Kaiweets HT118A User manual

-
kAIWEET5
User Manual
Digital Multimeter
True-RMS
HT118A
Mode inChina
(ERoHS•!)tr'

1
Contents
SafetyInstructions.................................................................................................4
Safety Operating Procedures.......................................................................5
Cautions........................................................................................................7
Product Description..............................................................................................8
Simbol Meaning............................................................................................8
Multimeter Features..................................................................................10
FUNC. Key...................................................................................................11
Install or replace the battery.......................................................................12
Sleep Mode.................................................................................................13
Measurement Operation....................................................................................14
DC/AC voltage measurement......................................................................14
DC/ACvoltage mVmeasurement ...............................................................16

2
Frequency/Duty measurement (Hz¾) ....................................................... 18
Resistance/ Continuity/ Diode measurement .......................................... 19
Capacitance measurement........................................................................... 21
Temperature Measurement .........................................................................22
DC/AC current measurement.......................................................................23
NCV test ......................................................................................................25
Live test.......................................................................................................26
General Specifications..........................................................................................27
Accuracy Specifications................................................................................ 28
DC/ACVoltage.............................................................................................29
DC/AC Current............................................................................................. 30
Resistance/Capacitance................................................................................31
Frequency/Duty .......................................................................................... 32

3
Maintenance.......................................................................................................33
Clean......................................................................................................... 33
Replace the Fuse....................................................................................... 34
Three Year Warranty.................................................................................. 35

4
Safety Instructions
The instrument is designed according to the requirements of the international
electrical safety standard IEC61010-1 for the safety requirements of the electronic
testing instruments. The design and manufacture of instruments strictly comply with
the requirements of IEC61010-1 CAT.Ill 1000V over-voltage safety standards and
pollution level 2.
ill Warning
In order to avoid possible electric shock or personal injury and other safety
accidents, please abide by the following specifications:
•Please read this manual carefully before using the instrument, and pay special
attention to safety warning information.
•Before using the instrument, please check whether there is any crack or plastic
damage in the instrument case. If you do, do not use it again.

•Before using the instrument, please check whether the probe is cracked or
damaged. If so, please replace the same type and the same electrical
specifications.
•Please comply with local and national safety code. Wear personal protection
equipment (such as approved rubber gloves, masks and flame retardant clothes,
etc.) to prevent being damaged by electric shock and electric arc due to exposed
hazardous live conductor
Safety Operating Procedures
•Before opening the outer cabinet or battery cover, please remove the probe on
the instrument. Do not use the instrument in the circumstances that the
instrument is taken apart or battery cover is opened.
•When using the probe, please put your fingers behind the finger protector of the
probe.
s

6
•When measuring, please connect the zero line or the ground line firstly, then
connect the live wire; but when disconnecting, please disconnect the live wire
firstly, then disconnect the zero line and ground line.
•When it shows low battery indicator, please replace the battery in time in case of
any measurement error.
•It only meets the safety standards when the instrument is used together with the
supplied probe. If the probe is damaged and needs to replace, the probe with
same model number and same electrical specifications must be used for
replacement.

7
Cautions
•Do not usethe instrument around explosive gas, steam or inwet environment.
•The instrument shall be used in accordance with the specified measurement
category, voltage or current rating.
•Please be careful if the measurement exceeds 30V AC true RMS, 42V AC peak
or 60V DC. There may be danger of electric shock at this kind of voltage
•By measuring the known voltage to check whether the meter work is normal, if it
is not normal or damaged, do not use it again.

8
Product Description
Symbol Meaning
DangerousVoltage
may be present
6
Warning; Important
information
......
AC (Alternating
Current)
AC and DC
- - -
DC (Direct current)
*
Earth ground
□
Fuse
□
Low Battery
Double insulated
CE
Complies with EU directives
1
-
1'.
Do not dispose of this product asunsorted municipal waste.

9
CATII
Suitable for testing and measuring circuits directly connected to
power points (sockets and similarities) of low voltage power
installations.
CATIII
Suitable for testing and measuring circuits connected to the
distribution part of low voltage power supply devices in
buildings.
CATIV
Suitable for testing and measuring circuits connected to the
power supply of low voltage power installations in buildings.

10
Multimeter Features
0 NCV probe
f) Flashlight
8 Red / Green Light
9 LCD display (bicolored)
0 Function Key
0 Rotary Switch
8 V-Terminal
0 COM Terminal
f) mA, uA Terminal
41!> 10A Terminal
VQHz%Live

11
FUNC. Key
Press theFUNG button toselect the appropriate measurement function.
Press the " HOLD" key, hold the data for easier recording. Press the
button again toremove thehold function.
[- 1N]
Press the MAX/MIN key to enter the MAX/MIN mode. In this mode, the
multimeter will capture the highest/lowest reading it records.
Press and hold this button again to exit the Max/Min Modes.
Backlight:Press once to turn on the display backlight. Press oncemore to
turn off backlight
Flashlight:Long-press more than 2 seconds, to turn on/off the flashlight.

12
Install or replace the battery
If the " Ol " symbol appears on the display, the battery should be replaced
immediately. Disconnect the test leads from the input terminals of the meter and turn
off the meter. Remove the rubber sleeve and the screws on the back of the
multimeter to replace the battery.
After that,re-apply the compartment cover and reinstall the screw firmly.
r,

13
Sleep Mode
•The Meter automatically enters sleep mode if there is no operation for 15
minutes to save battery energy. Pressing any button or turning the rotary switch
awakes the Meter.
•If you press the "FUNG." button and turn on the meter, the sleep mode will be
deactivated. After turning off the meter, The Meter will restore Sleep Mode after
power off.
15min--- !>C>C>

14
Measurement Operation
DC/AC voltage measurement
ill Don't useit totest DC1000V or AC750V,theinstrument may be damaged.
Always test known voltage with the meter before use to confirm the instrument
function is intact.
1) Turn the rotary switch to" Hzy "andselect DC/AC voltage function by "FUNG."
key
iHf•o•Jl
2) Insert the red lead in" VQHz¾Live "terminal,insert the black lead in "COM"
terminal.
3) Connect the test leads to the source or load to bemeasured.
4) Read LCD display, when measuring AC voltage the frequency is displayed
simultaneously.

15
DC
!· r>AC
+ -

16
DC/AC voltage mV measurement
ill Don't use it to test DC 250V, the instrument may be damaged. Always test
known voltage with the meter before use to confirm the instrument function is intact.
Always test known voltage with the meter before use to confirm the instrument
function is intact.
1) Turn the rotary switch to " % " and select DC/ AC voltage function by
"FUNG." key
iHf•o•Jl
2) Insert the red lead in " VQHz¾Live " terminal, insert the black lead in "COM"
terminal.
3) Connect the test leads to the source or load to be measured.
4) Read LCD display, when measuring AC voltage the frequency is displayed
simultaneously.

17
DC
mV

18
Frequency/Duty measurement (Hz%)
ill The voltage above 10V can't be measured, otherwise, the instrument may be damaged.
1) Turn the rotary switch to "Hz%"
·U·*••I)
2) Insert the red lead in " VQHz¾Live " terminal, insert the black lead in "COM"
terminal.
3) Connect the test leads to the source or circuit in
parallel to be measured, measure the frequency
and duty.
4) Read the measurement result on the screen.

19
Resistance /Continuity /Diode measurement
& When measuring diode on the line,disconnect the power supply and discharge all the
high-voltage capacitors. Otherwise, the instrument may be damaged
1) Turn the rotary switch to " Q_;;! " and select Resistance / Continuity / Diode
measurement function by "FUNC."
◄ f-*01))
2) Insert the red lead in " voHz¾uve "terminal,insert the black probe in "COM".
3) Connect the test leads to the source or circuit in parallel or diode to bemeasured.
Touch the diode anode with the red lead, the black lead contacts the diode
cathode.
4) Read themeasurement result on the screen.