Operation - Maxwell Digital Multimeters 25109 User Manual

Continuity test with audio signal
Range
Overload protection: 15 seconds maximum
250V DC/AC peak value
DC current
Range Resolution
20uA 0.01μA
200uA 0.1μA
2mA
20mA
200mA 100μA
10A 10mA
Overload protection: 200mA/250V fuse and
10A/250V fuse
Max. input current: 10A (max. 6 sec.)
Resistance
Range Resolution
200Ω
2kΩ
20KΩ
200KΩ
20MΩ
Max. open circuit voltage: 3.0V
Overload protection: 15 seconds maximum
250V RMS
o
peration
WARNING
To avoid electric shock and damage to the
device do not measure voltage exceeding 300V!
Always verify the intactness and insulation of
the measuring wires, connectors and other units
before measuring!
Description
A built-in beeper
signals if the
resistance is below
70±20Ω
Accuracy
1μA
±1.5% +3D
10μA
±2% +5D
Accuracy
0.1Ω ±0.8% +5D
1Ω
10Ω ±0.8% +3D
100Ω
10kΩ ±1.0% +15D
DC and AC voltage measuring
Connect the red measuring wire to the "VΩmA"
•
connector and the black one to the "COM"
connector.
Set the function and range switch to the desired
•
voltage position. If the voltage is unknown,
set the switch to the highest available range,
connect the wires to the device and the circuit
and reduce the range until the value shown is
correct.
DC current measuring
Connect the red measuring wire to the "VΩmA"
•
connector and the black one to the "COM"
connector. (For measuring current between
200mA and 10A connect the red wire into the
"10A" connector).
Set the RANGE switch to the desired DCA
•
position
Open the measured circuit and connect to it
•
serially.
Read the current value from the screen.
•
The "10A" function is designed for limited time
•
use only. The measuring wire should only be
connected to the circuit for the maximum of 6
seconds and allow a few seconds in between
measurements.
Resistance measuring
Connect the red measuring wire to the "VΩmA"
•
connector and the black one to the "COM"
connector.
Set the RANGE switch to the desired OHM
•
position.
Connect the measuring wires to the circuit.
•
Read the resistance value from the screen.
•
Diode measuring
Connect the red measuring wire to the "VΩmA"
•
connector and the black one to the "COM"
connector.
Set the RANGE switch to the "
•
Connect the red measuring wire to the anode
•
of the measured diode and the black one to the
cathode.
The opening voltage dropback is shown on
•
the screen in mV-s. If the diode is closing, the
screen shows "1".
EN
User Manual
" position.