Huazheng HZ-5100S User manual

HZ-5100S
Portable Contact Resistance
Tester
Huazheng Electric Manufacturing (Baoding) Co., Ltd

Dear user:
Thank you for choosing HZ-5100SPortable Contact Resistance Tester.
We hope that this instrument can make your work easier and more
enjoyable, so that you can get the feeling of office automation in the test
and analysis work.
Before using the instrument, please read this manual, and operate and
maintain the instrument according to the manual to prolong its service life.
"Just a light press, the test will be completed automatically" is the
operating characteristics of this instrument.
If you are satisfied with this instrument, please tell your colleagues;
if you are not satisfied with this instrument, please call [phone] to
tell you to serve you at all times-Baoding Huazheng Electric Manufacturing
Co., Ltd., our company will definitely make you satisfied !

Important Note
If the instrument is not in use, please turn off the power in time.
If the instrument is not used for a long time, please charge and discharge regularly.
Batteries should be charged and discharged at least once a month.
It is strictly forbidden to use power shortage, which will severely shorten the battery
life and even make the battery scrap. When the instrument is short of power, the power
supply should be switched off and charged immediately. Avoid battery failure due to
excessive battery discharge time.
Charging lamp: the charging lamp on the charger is bright red during charging and
bright green after charging.
Users must not disassemble the instrument and replace the battery without
authorization. When the instrument or battery fails, please return to the factory.

Contents
I.Introduction.....................................................................................................................................1
II.Packaging Content...................................................................................................................... 1
III.Features........................................................................................................................................1
IV.Technical Index............................................................................................................................2
V.Adjust The Wristband.................................................................................................................. 3
VI.Battery Charging.........................................................................................................................3
VII.Tilt Hand-held Tester.................................................................................................................3
VIII.Product Appearance................................................................................................................ 4
IX.Operation Instructions............................................................................................................... 5

1
I.Introduction
The hand-held Circuit resistance tester is an innovative product. The product is
compact, hand-held operation, battery power supply, easy to carry.
The product is mainly used in the measurement of contact resistance and other
micro-Euclidean resistance of switch contacts. The test speed is fast and the accuracy is
high.
II.Packaging Content
After receiving the packing box, open the packing box and check if there is any
damage. If the freight packing box is damaged or the liner material is indented, please
inform the freight company or our salesman immediately.
Please check if you have received the following items in the product package：
√1 Hand-held Circuit resistance tester
√1 sets of test lines (red and black each)
√1 charger
√1 user manual
√1 copy of certificate and factory test report
√1 standard resistor
√1 external printer（optional）
III.Features
Lithium battery power supply, a charge can be continuously tested more
than 600 times, the test process is simple and convenient.
The maximum output current is 100 A, multi-stage current is optional, and
the test range is wide.
When doing 100A test, the longest test time can be up to 60 seconds, which
can satisfy various field applications.
The measuring range is wide and the precision is high. At 100A, it can

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reach 2000μΩ.
Has the open circuit protection, overheating protection and so on perfect
protection function.
5. 6 inch super-industrial-grade high-brightness color LCD screen, in strong
sunlight display is still clearly visible.
Equipped with external printer, easy to print data.
With native storage and USB disk storage, easy to save data.
IV.Technical Index
Measuring Range
Output Current
100A、80A、50A、30A
Measuring
Range
100A 0~2000µΩ
80A 0~5mΩ
50A 0~10mΩ
30A 0~20mΩ
Technical Index
Accuracy
±（Reading×0.5%+1µΩ）
Resolution
Ratio
0.1µΩ
Display Digit
Four and a half
Test Power
Supply
Constant current limit voltage，about 2V
Input Voltage
Maximum 5V
Measuring
Time
Quick、10~60 seconds optional
Testing Times
More than 600 times（full charge, fast measurement mode）
Test Line
Resistance less than 10mΩ
Conditions Of Use and Shape
working Power
Supply
Built-in lithium battery or external charger，Charger input 100~240VAC，
50HZ/60HZ
Charging
Voltage
12.6V
Charging
Current
≤3A
Charging Time
Abour 3 hrs
Auto Shut Off
5 minutes automatic shutdown without
operation
Instrument
Weight
1.7kg（exclude
test lines）
Instrument
Dimension
246mm（L）×156mm（W）×62mm（H）
Environment
Temperature
-10℃~50℃
Relative
Humidity
≤90%，no dew

3
V.Adjust The Wristband
For better grip, strip the belt and adjust the adhesive tape as shown in the following
figure.
VI.Battery Charging
When the battery is low after long storage or before the first use of the hand-held
device, please use the charger attached to it to charge the battery for at least 3 hours,
and continue to use the hand-held tester when charging. When the battery is fully
charged, the charger light changes from red to green.
VII.Tilt Hand-held Tester
In order to take the instrument or expose the side interface during operation, the
hand-held tester can be tilted, as shown in the figure below.
Lift the tilt seat and pull outward

4
VIII.Product Appearance
Top view
Front View Side View
Function
module
Instructions
I+、I-
Current output terminal, maximum output 100A.
U+、U-
Voltage input jack, maximum input 5V.
Display
5.6 inch large industrial high brightness color LCD screen, display
operation menu and test results.
Button
Operate instruments. “↑↓” is the "up and down" key, select to move or
modify data; “←→” is the "left and right" key, select to move or
modify data; "Enter" key, confirm the current operation; "Cancel" key,
abandon the current operation.
Instrument power key. Short press to turn on the power supply, long
press to turn off the power supply. If there is no key operation, the
instrument will shut down automatically after 5 minutes.
RS 232
Connect external printer.