ProfiScale MULTI PS 7455
Englisch
33
Measuring of direct current
Attention!
Turn off the power of the about to be measured circuit before
connecting the meter and make sure that all capacitors are fully discharged.
Always check fuses prior to current measurements.
• For a max. current measuring of 200 mA, please connect the black
measurement line to the ground jack COM and the red one to the input jack.
For a max. measurement of 10 A, please remove the red measurement line and
connect it to the 10 A jack.
• Turn the selector switch to the desired measuring range μA, mA, or A.
Determine the measuring range manually with the help of the RAN button or
use the pre-set automatic measuring range option.
• Connect the measurement lines for measuring a current only in series with the
current source, only then activate the circuit.
• The polarity of the red measurement line connection is displayed on the LCD
display.
• If a too low measuring range that is being exceeded during measuring is being
selected manually, “OL” appears on the display. Then, please select a higher
measuring range.
• With the input jack of 200 mA, the max. input current should not exceed
200 mA as an overvoltage may damage the fuse. With a higher current, the
input jack 10 A for max. 10 A input current needs to be used.
Measuring of alternating current
Attention!
Turn off the power of the about to be measured circuit before
connecting the meter and make sure that all capacitors are fully discharged.
Always check fuses prior to current measurements.
• For a max. current measuring of 200 mA, please connect the black
measurement line to the ground jack COM and the red one to the input jack.
For a max. measurement of 10 A, please remove the red measurement line and
connect it to the 10 A jack.
• Turn the selector switch to the desired measuring range μA, mA, or A. Press
“FUNC” to select alternating current measuring. Determine the measuring
range manually with the help of the RAN button or use the pre-set automatic
measuring range option.
• Connect the measurement lines for measuring a current only in series with the
current source, only then activate the circuit.
• The measured values are displayed on the LCD display.
• If a too low measuring range that is being exceeded during measuring is being
selected manually, “OL” appears on the display. Then, please select a higher
measuring range.
• With the input jack of 200 mA, the max. input current should not exceed
200 mA as an overvoltage may damage the fuse. With a higher current, the
input jack 10 A for max. 10 A input current needs to be used.
Measuring electrical resistance
Attention!
Make sure when measuring internal resistance that the about to be
measured object is volt-free and that all capacitors are fully discharged.
• Connect the black measurement line to the ground jack COM and the red line
to the input jack.
• Turn the selector switch to the measuring range
Ω
. Determine the measuring
range manually with the help of the RAN button or use the pre-set automatic
measuring range option.
• Connect the measurement lines for measuring the resistance parallel to the
measured resistance.
• The measured values are displayed on the LCD display.
• With a disconnection of the measuring circuit, the symbol “OL” appears on
the display. With this, the transgression of the measuring range value is being
indicated.
Please note!
During the measuring of a resistance, a slight deviating value to
the data of the resistance can be displayed as the test current of the Multimeter
runs parallel to the measured circuit. To increase the accuracy during measuring
smaller resistances, connect both of the measurement lines short-time at first and
note down the value. Afterwards, subtract the value from the value of the actual
resistance measurement.
