Cojali Jaltest JT2003 User manual
JT2003
Professional Multimeter
User Manual
Dear Customers:
Thank you for purchasing this brand new Jaltest instrument. For the purpose of using the instrument
properly, we ask you to read this instruction manual carefully and thoroughly before putting this
instrument into service, especially the sections related with “Safety Precautions”. After you have read this
instruction manual thoroughly, we suggest you place this instruction manual at a convenient location for
future reference.
Cojali S. L. will guarantee this product is free from any defect in material and process within one year from
the date of purchase. This warranty is not applicable to fuses, disposable batteries, or any damage resulted
The repair or replacement of a defective item does not change the start date of the warranty period of the
whole product, which will be of one year. Under no circumstances shall the Seller be responsible for the
repairing carried out by staff not belonging to its organization.
If warranty service is required within warranty period, please contact your nearest service center authorized
by Cojali S. L. to obtain authorized information on return of the product; then send the product together
with the description of problems to that service center. This warranty is the only compensation that you
can obtain.
Otherwise, Cojali S. L. will not provide any expressed or implied guarantee, such as the implied guarantee
damage or loss that is caused by any reason or speculation.
Cojali S. L. is not responsible for any damages caused by its guaranteed products. That is, Cojali S. L. is only
responsible for the restitution of the damaged product. The Seller shall not be responsible, in any case, for
the defects in the supplied goods for a period exceeding one year from the start of the warranty period for
Jaltest products.
Preface
Limited Warranty Liability
JT2003
Professional Multimeter
User Manual
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Table of Contents
Title Page
I. Overview 4
II. Features 4
III. Accessories 5
IV. Safe operation rules 6
V. Electrical Symbols 9
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Professional Multimeter
User Manual
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voltage or current, resistance, diode, circuit continuity, capacitance, frequency, duty ratio,
temperature, and motor phase voltage.
6. Full function measurement error protection, enabling to sustain lightning impulse voltage
I. Introduction
II. Features
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Professional Multimeter
User Manual
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Open the package box, take out the meter, and check whether the following accessories are
missed or damaged.
If any is missing or damaged, please contact your supplier immediately.
more accurate measurement and detect ghost voltage.
measurement.
brightness of environment.
III. Accessories
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Professional Multimeter
User Manual
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1. Safety Certication
Double insulation safety standard
2. Before Operation
Prior to operating this instrument, read this instruction manual carefully and follow the
requirements. Store this manual in a proper place so as to refer to it when necessary. Send
this manual with the instrument to all subsequent users.
3. Safety Instructions and Precautions
This instrument can be operated and maintained only by trained professionals.
preventive measures should be taken.
connected should be taken into consideration.
IV. Safe Operation Rules
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Professional Multimeter
User Manual
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Only the restrained control area on this instrument can be touched, the display elements
should not be covered.
If it becomes necessary to open the instrument to replace the fuse, it should be conducted
the instrument, and disconnect all circuit connection.
Do not modify this instrument without authorization.
guaranteed claim from the manufacturer.
Do not use this instrument in a explosive environment.
Prior to use, always inspect whether the instrument is in peak operating sequence or not.
Carry out measuring by connecting the instrument with a given power supply.
It is forbidden to use this instrument if the battery compartment is open.
Inspect the batteries before use or replacement.
The storage space should be kept dry.
In case of battery leakage, do not use this instrument before our customer service
department carries out inspection.
burn if battery leaks.
In case the battery acid contacts with your skin or clothing, immediately wash with large
amount of water thoroughly. If the battery acid enters your eyes, wash them immediately
with a large amount of water and seek medical advice in time.
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Professional Multimeter
User Manual
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In conditions that cannot guarantee the safety of operator and those around, stop using
this instrument. For example:
The case is smashed
Test leads are damaged
Battery leakage
Storage in improper place for a long time
4. Range of Applications
This instrument complies with standard of CAT Ill measuring category and rated voltage of
CAT Ill measuring category is used in three phase distribution circuit, such as indoor
commercial lighting circuit, industrial equipment switchboard, multiphase motor and
multiphase electrical systems.
This instrument complies with standard of CAT IV measuring category and rated voltage
device before the power instruments, instruments of equipment connected with outdoor
building.
The rated voltage for probe assembly used in main line measurement should comply
maximum voltage of the circuit to be measured.
deviation from this application should be considered to be improper and not inspected,
and may result in accident or damage to the instrument.
Any improper use may completely void the claim to the supplier and the right of warranty.
The manufacturer will not be liable for property damage and personal injury caused by
the following reasons:
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Professional Multimeter
User Manual
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It is not allowed to use this instrument in following conditions:
Double Insulation
Grounding
In compliance with the directive of European Union
Tested and approved by TUV Product Services
V. Electrical symbols
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Professional Multimeter
User Manual
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Symbol Description Symbol Description
5
6
7
4
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Professional Multimeter
User Manual
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Symbol Description Symbol Description
9 µA,mA,A
Ampere
AC Low Impedance nF,µF,mF
%
Positive Direction of Phase Sequence
Value
XXXX
Set Value
Auto Backlight H XX:XX
Value
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Professional Multimeter
User Manual
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0L
6. Others.
Polarity: Automatic
9. Low Battery: LED displays or symbol
VI. Comprehensive Specications
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Professional Multimeter
User Manual
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4. Function selection switch
6. Strap hook
7. Flashlight window
VII. Overall Conguration
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Professional Multimeter
User Manual
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VIII. Function Selection, Button Denition, and Dual Display Mode
Features Description
Ω
Hz
%
LPF
LoZ
MOTOR
AC + DC
OFF Turn off the power
1. Feature Selection
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Professional Multimeter
User Manual
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2. Button Denition
is pressed once, and jump to minimum range when pressing at maximum range. If this
press it again to display the minimum value, and press it again to display maximum and
disc, it will exit the data record mode.
reference, the different value between measurement value and reference value will be
measurement mode.
Button: Auto turn off backlight function. If you need to restart the backlight
function, turn function knob to OFF position and restart.
PEAK
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Professional Multimeter
User Manual
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3. Operation Instruction of Dual Display Mode:
can measure the surge of the power supply much more accurately, the transient value of
surge.
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Professional Multimeter
User Manual
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4. Motor rotation direction and phase sequence measurement
In ACV mode, main display shows ACV value, the secondary display shows frequency.
value and the secondary display shows frequency.
secondary display shows operation frequency.
measurement.
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Professional Multimeter
User Manual
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there is no input.
will time out in 5 seconds.
a.
b.
c.
5. PEAK Value Measurement
Press PEAK button in ACV mode to enter peak measurement mode: main display shows
exit peak measurement function.
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Professional Multimeter
User Manual
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Put in parallel the meter to the load for measurement.
1. AC/DC Voltage Measurement (See Figure 1)
replace the batteries in time. In addition, attention should be paid to the symbol beside
the probe sockets, this is to warn you of not exceeding the indicated number for the
measured voltage or current so as to guarantee the measurement safety.
IX. Measurement Operating Instruction
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Professional Multimeter
User Manual
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Put in parallel the meter to the load for measurement.
the combined sine wave signal generated by the inverter and variable frequency motor.
2. Low Pass Filter (LPF) Measurement
This manual suits for next models
1
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