Kaiweets HT208D User manual

True-rms Digital
Clamp Meter
User ManualHT208D
Contact us: support@Kai weets.com

Introduction��������������������������������������������������������������������������������������������������������������������� 1
Safety information��������������������������������������������������������������������������������������������������������� 1
Product Overview����������������������������������������������������������������������������������������������������������� 3
Symbol-Explanation������������������������������������������������������������������������������������������������������� 4
Function Buttons������������������������������������������������������������������������������������������������������������ 5
Advanced Functions ������������������������������������������������������������������������������������������������������ 7
AC current measurement with “Inrush” function ����������������������������������������������������������� 7
AC current measurement with “VFD” function�������������������������������������������������������������� 8
AC voltage measurement with “VFD” function�������������������������������������������������������������� 8
High-Impedance voltage measurement������������������������������������������������������������������������ 9
Low-Impedance voltage measurement ( )���������������������������������������������������������� ��9
Operating Instructions������������������������������������������������������������������������������������������������� 10
Contents

Insert and replace the batteries���������������������������������������������������������������������������������� 10
Turn on/o the meter �������������������������������������������������������������������������������������������������� 10
Automatic shutdown ��������������������������������������������������������������������������������������������������� 10
Auto-ranging ��������������������������������������������������������������������������������������������������������������� 11
AC zero input behavior of True-rms meters���������������������������������������������������������������� 11
Connecting test leads������������������������������������������������������������������������������������������������� 12
Making Measurements������������������������������������������������������������������������������������������������� 12
AC/DC current measurement ������������������������������������������������������������������������������������� 12
AC/DC voltage measurement������������������������������������������������������������������������������������� 14
Frequency or duty cycle measurements (Hz%)���������������������������������������������������������� 16
Resistance measurement ٠��������������������������������������������������������������������������������������� 17
Continuity test������������������������������������������������������������������������������������������������������������� 18
Diode test ������������������������������������������������������������������������������������������������������������������� 19

Capacitance measurement����������������������������������������������������������������������������������������� 20
Temperature measurement ���������������������������������������������������������������������������������������� 21
Non-contact AC voltage detection (NCV) ������������������������������������������������������������������� 22
Live detection ������������������������������������������������������������������������������������������������������������� 22
Specication ����������������������������������������������������������������������������������������������������������������� 24
Accuracy��������������������������������������������������������������������������������������������������������������������� 25
Maintenance������������������������������������������������������������������������������������������������������������������ 27
Cleaning the meter ����������������������������������������������������������������������������������������������������� 27
Three Year Warranty����������������������������������������������������������������������������������������������������� 28


2
terminals or between any terminal and earth ground�
• Remove test leads from the Meter before opening the Meter case�
• Never operate the Meter with the back cover removed or the case open�
• Never remove the back cover or open the case of an instrument without rst removing
the test leads or the jaws from a live conductor�
• Use caution when working with voltages above 30 V ac RMS, 42 V ac peak, or 60 V
dc� These voltages pose a shock hazard�
• Do not attempt to measure any voltage that might exceed the maximum range of the
Meter- 1000 V RMS�
• Do not operate the Meter around explosive gas, vapor, or dust�
• When using probes, keep ngers behind the nger guards.
• When making electrical connections, connect the common test lead before
connecting the live test lead; when disconnecting, disconnect the live test lead before
disconnecting the common test lead�
• Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance,continuity, or diodes�
• Check the operation of the meter at a known source before and after use�

3
Product Overview
① NCV Probe
② Current Sensing Jaw
③ Flashlight
④ Tactile Barrier
⑤ Rotary Function Switch
⑥ Function Buttons
⑦ Display
⑧ Alignment Marks
⑨ Jaw Release
⑩ INPUT Terminal
(red test lead)
⑪ COM Terminal
(black test lead)
⑫ Data Hold / Flashlight Switch

4
Symbol-Explanation
CAT. III
Hazardous Voltage� Danger! Alternating Current (AC)
AC and DC Direct current (DC)
Important Information Earth
Fuse Low Battery Indication
Double Insulated
Conforms to European Union directives�
Do not dispose of this product as unsorted municipal waste�
IEC Measurement Category III: CAT�III equipment has protection against
transients in equipment in xed-equipment installations, such as distribution
panels, feeders and short branch circuits, and lighting systems in large buildings�
IEC Measurement Category IV: CAT�IV equipment has protection against
transients from the primary supply level, such as an electricity Meter or an
overhead or underground utility service�
CAT. IV

5
Function Buttons
Press the “FUNC�” key to switch the respective secondary function
between the dierent measurements for the applications accessible
via the function switch such as between AC and DC�
Auto-Ranging by default� Switches to manual mode and cycles
through all ranges� Auto-Ranging restored when pressed for two
seconds�
Press this key to switch between the maximum and minimum
values; Press this key for more than 2 seconds to exit this mode�
Before entering the “MAX/MIN” mode, press the range key to switch
to the most suitable range� After entering this mode, the meter will
automatically enter to manual range mode�

6
NOTE: In DC current measurement mode, this key is the “ZERO”key�
However, in other functions, this key is the “REL” key�
“REL” Function: Relative (REL) mode: Stores existing reading (a
delta) and resets display to zero� Sets a relative reference point
tomeasure against the next reading�
“ZERO” Function: This function allows the user to set the
magnetization effects to zero when measuring DC� It must be
performed after each high amplitude current measurement� With no
conductor inserted into the clamp, press and hold this key (approx�
3 seconds) until a beep sounds and the “ZERO” symbol appears on
the display�
HOLD: Captures and holds a stable measurement�
Make sure that the function is deactivated at the start of the test�
Otherwise an incorrect measurement result will be simulated!
Work Light: Press and hold this button for more than 2 seconds to
switch the work light on or o.

7
Advanced Functions
AC current measurement with “Inrush” function
Inrush current is the instantaneous high input
current drawn by a power supply or electrical
equipment at turn-on� This arises due to the
high initial currents required to charge the
capacitors and inductors or transformers�
1 . W i t h t h e d e v i c e t o b e t e s t e d t u r n e d o , t u r n t h e m e t e r ’ s d i a l t o p r o p e r r a n g e ( 6 0 / 6 0 0
or 1000 )�
2. Center the jaw around the device’s live wire.
3� Push the button 3 times until the “INRUSH” symbol is displayed�
4. Switch on the device. The inrush current (spike) is displayed in the meter’s display.
Note: The measuring time of inrush current is about 100ms�
Steady-state current value
Puls e widt h Time
Current
Inrush current magnitude
Peak current

8
When an electrical device is rst powered on, inrush current is the surge or momentary
burst of current that ows into it.
AC current measurement with “VFD” function (Variable
Frequency Drive Filtering)
The VFD mode eliminates high frequency noise in voltage measurements by means
of a low-pass filter� The VFD mode is designed for variable frequency drive (VFD)
measurements� This mode is always active for AC measurements�
Turn the knob and select proper range(60/600 or 1000 ), press the key until
the “VFD” symbol is displayed�
Note: Please do not use VFD function to verify the presence of dangerous voltage or
current, which may exceed the indicated value�
AC voltage measurement with “VFD” function
Turn the knob to or , press key until the “VFD” symbol is displayed�
Note: Please do not use VFD function to verify the presence of dangerous voltage or

9
current, which may exceed the indicated value�
High-Impedance voltage measurement
High Impedance means high electrical Impedance� This is used to denote the input
Impedance or output Impedance of electrical circuits and devices in particular� When
measuring in the circuit, this has only a minor impact on the performance of the circuit,
particularly in the case of sensitive electronic circuits or control circuits�
Low-Impedance voltage measurement ( )
mode allows you to measure AC/DC voltages with a low impedance in this mode,
the Meter lowers the internal resistance to prevent ‘phantom’ voltage readings. As a
result, the circuit is more heavily loaded than in the standard measuring mode�
Attention
▶When using (low input impedance) measurement, the continuous measurement
time cannot exceed 1 minute�
▶Do not use LoZ mode to measure the voltage in the circuit that may be damaged
due to the low impedance of this mode�

10
Insert and replace the batteries
Replace the batteries immediately when the symbol
appears in the display� Disconnect the meter from
the power source� Remove the test leads from the
measuring device, loosen the screws on the back
and remove the lower half of the housing, replace
the old batteries and screw the cover back on�
Turn on/o the meter
The device is switched on when the rotary switch (5) is set to a measuring function
When the rotary switch is set to OFF, the measuring device is switched o.
Automatic shutdown
No operation in 15 minutes, the clamp meter beeps 3 times� Without further operation,
Operating Instructions

11
the clamp meter beeps again and switches o automatically. Press any key to restore
the clamp meter to operating status� The symbol appears on the display� To deactivate
the automatic switch-o, hold down the “FUNC.” key for more than 2 seconds and switch
on the clamp meter at the same time� The symbol disappears� Restart after switching
o the meter, the automatic switch-o can be restored.
Auto-ranging
The meter automatically selects the measuring range that is best suited for the mea-
surement performed� The measuring unit and resolution are adjusted at the same time�
AC zero input behavior of True-rms meters
Unlike averaging meters, which can accurately measure only pure sinewaves, True-rms
meters accurately measure distorted waveforms� Calculating True-rms converters
require a certain level of input voltage to make a measurement� This is why ac voltage
and current ranges are specied from 5 % of range to 100 % of range. Non-zero digits
that are displayed on a True-rms meter when the test leads are open or are shorted are
normal. They do not aect the specied ac accuracy above 5 % of range.

12
Connecting test leads
Do not test if leads are improperly seated�
Results could cause intermittent display
readings� To ensure proper connection,
rmly press leads into the jack completely.
AC/ DC current measurement
• When making current measurements, disconnect the test leads from the Meter�
• Keep ngers behind Tactile Barrier(4).
• When measuring current, center the conductor in the Jaw using the alignment marks
on the Jaw�
• Before taking dc measurements, please push key to ensure correct readings�
Zeroing the Meter removes dc oset from the reading. The Zero function works only in
the dc current measurement�
• Before zeroing the Meter, make sure the Jaws are closed and there is no conductor
INCORRECT
CORRECT
Making Measurements

13
inside the Jaw�
1� Turn the rotary switch to the correct current setting (60/600 , 1000 )� “DC” appears
on the display� Press the “FUNC�” button, AC is shown on the display�
2� If measuring DC current, wait for the display to stabilize and then push to zero
the Meter�
3� Open the Jaw by pressing the Jaw Release and insert the conductor into the Jaw�
4� Close the Jaw and center the conductor using the alignment marks�
5� View the reading on the display�
►Do not use the current clamp to surround more than one conductor.
►If the supply and return conductors (e.g. L and N) are measured, the currents will
cancel each other out and no measurement will be displayed� The cables of household
appliances usually contain L and N conductors� A cable separator is required to measure
with the current probe�
►If several supply conductors are measured, the currents add up.

14
AC/DC voltage measurement
Voltage above 750 V(AC)/1000V (DC) cannot be measured! When measuring
high voltage, pay special attention to safety to avoid electric shock or injury�
1� Set the rotary switch to or , press the “FUNC�” key to change the AC or DC

15
voltage measurement�
2� Plug the black test lead into the COM socket and the red test lead into the INPUT
socket�
3� Then bring the test probes into contact with the points to be measured�
4� Read the measurement results on the display�
Attention
▶When using (low input impedance) measurement, the continuous measurement
time cannot exceed 1 minute�
▶Do not use LoZ mode to measure the voltage in the circuit that may be damaged due
to the low impedance of this mode�
High impedance voltage measurement: 10 MΩ
Low impedance voltage measurement: 300 kΩ

16
Frequency or duty cycle measurements (Hz%)
1� Turn the rotary function switch to Hz%�
2� Plug the black test lead into the COM socket
and the red test lead into the INPUT socket�
3� Connect the probes to the measuring points
(connect to the measured power supply or to
the parallel connection)�
4� Read the result on the display�
▶In Hz% mode, Range: 0~10MHz Voltage sensitivity: 0�5~10V AC (as the frequency
increases, the voltage should increase accordingly)�
▶In V mode, Range: 10Hz~10 kHz Voltage sensitivity: > 0�5V AC (as the frequency
increases, the voltage should increase accordingly)�
▶In A mode, Range: 10Hz~1 kHz Current sensitivity:> 20A (as the frequency
increaes, the current should increase accordingly)�
Other manuals for HT208D
1
Table of contents
Other Kaiweets Measuring Instrument manuals

Kaiweets
Kaiweets KC601 User manual

Kaiweets
Kaiweets HT200B User manual

Kaiweets
Kaiweets HT200B User manual

Kaiweets
Kaiweets HT208A User manual

Kaiweets
Kaiweets HT206D User manual

Kaiweets
Kaiweets HT208D User manual

Kaiweets
Kaiweets HT206B User manual

Kaiweets
Kaiweets HT206B User manual

Kaiweets
Kaiweets HT112B User manual
Popular Measuring Instrument manuals by other brands

EGAmaster
EGAmaster EGATRONIK operating instructions

PerkinElmer
PerkinElmer LAMBDA 265 installation instructions

Aqualytic
Aqualytic AL200 instruction manual

Next Century
Next Century RR4-TR Operation and installation guide

Applied Instruments
Applied Instruments DIRECTV SWM SL5s Application note

Digi-Sense
Digi-Sense 20250-11 user manual