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Maxwell Digital Multimeters 25211 User Manual page 3

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To change between auto- or manual range modes. In
manual mode, you can select different ranges.
Press the button repeatedly to select different ranges.
SELECT button
While measuring, you can select AC current (alternate
current) or DC (direct current) functions by this button.
 button
Backlight turn on/off. Pressing this button for 2 secs,
the backlight can be turned on and will remain on until
another press.
Turn the backlight off, press again for 2 secs, or wait un-
til 20 secs and the backlight will turn off automatically.
M
easUreMents
Voltage Measurements
Turn the rotary switch to V
Voltage) mode.
Connect the black test lead to the „COM" terminal, and
the red test lead to the "V" terminal.
Connect the probes to the desired test points of the cir-
cuit and measure the voltage.
Read the measured voltage on the display. The polarity
of the red test lead will be displayed on the screen (only
the negative).
Warning: To avoid electric shock or any damage, never
operate the Meter more than 600V DC or 600V AC RMS
voltage.
Resistance Measurements
Turn the rotary switch to Ω position.
Connect the black test lead to the „COM" terminal, and
the red test lead to the "V" terminal.
Connect the probes to the desired resistance end points
of the circuit.
Read the measured resistance on the display.
Note: If the resistance is lower than about 20MΩ, some
seconds will be needed for the Meter to measure the re-
sistance correctly.
If the resistance is more than the maximum measure-
ment range, the "OL" sign will appear on the display.
Warning: To avoid possible damage to the Meter or elec-
tric shock, disconnect circuit power and discharge all
high-voltage capacitors before measuring resistance!
Continuity Tests
Turn the rotary switch to
Press the „SELECT" button twice, the display will show
the
sign.
Connect the black test lead to the „COM" terminal, and
the red test lead to the "V" terminal.
Connect the probes to the desired test points of the
circuit. If the resistance is under 70Ω, the beeper will
sound.
Note: The Continuity Test can be used to test an open
or closed circuit.
Warning: To avoid possible damage to the Meter or
electric shock, disconnect circuit power and discharge
all high-voltage capacitors before measuring resistance.
(DC voltage) or V~ (AC
position.
Diode Tests
Turn the rotary switch to
Press the „SELECT" button, the display will show the
sign.
Connect the black test lead to the „COM" terminal, and
the red test lead to the "V" terminal.
Connect the red probe to the anode side and the black
test lead to the cathode side of the diode being tested.
The approx. forward voltage drop of the diode will be
displayed. If the connection is reversed, the „OL" sign will
appear on the screen.
Warning: To avoid possible damage to the Meter or elec-
tric shock, disconnect circuit power and discharge all
high-voltage capacitors before measuring resistance.
Measuring Current
Turn the rotary switch to µA, mA or A mode.
Disconnect circuit power and discharge all high-voltage
capacitors before measuring resistance.
Press the „SELECT" button to select the DC (direct cur-
rent) or AC (alternate current) measuring modes.
Connect the black test lead to the „COM" terminal, and
the red test lead to the "mA" terminal until max. 200mA
range, or to the A terminal to a max. 10A range.
Connect the Meter in series to the circuit.
Read the measured current on the display.. If you meas-
ure DC current continuously, the polarity of the red cable
will also be displayed on the screen (only the negative).
If the „OL" sign appears on the display, and the beeper
sounds continuously, turn the rotary switch to a higher
volume.
Warning: Before you use the meter, inspect the test leads.
Do not apply more than the rated voltage, as marked on
the Meter, between terminals or between any terminal
and earth ground to avoid any damage.
Temperature Measurement
Turn the rotary switch to ºC/°F position.
Insert the type K connector to the Meter. Connect the red
test lead to the "V" terminal, and the black test lead to
the „COM" terminal. Press the „SELECT" button to select
the temperature measure (ºC or °F.)
Touch the temperature probe head to the part whose
temperature you wish to measure, or place the Meter to
the place that you want to measure.
Read the measured temperature in the display.
Warning: To avoid electric shock, do not operate the
temperature probe in electrical environment and do not
measure in microwave. Be aware when measuring tem-
perature as the measured surface can burn you or can
cause any injury because of the high temperature.
NCV (Non-Contact-Voltage) – Detector
Turn the rotary switch to NCV position. Hold the top of
the meter close to the voltage source. If voltage is pres-
ent, an audible warning will sound and the LED light
will flash.
Presence of Phase Detector Function: connect the red
test lead to the "V" terminal then touch the naked end
of the cable. If phase is present, an audible warning will
sound and the LED light will flash.
Warning: without direct connection, the detector
cannot measure the correct range because the meas-
EN
User Manual
position.

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