Uniks C6 User manual

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C6
TRMS Digital
Clamp Meter 600A AC
V1.0 29.11.2022

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1. Summary.........................................................5
1.1. Safety Standards................................................................. 5
1.2 Safety Signs........................................................................... 5
2. Instrument Schematic .....................................7
3. Instructions...................................................... 10
3.1 AC and DC voltage measurement....................................... 10
3.2 AC voltage and frequency measurement......................... 10
3.3 DC voltage measurement..................................................... 11
3.4 AC current measurement .................................................... 11
3.5 Resistance measurement .................................................... 12
3.6 Diode measurement.............................................................. 13
3.7 Circuit continuity measurement ....................................... 13
3.8 Capacitance measurement.................................................. 13
3.9 Frequency and duty ratio measurement......................... 14
3.10 Temp measurement............................................................. 14
3.11 Low impedance AC/DC voltage measurement ............. 15
3.12 Automatic Shutdown........................................................... 15
3.13 Precision Indicators ............................................................ 15
4. Electrical Specification................................. 17
5. General Specification.................................... 21
6. Maintenance..................................................... 22
7. Battery Replacement .................................... 23
8. WARRANTY CONDITIONS............................ 24
ASSISTANCE............................................................. 25

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1. Summary
Uniks C6 digital AC clamp meter is a stable, safe and reliable
instrument. The circuit of the instrument takes integrated circuit as the core
and is equipped with a full range overload protection circuit. It has a novel
appearance and can be used to measure AC current, AC/DC voltage,
temperature, frequency, resistance, capacitance, diode and open-closed
circuit measurement. It is a superior instrument special for electricians.
1.1. Safety Standards
This instrument is designed and manufactured according to the safety
standards IEC61010-1 and IEC61010-2-032 for electronic measuring
instruments and hand-held current clamp meters, and meets the safety
standards of double insulation CAT Ⅲ 600V and pollution position 2.
1.2 Safety Signs
Warning sign, requiring operation with caution.
Can be used on dangerous live conductors.
Double insulation protection (Class II).
Conform to European Union (EU) standards.
Grounding.

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Cautions
•Please read the instructions carefully before using the instrument,
and pay special attention to the contents of " ". Please follow the
operating instructions of "".
•Ensure that the instruments and probes coming with the package
meet the requirements of safety standards. If the probe is damaged,
replace it with a probe of the same model or electrical specification.
•Before use, check the instrument and probes. If the probe is exposed,
the housing is damaged, and the display is abnormal, do not measure.
•When measuring, do not tap the unused input terminal.
•When the measuring voltage is higher than 60V DC or 30V AC, be
careful and remember to keep your fingers behind the hand shelter
of the probe.
•When the range of to-be-measured value is uncertain, set the
function range to the maximum range position. Do not exceed the
input limits specified for each range.
•Do not measure a voltage higher than the allowable input value.
•Before switching the function range switch, the probe shall leave the
circuit under test.
•Before conducting in-circuit resistance measurement, cut off the
power supply and release all charges at both ends of all capacitors.
•Do not expose the instrument to strong light, high temperature or
humidity.
•Do not tap bare wires, connectors or circuits being measured with
bare hands.
Packing List
•Operation manual x 1
•Probes x 2
•Temperature probe x 1
•Packing box x 1
•1.5V SIZE AAA batteries x 3

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2. Instrument Schematic
1. AC current clamp
Used for sampling AC current.
2. Safety barrier
Effectively keep the operator from accidentally taping the live
conductor during the current measurement
3. Function range switch

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Used for selecting various functions and range positions.
4. Data-hold key/Backlight-display button
•Tap the "BL/HOLD" button, the final reading will be maintained on the
display and " " is displayed. Tap the "BL/HOLD" button again, and
the instrument will return to the normal measurement state.
•Press and hold the "BL/HOLD" button for about 2 seconds to turn on
or off the LCD backlight, and it will turn off automatically after about
30 seconds.
5. Inrush current test button
•Tap the "INRUSH" button to turn on or off the inrush current
measurement function
•Press and hold the "INRUSH" button for more than 2 seconds to turn
on or off the lights.
6. LCD display
Maximum display value: 5999.
7. INPUT terminal
In addition to the AC current, the red probe contacts positive input
terminals.
8. COM terminal
In addition to the AC current, the black probe contacts negative input
terminals.
9. Manual range key/Low-pass filter button
•Tap the "LPF/RAN" button during the automatic range to switch to the
manual range.

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•Press and hold this key for more than 2 seconds during the manual
range to switch back to the automatic range.
•During the AC current and AC voltage automatic measuring, press and
hold the "LPF/RAN" button for about 2 seconds to turn on or off the
LPF mode.
10. Maximum/Minimum value button
•When at the voltage, current, resistance and temperature positions,
tap the "MIN/MAX" button to switch between displaying the
maximum and minimum values.
•Press and hold the "MIN/MAX" button for more than 2 seconds to
exit the maximum and minimum value measurement.
11. Function selection button
•In " " position, it is used to switch between current value and
current frequency.
•In " " position, it is used to switch between the frequency of AC
voltage, DC voltage and AC voltage.
•In " " position, it is used for switching between resistance,
capacitance, diode measurement and open-closed measurement.
•In "Hz%" position, it is used to switch between frequency and duty
ratio.
•In"℃℉"position, It is used to switch between the temperature units
of ℃ and ℉.
•In " " position, it is used to switch between DC voltage and AC
voltage.

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12. Trigger
Press the trigger and the clamp opens: release the trigger and the
clamp automatically closes.
13. Clamp meter light
•Press and hold the "INRUSH" button for more than 2 seconds to turn
the light on or off.
•The light turns off automatically about 1 minute after it is turned on.
3. Instructions
WARNING
Do not measure any voltage higher than 600V DC or 600V
AC RMS to avoid electric shock and/or damage to the
instrument. Do not apply voltage exceeding 600V DC or 600V
AC RMS between the common terminal and the ground to
prevent electric shock and/or damage to the instrument.
3.1 AC and DC voltage measurement
Insert the red probe into the "INPUT" jack, and the black probe into
the "COM" jack. Switch the function range switch to " " position, tap
the "SEL" button to switch between AC voltage, DC voltage and frequency
measurement modes, and connect the probes to the measured signal.
3.2 AC voltage and frequency measurement
•When measuring AC voltage, tap the "SEL" button to switch the
display of the voltage value and frequency of the measured voltage;

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•Tap the "LPF/RAN" button to switch the range of AC voltage.
•When in the AC voltage automatic measurement, press and hold the
"LPF/RAN" button for about 2 seconds to turn on or off the LPF filter
function. The filter attenuation frequency point is about -0.94dB at
1kHz.
3.3 DC voltage measurement
Connect the probes to the measured signal, the polarity of the
terminal connected to the red probe is displayed on the display. Read the
measurement results.
Caution:
△ If the measured voltage range is unknown in advance, please
set the function range switch to the maximum range, and then
gradually reduce the range until a satisfactory resolution is
achieved.
△ When measuring high voltage, pay special attention to avoid
electric shock.
3.4 AC current measurement
Switch the function range switch to the current position, hold the
trigger, open the clamp, and clamp a wire of the circuit to be tested. The
instrument will display the measured current value.
1. Tap the "SEL" button to switch to display the frequency of current
measurement.
2. Tap the "LPF/RAN" button to switch the AC current range
3. During AC voltage and current automatic measurement, press and hold
the "LPF/RAN" button for more than 2 seconds to turn on or off the
LPF measurement function.

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4. Tap "INRUSH" button to start the inrush current measurement function.
Caution:
△ It is impossible to measure if clamping multiple wires at the
same time.
△ If the measured current range is unknown in advance, please
set the function range switch to the maximum range, and then
gradually reduce the range until a satisfactory resolution is
achieved.
3.5 Resistance measurement
1. Insert the red probe into the "INPUT" terminal and the black probe into
the "COM" terminal.
2. Set the function range switch to " " position, tap the "SEL" key to
switch to "Ω" function, and connect the probe to the measured
resistance.
3. Read the measurement result after the reading is stable.
Caution:
When the measured resistance value exceeds the
maximum range, the instrument with higher range
shall be selected.
When checking the in-circuit resistance, the power
supply of the circuit to be tested must be cut off and all
capacitors must be fully discharged.
When measuring the resistance above 1M, it may
take several seconds for the reading to become stable,
which is normal for high resistance measurement.

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3.6 Diode measurement
1. Insert the red probe into the "INPUT" terminal and the black probe into
the "COM" terminal. At this time, the polarity of the red probe is "+"
and the polarity of the black probe is "-".
2. Set the function range switch to the " " position.
3. Tap the "SEL" button to switch to the " " position, and the red probe
is connected to the anode of the tested diode, and the black probe is
connected to the cathode of the tested diode.
4. Read the approximate value of forward voltage drop of the tested diode.
3.7 Circuit continuity measurement
1. Insert the red probe into the "INPUT" terminal and the black probe into
the "COM" terminal;
2. Set the function range switch to the " " position.
3. Tap the "SEL" button to switch to " " position, and the probe is
connected to two points of the circuit to be tested. If the built-in
buzzer makes a noise, it means that the conduction resistance
between the two points is not greater than 30 Ω.
3.8 Capacitance measurement
1. Insert the red probe into the "INPUT" terminal and the black probe into
the "COM" terminal.
2. Set the function range switch to the " " position, press the "SEL"
button to switch to the " " position, and connect the probes to
both terminals of the measured capacitance.
3. Read the measurement result after the reading is stable.
Caution:
When the measured capacitance value exceeds the

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maximum range, the instrument with higher range
shall be selected.
Before measuring the in-circuit capacitance, the power
supply of the tested circuit must be cut off and all
capacitors must be fully discharged.
When measuring the polar capacitance, the red probe
is connected to the positive terminal of the capacitance.
When measuring capacitance above 100µF, it may take
several seconds for the reading to become stable,
which is normal for large capacitance measurement.
3.9 Frequency and duty ratio measurement
1. Insert the red probe into the "INPUT" terminal and the black probe into
the "COM" terminal;
2. Set the function range switch to the position, and tap the "SEL"
button to switch to display the frequency or duty ratio of the
measured signal.
3. Connect the probes to both ends of the power supply or load for
measurement.
4. Read the frequency or duty ratio of the measured signal.
3.10 Temperature measurement
1. Set the function range switch to the "℃℉" position. At this time, the
LCD displays the current ambient temperature. Tap the "SEL" button
to switch the temperature unit between ℃ or ℉.
2. When thermocouple is required to measure temperature, insert the
red probe of K-type thermocouple into the "INPUT" terminal and the
black probe into the "COM" terminal, and use the thermocouple
probes to contact the measured object or area for measurement.

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3. Read the measured temperature value.
3.11 Low impedance AC/DC voltage measurement
1. Set the function range switch to " " position.
2. Tap the "SEL" button to switch between AC and DC voltage
measurement modes and connect the probes to the measured signal.
Caution:
When measuring low impedance voltage, the
maximum measurement time shall not exceed 1
minute, and intervals between measurements shall be
more than 20 seconds to avoid burning-out caused by
excessive heating of load resistance.
3.12 Automatic Shutdown
When there is no operation within 10 minutes after startup, the
instrument will enter the sleep state and automatically shut down to save
power. After the automatic shutdown, tap the "SEL" button, and the
instrument will start up and enter the working state again.
3.13 Precision Indicators
•Accuracy: ± (% reading + digits).
•Warranty period: 1 year from the date of delivery.
•Working environment temperature: 18 ℃~28 ℃.
•Working environment humidity: no greater than 75%.
•Temperature coefficient: 0.1 × accuracy/1 ℃.

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Caution:
When measuring AC
current, please place the
conductor to be measured
in the center of the clamp.
If not, the position error of
1.5% to the maximum can
be increased.

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4. Electrical Specification
DC voltage
Range
Resolution
Accuracy
6V
0.001V
± (0.5% reading+3 digits)
60V
0.01V
600V
0.1V
Input impedance: 10MΩ.
Maximum allowable input voltage: 600V DC or 600V AC RMS.
AC voltage
Range
Resolution
Accuracy
6V
0.001V
± (0.8% reading+5 digits)
60V
0.01V
600V
0.1V
Input impedance: 10MΩ.
Measuring frequency range: 40Hz~1000Hz.
Maximum allowable input voltage: 600V DC or 600V AC RMS.
AC current
Range
Resolution
Accuracy
6A
0.001A
± (2.5% reading+5 digits)
60A
0.01A
600A
0.1A
Minimum input value of AC current: 0.01A (RMS)
Maximum input value of AC current: 600A (RMS)
Frequency range: 40Hz~1000Hz

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Resistance
Range
Resolution
Accuracy
600
0.1
± (1.0% reading+3 digits)
6k
0.001k
60k
0.01k
600k
0.1k
6M
0.001M
60M
0.01M
± (2.0% reading+3 digits)
Overload protection: 600V DC or 600V AC RMS.
Diode test
Range
Resolution
Accuracy
0.001V
Displays the approximate value of the
forward voltage drop
(The open circuit voltage is about 3.0V)
Overload protection: 600V DC or 600V AC RMS.
Continuity test
Range
Resolution
Accuracy
0.1 Ω
The buzzer will make a noise when it is ≤ 30
Ω
(Open circuit voltage is about 1V)
Overload protection: 600V DC or 600V AC RMS.

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Capacitance
Range
Resolution
Accuracy
10nF
0.001nF
± (3.0% reading+5 digits)
100nF
0.01nF
1µF
0.1nF
10µF
1nF
100µF
0.01µF
1mF
0.1µF
± (4.0% reading+5 digits)
10mF
0.001mF
100mF
0.01 mF
± (5.0% reading+5 digits)
Overload protection: 600V DC or 600V AC RMS.
Frequency
Range
Resolution
Accuracy
10Hz
0.001Hz
± (0.5% reading+5 digits)
100Hz
0.01Hz
1kHz
1Hz
10kHz
0.01kHz
100kHz
0.1kHz
1MHz
0.001MHz
10MHz
0.01MHz
Frequency measurement range: 10Hz ～ 10MHz
Signal input: >200mVAC (RMS)
Overload protection: 600V DC or 600V AC RMS.

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Duty ratio
Range
Resolution
Accuracy
1~99 %
0.1%
± (3.0% reading+2 digits)
Overload protection: 600V DC or 600V AC RMS.
Temperature
Range
Resolution
Accuracy
-20℃~1000℃
(-4℉~1832℉)
1℃/1℉
± (1.0% reading+2 digits)
Overload protection: 600V DC or 600V AC RMS.