Shenzhen Kejie Instrument Co., Ltd. KJ2815B User manual

KJ2815B/KJ2817B
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 KJ2815B/KJ2817B (hereafter referred
to as “the Meter”) are 3 3/4 digits with steady operations,
fashionable structure and highly reliable hand-held measuring
instrument. The Meter uses large scale of integrated circuit with
high performance A/D converter as its core and has full range
overload protection.
The Meter can measure AC/DC Voltage, AC/DC Current,
Resistance, Capacitance, Diodes, Continuity, Frequency
(KJ2817B only) , Duty cycle (KJ2817B only), Temperature
(KJ2817B only) and so on. Backlight function also provided for
both two model, it is convenient for operating in dark environment.
They are both 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
zTestLead 1pair

2
z2*1.5V AAA Battery 2 pieces
zTemperature probe 1 pieces (KJ2817B only)
In the event you find any missing or damage, please contact
your dealer immediately.
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.II
1000V,CAT.III 600V) and double insulation.
CAT.II: Local level, appliance, PORTABLE EQUIPMENT
etc., with smaller transient overvoltages than CAT.III.
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:

3
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
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 1000V 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

4
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.
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.