E Lectric S Ymbols - Maxwell MX-25 401 User Manual

EN
User Manual
W !
arning
To avoid electric shock and other injury please
pay attention to the following:
Do not use the device if it is damaged. Check
•
the cover of the device before use. Pay
extra attention to the insulation near the
connectors.
Check the connecting cables, their insulation.
•
If the cables or the connectors are defective,
replace them or do not use the device.
Do not use the device if it operates improperly.
•
If you have doubts, take the device to a service
station.
Do not use the device near explosive materials
•
(gases, vapors, powders)
Do not measure higher voltage on the device
•
than indicated, not between the measuring
connectors or between one of them and the
earthing.
Verify the operation of the device before usage
•
by measuring a known voltage.
When measuring current, turn off the device
•
before connecting it to the circuit. Make sure
that the device is connected to the measured
circuit serially.
Only use the designated spare parts to repair
•
the device.
When measuring above 30V AC rms, 42V
•
peak , or 60V DC voltage pay extra atenntion,
because there is a risk of electric shock.
When measuring, connect the measuring
•
pin on the wire first, and then the one on the
device to the circuit.
Do not use the device if the battery container
•
lid or any part of the cover is missing.
To avoid incorrect measuring results, electric
•
shock and injury, replace the batteries right
after the low battery symbol is lit on the
display.
Further risks: If any of the measuring points are
connected to a dangerous voltage, this voltage
may appear on the other measuring pin as well.
Warning!
To avoid damage to the device or the measured circuit,
please note the following:
Disconnect the power cord and discharge the high
•
capacity capacitors before measuring resistance, diode
or continuity.
use the proper mode and threshold for measurement.
•
Before measuring current always check the fuses and
•
turn off the measured circuit before connecting the
device to it.
remove the device from the measured circuit before
•
changing measuring mode with the switch.
remove the device from the measured circuit before
•
taking off the cover.
General description
The MX-25 401 is a small size 3 1/2 digit
automatic threshold switching digital
multimeter which enables measuring constant
and alternating voltages, alternate and direct
currents, resistance, diode and circuit continuity.
The device has the following functions:
Automatic nullification
•
Polarity display
•
Holding the measured data
•
Overload display
•
Display panel backlight
•
Automatic off switch
•
Lamp function
•
e s
lectric yMbols
AC (alternate current)
DC (direct current)
Important security information. Read
the manual.
Dangerous voltage
Earthing
Fuse
Complies to EU directives
Double isolation
Low batter power
Diode