YATO YT-73097 Manual De Instrucciones página 14

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MEASUREMENT PROCEDURE
Depending on the current position of the range switch, the display shows four 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 the measured value has a reversed polarity relative to the meter's connection. If an over-
load symbol appears on the display, it means that the measurement range has been exceeded and it must be increased.
If the scale of the measured value is not known, set the highest measurement range and reduce it after reading the meas-
urement value. The measurement of small quantities with a high measurement range involves the greatest measurement
error. Special care should be taken when measuring within the highest voltage range in order to avoid electrocution.
CAUTION! Do not allow the measurement range of the meter to be smaller than the measured value. This can
damage the meter and cause electrocution.
The correct connection of the cables:
The red cable goes in the jack marked VΩHz% or μAmA or 10A
The black cable goes in the jack marked COM
Ensure the optimum measurement conditions in order to achieve the highest possible accuracy of measurement. The
ranges of temperature and humidity are given in the technical data.
Example of accuracy determination
Accuracy: ± (% of the indication + weight of the least signifi cant digit)
Measurement of DC voltage: 1.396 V
Accuracy: ±(0.8% + 5)
Calculation of error: 1.396 x 0.8% + 5 x 0.001 = 0.011168 + 0.005 = 0.016168
Measurement result: 1.396 V ± 0.016 V
Voltage measurement
Connect the measurement cables to the jacks marked VΩHz% and COM. Set the main switch to the voltage measure-
ment position (V). Press the SEL button to select the type of voltage to be measured. Connect the measurement cables
in parallel to an electrical circuit and read the voltage measurement result. Never measure voltage that is higher than the
maximum measurement range. This can damage the meter and cause electrocution. After selecting the lowest meas-
urement range and when the measurement cables are disconnected, a changing measurement value can be seen on
the display. It is a normal phenomenon. To eliminate it, it is enough to connect the tips of measurement cables with each
other. While measuring the AC voltage, press the button to measure the voltage with variable frequency.
Current intensity measurement
Depending on the expected current intensity value, connect the measurement cables to the μAmA and COM jacks or
to the 10A and COM jacks. Select the appropriate measurement range using the knob. The maximum intensity of the
measured current at the μAmA jack can be 600 mA. In case of measuring current above 600 mA, connect the cable
to the jack marked 10A. The maximum intensity of current measured in the 10A jack may be 10 A. For this reason,
the measuring time for currents higher than 5 A should not exceed 10 seconds; after that, there must be a 3-5-minute
break at a minimum before the next measurement. The μAmA jack can be loaded with a maximum current of 600 mA.
It is forbidden to exceed the maximum values of current and voltage values for a given jack. The measurement
cables must be connected in series to the tested electrical circuit. Select the range and type of measured current by
means of the switch and read the measurement result. Start by selecting the maximum measurement range. In order
to obtain more accurate measurement results, change the measurement range if necessary.
Resistance or capacitance measurement
Connect the measurement cables to the jacks marked VΩHz% and COM and set the range switch to the resistance
(Ω) or capacitance (╫) measurement position. Connect the measurement cables to the terminals of the measured
element and read the measurement result. In order to obtain more accurate measurement results, change the meas-
urement range if necessary. It is absolutely forbidden to measure the resistance of components through which
O R I G I N A L I N S T R U C T I O N S
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