Klein Tools CL120 Manual

SYMBOLS ON METER

	AC (Alternating Current)		DC (Direct Current)
	Resistance (in Ohms)		Audible Continuity
	Double Insulated Class II		Ground
	Warning or Caution		Risk of Electrical Shock
V	Voltage (Volts)	A	Amperage (Amps)
COM	Common	NCV	Non-Contact Voltage Tester
	Backlight	SEL	Select
	Positive		Negative

SYMBOLS ON LCD

AC	AC (Alternating Current)	DC	DC (Direct Current)
	Negative Reading	H	Data Hold
	Auto Ranging	MAX	Maximum Value Hold
	Low Battery		Audible Continuity
M	Mega (value x 10 6 )	k	kilo (value x 10 3 )
m	milli (value x 10 -3 )	V	Volts
A	Amps		Ohms
NCV	Non-Contact Voltage Tester		Auto Power-Off
	Hazardous Voltage Indicator

FEATURE DETAILS

NOTE: There are no user-serviceable parts inside meter.

1. 2000 count LCD display
2. Function selector switch
3. Clamp
4. "COM" jack
5. "VΩ" jack
6. Backlight button
7. "RANGE" button

8. "MAX" (Maximum) button
9. Data Hold button
10. Clamp trigger
11. Arrow markings
12. NCV Button
13. NCV Light
14. NCV Sensing Antenna

FUNCTION BUTTONS ON/OFF

To power ON the meter, rotate the Function Selector switch from the OFF setting to any measurement setting. To power OFF the meter, rotate the Function Selector switch to the OFF setting. The AutoPower Off icon will be visible in the display. By default, the meter will automatically power OFF after 10 minutes of inactivity. If the meter automatically powers-OFF while in a measurement setting, press any button to power the meter ON, or rotate Function Selector switch to OFF, then power ON the meter. To deactivate Auto-Power OFF functionality press and hold the "NCV" button before powering ON from the OFF setting. When Auto-Power OFF is deactivated, the AutoPower Off icon will not be visible in the display.

BACKLIGHT
Press Backlight button symbol to turn ON or OFF the backlight. The backlight does not automatically power OFF.

RANGE
The meter defaults to auto-ranging mode . This mode automatically determines the most appropriate measurement range for the testing that is being conducted. To manually force the meter to measure in a different range, use the "RANGE" button .

1. Press the "RANGE" button to manually select measurement range ( is deactivated on the LCD). Repeatedly press the "RANGE" button to cycle through the available ranges, stopping once the desired range is reached.
2. To return to auto-ranging mode, press and hold the "RANGE" button for more than two seconds ( is reactivated).

MAX
When the "MAX" button is pressed, the meter keeps track of the Maximum value as the meter continues to take samples.

1. When measuring, press "MAX" button to display the maximum value. If a new maximum occurs, the display updates with that new value.
2. Press "MAX" button again to return to normal measuring mode.

DATA HOLD
Press the Data Hold button to hold the current measurement on the display. Press again to return to live measuring mode.

NCV
Press and hold the "NCV" button to enter Non-contact Voltage Testing (NCV) mode to test for presence of AC voltage. The NCV icon and "EF" will be present on the display. Approach the conductor under test leading with the sensing antenna . In the presence of AC voltage, the red NCV light will illuminate and audible signals (beeps) will sound. As the NCV sensing antenna approaches the voltage source, the frequency of the audible sound will increase.
Release the "NCV" button to exit NCV testing mode.
NOTE: Only voltages of 40V AC or greater will be detected.

OPERATING INSTRUCTIONS

CONNECTING TEST LEADS
Do not test if leads are improperly seated. Results could cause intermittent display readings. To ensure proper connection, firmly press leads into the input jack completely.

TESTING IN CAT III MEASUREMENT LOCATIONS
Ensure the test lead shield is pressed firmly in place. Failure to use the CATIII / CATIV shield increases arc-flash risk.

TESTING IN CAT II MEASUREMENT LOCATIONS
CAT III / CAT IV shields may be removed for CAT II locations. This will allow testing on recessed conductors such as standard wall outlets. Take care not to lose the shields.

AC CURRENT (LESS THAN 400A)
AC Current is measured by pressing the clamp trigger to open the clamp and placing it around a current-carrying wire. When measuring, care should be taken to ensure that the clamp is completely closed with trigger fully released, and that the wire passes perpendicularly through the center of the clamp in line with the arrow markings .

To measure current:

1. Rotate the Function Selector switch to the 200/400 A setting.
   
2. Place clamp around wire. The current measurement will be shown in the display.
   NOTE: If the measurement is less than 20A, rotate the Function Selector switch to the 2/20 A setting for improved resolution.
   

Disconnect test leads when measuring with the clamp.

AC/DC VOLTAGE (LESS THAN 600V)

1. Insert RED test lead into VΩ jack , and BLACK test lead into COM jack , and rotate function selector switch to the DC Voltage or AC Voltage setting. Note "DC" or "AC" on the display.
   
2. Apply test leads to the circuit to be tested to measure voltage. The meter will auto-range to display the measurement in the most appropriate range.
   NOTE: If "–" appears on the LCD, the test leads are being applied to the circuit in reverse. Swap the position of the leads to correct this.
   NOTE: When in a voltage setting and the test leads are open, readings of order mV may appear on the display. This is noise and is normal. By touching the test leads together to close the circuit the meter will measure zero volts.
   NOTE: To access mV range for V AC the "RANGE" button must be used.
   NOTE: When voltages in excess of 25V AC or 60V DC are measured, the Hazardous Voltage Indicator will appear on the display.

RESISTANCE MEASUREMENTS

1. Insert RED test lead into VΩ jack, and BLACK test lead into COM jack , and rotate function selector switch to the Resistance setting. The resistance symbol will appear on the display.
2. Remove power from circuit.
3. Measure resistance by connecting test leads to circuit. The meter will auto-range to display the measurement in the most appropriate range.
   

NOTE: When in a Resistance setting and the test leads are open (not connected across a resistor), or when a failed resistor is under test, the display will indicate O.L. This is normal.
DO NOT attempt to measure resistance on a live circuit.

CONTINUITY

1. Insert RED test lead into VΩ jack and BLACK test lead into COM jack , and rotate function selector switch to the Continuity setting.
2. Remove power from circuit.
3. Test for continuity by connecting conductor or circuit with test leads. If resistance is measured less than 10Ω, an audible signal will sound and display will show a resistance value indicating continuity. If circuit is open, display will show "OL".
   

DO NOT attempt to measure continuity on a live circuit.

MAINTENANCE

BATTERY REPLACEMENT
When indicator is displayed on LCD, batteries must be replaced.

1. Loosen captive screw and remove battery cover.
2. Replace 3 x AAA batteries (note proper polarity).
3. Replace battery cover and fasten screw securely.

To avoid risk of electric shock, disconnect leads from any voltage source before removing battery door.
To avoid risk of electric shock, do not operate meter while battery door is removed.

CLEANING

Be sure meter is turned off and wipe with a clean, dry lint-free cloth. Do not use abrasive cleaners or solvents.

STORAGE

Remove the batteries when meter is not in use for a prolonged period of time. Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the meter to return to normal operating conditions before using.

CUSTOMER SERVICE
KLEIN TOOLS, INC.
450 Bond Street
Lincolnshire, IL 60069
1-877-775-5346
customerservice@kleintools.com www.kleintools.com