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7. FREQUENCY MEASUREMENT

NOTE: The meter will read frequency of voltages from 10V to 600V.

 Plug the red test lead into 

V/F

 jack and the black test lead into 

COM

 

jack.

 Press the Power button. 

 ʻ400.0ʼ,   and   and will appear on the display with the digit ʻ4ʼ flashing.

 Press  Hz  pushbutton once, ʻHzʼ will now appear on the display.

 Apply the test leads to the point of measurement. 

 Read the displayed frequency with proper decimal point and symbols 

(Hz or KHz).

8. TEMPERATURE MEASUREMENT

 

WARNING: 

DO NOT MEASURE TEMPERATURE OF METAL PARTS WITH VOLTAGE 

PRESENT ON THEM. REMOVE ALL VOLTAGE SOURCES FROM THE CIRCUIT TO BE TESTED 

BEFORE TAKING A TEMPERATURE MEASUREMENT. DISCONNECT THE TEST LEADS BEFORE 

TAKING ANY MEASUREMENTS.

 Insert the temperature probe into TEMP socket, making sure to observe 

the correct polarity.

 Press the Power button.

 ʻ400.0ʼ,   and   and will appear on the display with the digit ʻ4ʼ flashing.

 Press  °F  pushbutton once and ʻ°Fʼ will appear on the display. 

 Touch the probe to the component you are testing and keep it there for 

about 30 seconds or until the reading stabilizes.

 The digital reading will indicate the proper value with decimal point.

9. MIN/MAX MEASUREMENT

NOTE: When 

MIN/MAX

 button is pressed to go in to MIN or MAX mode, the autorang-

ing feature is cancelled and the meter will stay in the range it was last in when the 

MIN/MAX

button was pressed. If a measurement being taken exceeds this range, the 

meter will display the maximum range with the far left digit flashing. 

NOTE: The MIN/MAX mode will not work for temperature measurements.

 Depending on the type of measurement required, follow the instructions 

for inserting the test leads and function selection.

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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