
Button „DATA H"
The purpose of the button is to hold the measured value in the display. If the button is pushed the value remains in the display, even if
the measurement has concluded. In order to return to the measurement mode push the button again. The function is signalled in the
display of the meter with „DATA H".
Button „MAX H"
The purpose of the button is to hold in the display the highest measured value. If the button is pushed, the highest measured value will
remain in the display, even if the measurement has concluded. In order to return to the measurement mode push the button again. The
function is signalled in the display of the meter with „MAX H". Attention! The function is not available for all the measurement values.
Button „*"
The purpose of the button is to illuminate the display of the meter. In order to activate the function push and hold the button for ap-
proximately 2 seconds. Push the button again to deactivate the function. Illumination is turned off automatically after approximately
15 seconds.
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, four 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. In case the symbol „OL" is displayed, the measurement
range has been exceeded, and it is necessary to increase the measurement range. In case of measurements of quantities of unknown
values the meter should be switched to „AUTO", where it will automatically determine the adequate measurement range.
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 „VΩ" 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
O P E R A T I N G M A N U A L
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