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11

MEASURING AC CURRENT

WARNING

• 

Beware of electrocution.

• 

Ensure that the test leads are disconnected from the meter before making 

current clamp measurements.

• 

Set the rotary selector to the 40A or 400A range position.

• 

Push the “

REL

” key to make sure that the LCD displays zero.

• 

Press the trigger to open the jaw and fully enclose only one conductor.

• 

Take the reading on the LCD.

Note: Do not put more than one cable into the jaw during the test, otherwise the test 

value obtained may be incorrect.

• 

For optimum results, centre the conductor in the jaw.

• 

At the manual range mode, when only “OL” is shown on the LCD it means that the 

measurement has exceeded the range and a higher range should be selected.

• 

If the scale of the value to be measured is unknown beforehand, set the range to 

the highest.

• 

“    ” means the maximum input current is 400A rms AC.

MEASURING DC CURRENT

WARNING

• 

Beware of electrocution.

• 

Ensure that the test leads are disconnected from the meter before making 

current clamp measurements.

• 

Set the rotary selector to the 40A or 400A range position.

• 

Press the “

SEL

” key and turn to DC current measurement mode.

• 

Press the “

REL

” button and the meter will be set to zero.

• 

Press the trigger to open the jaw and fully 

enclose only one conductor.

• 

Take the reading on the LCD.

• 

“-” will be displayed on the LCD if the 

direction of the current is negative.

Note: Do not put more than one cable into the 

jaw during the test, otherwise the test value 

obtained may be incorrect.

• 

For optimum results, centre the conductor 

in the jaw.

• 

At the manual range mode, when only 

“OL” or “-OL” is shown on the LCD, 

it means that the measurement has 

exceeded the range and a higher range 

should be selected.

• 

Under the manual range mode, when 

the scale of the value to be measured is 

unknown beforehand, set the range to the 

highest.

• 

“    ” means the maximum input current is 

400A DC.

Correct

Incorrect

Содержание D03128

Страница 1: ...1 CLAMP METER MODEL D03128...

Страница 2: ...Frequency or Duty Cycle 9 Switching Maximum or Minimum Value 10 Switching Functions 10 Backlight and Clamp Lighting Bulb 10 Auto Power Off 10 Preparing for Measurement 11 Measuring AC Current 11 Measu...

Страница 3: ...Do not use the meter around explosive gas or vapour When using the test leads keep your fingers behind the finger guards Remove test leads from the meter before opening the meter case or battery door...

Страница 4: ...12 Reading Hold Backlight Button HOLD B L 3 Panel 13 Rotary Selector 4 Trigger 14 OFF Power Switch 5 Function Switch Button SEL 15 Symbol 6 MAX MIN Switch Button MAX MIN 16 Symbol 7 Relative Switch Bu...

Страница 5: ...INPUT JACKS Button Switch Jack Function HOLD B L button Hold the reading or control the backlight SEL button For switching among measuring functions REL button Relative value measurement Hz button Sw...

Страница 6: ...rate 3 times sec Bar graph 30 times sec Unit indication Function and unit Auto power off time 15 minutes Operating power 1 5V x 3 AAA batteries Battery low indication on LCD Temperature factor 0 1 x...

Страница 7: ...ue Frequency by a range from current clamp Range Resolution Accuracy 10Hz 0 01Hz 1 5 of rdg 5 digits 1kHz 0 001kHz 1kHz 0 001kHz Measurement range 10 1kHz Input current range 4A rms AC higher input cu...

Страница 8: ...of rdg 3 digits 4k 0 001k 40k 0 01k 400k 0 1k 4M 0 001Mk 40M 0 1M 1 2 of rdg 3 digits Open circuit voltage 0 4V Overload protection 250V DC or rms AC Diode Range Resolution Function 0 001V Displaying...

Страница 9: ...mode OL shows when the input value is larger than the allowed value of the measurement mode Press the key again and the relative measurement function will be cancelled Disable to enter REL mode when...

Страница 10: ...set at about 15 seconds meaning the light will turn off automatically after about 15 seconds frequent use of the backlight will shorten the life of the batteries When the battery voltage is 3 7V the...

Страница 11: ...400A rms AC MEASURING DC CURRENT WARNING Beware of electrocution Ensure that the test leads are disconnected from the meter before making current clamp measurements Set the rotary selector to the 40A...

Страница 12: ...e that the test leads are disconnected from the meter before making current clamp measurements Set the rotary selector to the A range A or A position Press the trigger to open the jaw and fully enclos...

Страница 13: ...uency test range is 10Hz 10kHz It is possible to test the frequency which is higher than 10kHz but the tolerance of the test result can t be ensured means the maximum input voltage is 750V rms AC WARN...

Страница 14: ...V range position Press the Hz button to switch to DUTY measurement Connect the test leads to the two ends of the source or load for measurement Take the reading on the LCD Note If the duty cyle is les...

Страница 15: ...ed test lead to the anode and the black test lead to the cathode of the diode for testing Take the reading on the LCD Note The meter will show the approximate forward voltage drop of the diode When th...

Страница 16: ...es If the low battery symbol appears it means that the batteries should be replaced Loosen the fixing screw of the battery cover and remove it Replace the exhausted batteries with new ones Put the bat...

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