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TEMP

CIRCUIT-TEST

DCL-420

AUTO

POWER OFF

ZERO

ADJUST

POWER

AC/DC

Hz

°F

V

A

MIN/MAX

HOLD

TRUE RMS CLAMP METER

!

!

500V

MAX

COM

V/F

AC600V

DC600V

CAT II

FRONT PANEL DESCRIPTION

NO. ITEM

DESCRIPTION

1

Clamp Jaws

Measure AC and DC current by clamping it around a single current 

carrying wire.

2

Centering Marks

Position the conductor within the clamp jaws at the intersection of 

these marks in order to meet the specified accuracy.

3

Hand Guard

Provides a protective distance from the jaw

4

DC Amps Zero Adjust Use to adjust the displayed reading to 0000 in DC Amps mode, 

prior to making the measurements

5

Jaw Trigger

Press to open the clamp jaw

6

LCD Display

3-3/4 digit 4000 count LCD Display

7

AC/DC Button

Select AC or DC mode for current and voltage measurements

8

Temperature Jack

Plug in 'K' type thermocouple

9

Voltage Button

Press to select voltage measurement

10

/  Jack

Positive input jack to plug in red test lead to measure resistance or 

to check continuity

11

Power Button

Power ON/OFF pushbutton switch

12

Frequency Button

Press to select frequency measurement

13

Temperature °F Button Select temperature measurement function in degrees Fahrenheit

14

MIN/MAX Button

Select MIN or MAX measurement function. This feature will not 

work for (°F) temperature function

15

Current Button

Press to select current measurement

16

/  Button

Press to select between resistance measurement or continuity test

17

Data Hold Button

Displayed data will freeze and 'D-H' will appear on the LCD. 

Changes in the input signal will not change the display

18

COM Jack

Plug in black test lead in all measurement modes, common ground

19

V/F Jack

Positive input jack to plug in red test lead to measure voltage or 

frequency

19

17

15

13

12

6

5

4

3

2

1

7
8
9

10

18

16

14

11

Summary of Contents for DCL-420

Page 1: ...USER S MANUAL CLAMP ON MULTIMETER DCL 420 CIRCUIT TEST ELECTRONICS www circuittest com...

Page 2: ......

Page 3: ...acy 7 OPERATING INSTRUCTIONS 1 DC Voltage Measurement 8 2 AC Voltage Measurement 8 3 DC Current Measurement 9 4 AC Current Measurement 9 10 5 Resistance Measurement 10 6 Continuity Test 10 7 Frequency...

Page 4: ...0VAC RMS as these voltages pose a shock hazard Always consider circuits to be energized Never assume any equipment to be de energized Always start with power off Set the function switch to the correct...

Page 5: ...in the Operating Instructions 500V MAX This symbol indicates that the terminal s so marked must not be con nected to a circuit point at which the voltage with respect to ground exceeds 500V AC DC Thi...

Page 6: ...Voltage Current Resistance Continuity Temperature Frequency LCD DISPLAY SYMBOL DEFINITIONS DISPLAY SYMBOL DEFINITION DISPLAY SYMBOL DEFINITION AC Alternating Current A Amperage DC Direct Current V Vo...

Page 7: ...ture Jack Plug in K type thermocouple 9 Voltage Button Press to select voltage measurement 10 Jack Positive input jack to plug in red test lead to measure resistance or to check continuity 11 Power Bu...

Page 8: ...Continuity Check 400 0 appears on the display with 4 ashing b In Resistance Mode 40 00M appears on the display with 4 ashing Operating Temp 0 to 50 C 32 to 122 F Relative Humidity 80 Operating Storage...

Page 9: ...RRENT DC A 400A 600A 0 1A 1A 1 5 reading 4 digits AC CURRENT AC A 40 400HZ 300A 600A 0 1A 1A 1 5 reading 4 digits 50Hz 60Hz and 400Hz 3 5 reading 4 digits 40Hz to 1KHz RESISTANCE 400 4k 40k 400k 0 1 1...

Page 10: ...the circuit to be measured Ensure that the black lead is connected to the negative side of the circuit and the red lead to the positive Read the displayed voltage If minus sign appears the voltage is...

Page 11: ...closed and do not make any contact with the DC line For maximum accuracy it is recommended that the conductor passes through the centre of the clamp head opening use the centering marks on the jaws as...

Page 12: ...the digit 4 flashing Press pushbutton once M will now appear on the display Apply the test leads to the circuit to be measured Read the displayed resistance with proper decimal point and symbols or K...

Page 13: ...be into TEMP socket making sure to observe the correct polarity Press the Power button 400 0 and and will appear on the display with the digit 4 flashing Press F pushbutton once and F will appear on t...

Page 14: ...hevaluemayormaynotchangedependingupontherangethemeterwaslastin The meter must be turned OFF and the entire procedure must be re applied CAUTION To cancel MIN MAX measurement the meter must be turned O...

Page 15: ...e single screw securing the battery cover and lift to open Replace the 9V battery observing the correct polarity Replace the cover and tighten the screw MAINTENANCE a Always keep the meter dry b Keep...

Page 16: ...website www circuittest com for information on warranty service Any product which has been subjected to misuse or accidental damage is excluded from the warranty Except as stated above Circuit Test E...

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