KJ KJ39E Bedienungsanleitung
KJ39E
Digital Multimeter
Operation Manual
1
Overview
This Operating Manual covers information on safety
and cautions. Please read the relevant information
carefully and observe all the Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read the
“Safety Information” and rules for safe operation
carefully before using the Meter.
Digital Multimeter Model KJ39E(hereafter referred to as “the
Meter”) is 3 1/2 digits with steady operations, pocket size,
fashionable structure and highly reliable hand-held
measuring instrument. The Meter uses large scale of
integrated circuit with double integrated A/D converter as its
core and has full range overload protection.
The Meter can measure AC/DC Voltage, DC Current,
Resistance, Diodes, Continuity and so on. It is ideal tool for
users.
Unpacking Inspection
Open the package case and take out the Meter. Check the
following items carefully to see any missing or damaged part:
zOperating Manual 1 piece
zTest Lead 1 pair
z9V Battery (6F22 or equivalent) 1 piece
In the event you find any missing or damage, please
contact your dealer immediately.
2
Safety Information
In this manual, a “ Warning” identifies conditions and
actions that pose hazards to the user, or may damage
the Meter or the equipment under test.
A “Note” identifies the information that user should pay
attention to.
This Meter complies with the standards IEC 61010-1: in
pollution degree 2, overvoltage category (CAT.III 600V) and
double insulation.
CAT.III: Distribution level, fixed installation, with smaller
transient overvoltages than CAT.IV
Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.
Warning
To avoid possible electric shock or personal injury,
and to avoid possible damage to the Meter or to the
equipment under test, adhere to the following rules:
zBefore using the Meter inspect the case. Do not use
the Meter if it is damaged or the case (or part of the
case) is removed. Look for cracks or missing plastic.
Pay attention to the insulation around the connectors.
zInspect the test leads for damaged insulation or exposed
metal. Check the test leads for continuity. Replace
damaged test leads with identical model number or
3
electrical specifications before using the Meter.
zDo not apply more than the rated voltage, as marked on
the Meter, between the terminals or between any terminal
and grounding. If the value to be measured is unknown,
use the maximum measurement position and reduce the
range step by step until a satisfactory reading is obtained.
zWhen measurement has been completed, disconnect the
connection between the test leads and the circuit under
test, remove the testing leads away from the input
terminals of the Meter and turn the Meter power off.
zThe rotary switch should be placed in the right
position and no any changeover of range shall be made
during measurement is conducted to prevent damage of
the Meter.
zDo not carry out the measurement when the
Meter’s cover is not closed to avoid electric shock.
zDo not input higher than 600V between the Meter’s
terminals and the grounding to avoid electric shock and
damages to the Meter.
zWhen the Meter working at an effective voltage
over 60V in DC or 30V rms in AC, special care
should be taken for there is danger of electric
shock.
zUse the proper terminals, function, and range for your
measurements.
zDo not use or store the Meter in an environment of high
temperature, humidity, explosive, inflammable and strong
magnetic field. The performance of the Meter may
deteriorate after dampened.
4
zWhen using the test leads, keep your fingers behind the
finger guards.
zDisconnect circuit power and discharge all high-voltage
capacitors before testing resistance, continuity and diode.
zReplace the battery as soon as the low battery indicator
“”appears. With a low battery, the Meter might produce
false readings that can lead to electric shock and personal
injury.
zWhen servicing the Meter, use only the same model
number or identical electrical specifications
replacement parts.
zThe internal circuit of the Meter shall not be altered at will
to avoid damage of the Meter and any accident.
zSoft cloth and mild detergent should be used to clean the
surface of the Meter when servicing. No abrasive and
solvent should be used to prevent the surface of the Meter
from corrosion, damage and accident.
zThe Meter is suitable for indoor use.
zTurn the Meter off when it is not in use and take out the
battery when not using for a long time.
zConstantly check the battery as it may leak when it has
been using for some time, replace the battery as soon as
leaking appears. A leaking battery will damage the Meter.
International electrical symbols
Double Insulated. Grounding.
Low battery indicator Diode.
5
DC(Direct Current).
Continuity Test.
AC (Alternating
Current).
Warning. Refer to the Operating Manual.
Conforms to Standards of European Union.
The Meter Structure (see figure 1)
1. LCD Display
2. Backlight button
3. Rotary Switch
4. Transistor hFE test socket
5. Input Terminals
6. Data HOLD button
Figure 1
6
Function description
Rotary switch position Description
DC voltage measurement
V～AC voltage measurement
ΩResistance measurement
Diode test
Continuity test
DC current measurement
hFE Transistor hFE test
Buttons
Data hold button
Backlight button
Measurement Operation
DC/AC Voltage Measurement
To measure DC/AC voltage, connect the Meter as follows:
·Set the rotary switch to desired or V～ range.
·Connect the RED test lead into “VΩmA” input terminal and
BLACK test lead into “COM” input terminal.
·Connect the test leads across with the object being
measured.
·Read the value from display. AC voltage reading is effective
value of sine wave (mean value response).
·Press HOLD button if need.
7
Warning
a) To avoid harms to you or damages to the Meter from
electrical shock, do not attempt to measure voltages
higher than DC /AC 600V rms, although readings may be
obtained.
b) When the Meter working at an effective voltage over
60V in DC or 30V rms in AC, special care should be taken
for there is danger of electric shock.
c) When the measurement has been completed,
disconnect the connection between the testing leads and
the circuit under test and remove testing leads from the
input terminals.
DC current Measurement
To measure DC current, connect the Meter as follows:
·Set the rotary switch to desired range.
·Connect the RED test lead into “VΩmA” or “10A” input
terminal and BLACK test lead into “COM” input terminal.
·Connect the test leads in series with the circuit being
measured.
·Read the value from display.
·Press HOLD button if need.
Warning
a) If magnitude of the current is unknown, always
start with the highest range and reduce until satisfactory
8
reading is obtained.
b) If “1” or “-1” is shown on the LCD, it means the Meter is
overloaded, then set the measuring range to higher.
c) The protection of mA input terminal : Self-Healing Fuse,
and 10A /250V Fast.
d) When the measured current is more than or equal to
10A, the continuous measurement time is 10 seconds
maximum and interval time between 2 measurements
greater than 15 minutes.
e) Remember to cut off the power supply of the circuit be
measured before connect it.
f) Do not apply any voltage to the input when the Meter is
working in current measuring mode.
g) When the measurement has been completed,
disconnect the connection between the testing leads
and the circuit under test and remove testing leads from
the input terminals.
Resistance Measurement
Warning
To avoid damages to the Meter or to the devices
under test, disconnect circuit power and discharge
9
all the high-voltage capacitors before measuring
resistance.
To measure resistance, connect the Meter as follows:
·Set the rotary switch to desired Ωrange.
·Connect the RED test lead into “VΩmA” input terminal and
BLACK test lead into “COM” input terminal.
·Connect the test leads across with the object being
measured.
·Read the value from display.
·Press HOLD button if need.
Warning
a) Do not apply any voltage to the input when the Meter is
working in resistance measuring mode.
b) If resistance of the circuit or resistor be measured is
open or higher than the range be selected the display
will show “1”.
c) For low resistance measurement, it maybe make
some additional error due to the resistance of the test
leads, at this case, as a tip you can short the test leads
firstly and record down the resistance, then subtract it
from the measuring value to obtain the more accurate
result. If the short resistance of the test leads is up to
0.5Ω, it is need to double check if the test leads are
loosened or other troubles exist.
d) It is normal for taking a couple of seconds to get the
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