Klein Tools CL390 User manual

INSTRUCTION MANUAL
ENGLISH
400A AC/DC Auto-Ranging
Digital Clamp Meter
True RMS
Measurement
Technology
600V
400A
40M
Ω
• AC/DC CURRENT
• HIGH VISIBILITY
DISPLAY
• NON-CONTACT
VOLTAGE TESTING
• DC MICRO-AMPS
• AUTO-RANGING
• DATA & RANGE HOLD
• TEMPERATURE
CL390
2m
-40° –
1832°F
-40° –
1000°C
5001748
400A AC/DC Auto-Ranging
Digital Clamp Meter
True RMS
Measurement
AC/DC CURRENT
HIGH VISIBILITY
VOLTAGE TESTING
DC MICRO-AMPS
AUTO-RANGING
DATA & RANGE HOLD
Digital Clamp Meter
True RMS
Measurement
VOLTAGE TESTING
DATA & RANGE HOLD
CAT III
600V
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GENERAL SPECIFICATIONS
Klein Tools CL390 is an automatically ranging true root mean
square (TRMS) digital clamp meter that measures AC/DC current
via the clamp, AC/DC voltage, DC microamps, resistance, continuity,
frequency, capacitance, tests diodes via test-leads, and temperature
via a thermocouple probe. It features a high visibility, reverse contrast
LCD display that optimizes viewability both in dark or bright ambient
lighting.
• Operating Altitude: 6562 ft. (2000m)
• Relative Humidity: <95% non-condensing
• Operating Temp: 32°to 122°F (0°to 50°C)
• Storage Temp: 14°to 122°F (-10°to 50°C)
• Accuracy: Values stated at 65° to 83°F (18° to 28°C)
• Temp Coefcient: 0.1 x (Quoted Accuracy) per °C above
28°C or below 18°C, corrections are required when ambient
working temp is outside of Accuracy Temp range
• Dimensions: 8.46" x 3.54" x 1.50" (215 x 90 x 38 mm)
• Weight: 10.26 oz. (291 g) including batteries
• Calibration: Accurate for one year
• Auto Power-Off (APO): After approx. 5 minutes of inactivity
• Standards: IEC EN 61010-1, 61010-2-032, 61010-2-033.
IEC EN 61326-1, 61326-2-2.
Conforms to UL STD.61010-1,
61010-2-032,61010-2-033;
Certified to CSA STD.C22.2 NO. 61010-1,
61010-2-032,61010-2-033.
• Pollution degree: 2
• Accuracy: ± (% of reading + # of least significant digits)
• Drop Protection: 6.6 ft. (2m)
• Safety Rating: CATIII 600V, Class 2, Double insulation
CAT III: Measurement category III is applicable to test and
measuring circuits connected to the distribution part of the
building’s low-voltage MAINS installation.
• Electromagnetic Environment: IEC EN 61326-1. This
equipment meets requirements for use in basic and controlled
electromagnetic environments like residential properties,
business premises, and light-industrial locations.
Specifications subject to change.
ENGLISH
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ELECTRICAL SPECIFICATIONS
Function Range Resolution Accuracy
AC Voltage
(V AC)
400.0mV 0.1mV ±(1.8% + 5 digits)
4.000V 0.001V ±(1.5% + 5 digits)
40.00V 0.01V ±(1.2% + 5 digits)
400.0V 0.1V
600V 1V ±(1.5% + 5 digits)
DC Voltage
(V DC)
400.0mV 0.1mV ±(1.0% + 8 digits)
4.000V 0.001V
±(0.8% + 3 digits)40.00V 0.01V
400.0V 0.1V
600V 1V ±(1.0% + 3 digits)
Input Impedance: ~10MΩ
Frequency Range: 45 to 400Hz
Maximum Input: 600V AC RMS or 600V DC
AC Current
(A AC)
40.00A 0.01A ±(2.0% + 9 digits)
400.0A 0.1A
DC Current
(A DC)
40.00A 0.01A ±(2.0% + 9 digits)
400.0A 0.1A
Frequency Range: 50 to 60Hz
Minimum Current Measurable: 0.3A AC or DC
DC
Microamps
(DC µ) 200µA 0.1µA ±(1.0% + 5 digits)
Maximum Input: 600V AC RMS or 600V DC
Resistance
400.0Ω 0.1Ω ±(1.2% + 5 digits)
4.000kΩ 0.001kΩ
±(1.2% + 3 digits)
40.00kΩ 0.01kΩ
400.0kΩ 0.1kΩ
4.000MΩ 0.001MΩ
40.00MΩ 0.01MΩ ±(2.0% + 5 digits)
Maximum Input: 600V AC RMS or 600V DC
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OTHER MEASUREMENT APPLICATIONS
Maximum Input: 600V AC RMS or 600V DC
•Diode Test: Approx. 1mA, open circuit voltage ~3.0V DC
•Continuity Check: Audible signal <10Ω, max current 1.5mA
•Sampling Frequency: 3 samples per second
•Auto Power off: After ~5 minutes of inactivity.
•Over Limit: "OL" indicated on display
•Polarity: "-" on display indicates negative polarity
•Display: 3-3/4 digit, 4000 Count LCD
ELECTRICAL SPECIFICATIONS
Function Range Resolution Accuracy
Capacitance
40.00nF 0.01nF ±(4% + 25 digits)
400.0nF 0.1nF
±(4% + 8 digits)
4.000μF 0.001μF
40.00μF 0.01μF
400.0μF 0.1μF
4.000mF 0.001mF ±(5% + 9 digits)
Maximum Input: 600V AC RMS or 600V DC
Temperature
°F
-40° to 10°F
1 °F
±(1.2% + 7 digits)
11° to 1832°F ±(1.2% + 6 digits)
Temperature
°C
-40° to -12°C
1 °C
±(1.2% + 4 digits)
-11° to 1000°C ±(1.2% + 3 digits)
Maximum Input: 600V AC RMS or 600V DC
Frequency 10Hz to
60kHz
0.001Hz
to 0.01kHz ±(0.1% + 5 digits)
Duty Cycle
0.1% to 99.9%
≤1000kHz
0.1% ±1.5%
(Range: 10% – 90%)
Maximum Input: 600V AC RMS or 600V DC
Voltage Range: 8V to 240V AC RMS
Pulse Width: >0.1ms, must be zero-crossing signal.
ENGLISH
WARNINGS
To ensure safe operation and service of the meter, follow these
instructions. Failure to observe these warnings can result in
severe injury or death.
•Before each use verify meter operation by measuring a known
voltage or current.
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WARNINGS
•Never use the meter on a circuit with voltages that exceed the
category based rating of this meter.
•Do not use the meter during electrical storms or in wet weather.
•Do not use the meter or test leads if they appear to be damaged.
•Use only with CAT III or CAT IV rated test leads.
•Ensure test leads are fully seated into jacks, and keep fingers away
from the metal probe contacts when making measurements.
•Use caution when working with voltages above 25V AC RMS or
60V DC. Such voltages pose a shock hazard.
•To avoid false readings that can lead to electrical shock, replace
batteries when a low battery indicator appears.
•Do not attempt to measure resistance or continuity on a live circuit.
•Always adhere to local and national safety codes. Use personal
protective equipment to prevent shock and arc blast injury where
hazardous live conductors are exposed.
•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
SYMBOLS ON METER
AC/DC Current Resistance (in Ohms)
NCV
Non-Contact Voltage tester Audible Continuity
Double Insulated Class II
μA
DC Microamps
Warning or Caution Risk of Electrical Shock
Diode Capacitance
Hz
Frequency
%
Duty-cycle
V Voltage (Volts) A Amperage (Amps)
° F ° C
Temperature (Fahrenheit / Celsius)
SEL
Select
+
Positive
–
Negative
COM
Common Ground
Backlight Brightness
OFF
Power Off
SYMBOLS ON LCD
AC AC (Alternating Current) DC DC (Direct Current)
Negative Reading Data Hold
Auto Ranging MAX Maximum Value Hold
F
Farrads Diode
NCV
Non-Contact Voltage Tester Auto Power Off
Low Battery Audible Continuity
° F
Degrees (Fahrenheit)
° C
Degrees (Celsius)
M Mega (value x 10
6
) k kilo (value x 10
3
)
m milli (value x 10
-3
) μ micro (value x 10
-6
)
n nano (value x 10
-9
) V Volts
A Amps Ohms
Hz% Frequency/Duty Cycle
ZERO
DC Current Zero Function
Hazardous Voltage Indicator Relative Mode
MIN Minimum Value Hold MAX Maximum Value Hold
MAX-MIN
Difference between MAX and MIN values
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FEATURE DETAILS
ENGLISH
NOTE: There are no user-serviceable parts inside meter.
1.
4000 count LCD display
8.
"REL/ZERO" button
2.
Function selector switch
9.
HOLD/Brightness button
3.
Clamp
10.
Clamp trigger
4.
"COM" jack
11.
Arrow markings
5.
"VΩµA" jack
12.
"SEL/NCV" button
6.
"RANGE" button
13.
NCV Light
7.
"MAX/MIN" button
14.
NCV Sensing Antenna
1
6
2
9
3
10
14
5
8
7
4
11
12
13
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FUNCTION BUTTONS
ON/OFF
To power ON the meter, rotate the Function Selector switch
2
from
the OFF setting to any measurement setting. To power OFF the meter,
rotate the Function Selector switch
2
to the OFF setting. The Auto-
Power Off icon will be visible in the display. By default, the meter
will automatically power OFF after 5 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
2
switch
to OFF, then power ON the meter.
To deactivate Auto-Power OFF
functionality press and hold the "SEL/NCV" button
12
before powering
ON from the OFF setting. When Auto-Power OFF is deactivated, the
Auto-Power Off icon will not be visible in the display.
SEL / NCV BUTTON (FOR SECONDARY FUNCTIONS)
Pushing the SEL/NCV button
12
activates the secondary function
for each application accessible by the function selector switch
2
.
For voltage and current (excluding DC uA), it toggles between AC
and DC. For the other functions, it switches between °F and °C,
between Hz and % Duty-cycle, and between Continuity, Resistance,
Capacitance and Diode-Test. The default function for each application
is printed on the meter in white; the secondary function or functions
for each setting is printed on the meter in orange.
SEL / NCV BUTTON (FOR NCV TESTING)
Press and hold the SEL/NCV button
12
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
14
. In the presence of AC
voltage, the red NCV light
13
will flash, audible signals (beeps) will
sound, and dashes will appear on the display.
As the NCV sensing
antenna
14
approaches the voltage source, more dashes will be
presented on the display and the frequency of the audible sound will
increase. Release the SEL/NCV button to exit NCV testing mode
NOTE: Only voltages of 40V AC or greater will be detected.
BACKLIGHT BRIGHTNESS
Press and hold the HOLD/Brightness button
9
to toggle between
high and low brightness for the backlight. By default, the meter will
use the low brightness setting.
RANGE
The meter defaults to auto-ranging mode for voltage and resistance
measurements. This mode automatically determines the most
appropriate measurement range for the testing that is being conducted.
The icon will be visible in the display. To manually force the meter
to measure in a different range, use the "RANGE" button
6
.
1. Press the "RANGE" button
6
to manually select measurement
range ( is deactivated on the LCD). Repeatedly press the
"RANGE" button
6
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
6
for more than two seconds ( is reactivated).
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MAX/MIN
The "MAX/MIN" function can be used when measuring with voltage,
current, resistance, temperature, and DC μA functions. When the
"MAX/MIN" button
7
is pressed, the meter keeps track of the
Maximum and Minimum values, and the difference between the
Maximum and Minimum values while continuing to take samples.
1. When measuring, press "MAX/MIN" button
7
to toggle between
the Maximum value (MAX), the Minimum value (MIN), and the
difference between Maximum and Minimum (MAX-MIN) values.
" MAX ", " MIN ", or " MAX-MIN " will appear on the display, indicating
the value being shown. If a new maximum or minimum occurs the
display updates with that new value.
2. Press "MAX/MIN" button
7
for more than two seconds to return
to normal measuring mode.
RELATIVE MODE
REL Measurement: Press REL/ZERO
8
to initiate measurement
relative to the current reading. The REL icon will be present on
the display. Subsequent measurements are displayed relative to
the original measurement. (Applies to AC/DC Voltage, AC Current,
Capacitance, DC μA, and Temperature). Press REL/ZERO
8
again to
exit relative mode.
DC ZERO Function: When measuring DC current with the clamp,
press REL/ZERO to activate the DC current zero function. This will set
the display to zero by subtracting the current value as an offset. The
ZERO icon will be present on the display. Press REL/ZERO
8
again
to exit DC current zero mode.
FUNCTION BUTTONS
ENGLISH
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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.
5/32"
(4 mm)
.7" (18 mm)
INCORRECT
CORRECT
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ENGLISH
OPERATING INSTRUCTIONS
AC/DC CURRENT (LESS
THAN 400A)
AC Current is measured by
pressing the clamp trigger
10
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
10
fully released, and
that the wire passes perpendicularly through the center of the clamp
in line with the arrow markings
11
.
To measure current:
1. Rotate the Function Selector switch
2
to the 400A setting.
2. Place clamp around wire. The current
measurement will be shown in the display.
NOTE: The meter defaults to AC measurement. Press the SEL/NCV
button to toggle between AC and DC modes. The AC or DC icon on
the display indicates which mode is selected.
NOTE: If the measurement is less than 40A, rotate the Function
Selector switch
2
to the 4/40A setting for improved resolution.
NOTE: If non-zero values are displayed prior to measuring in DC
current mode, a DC zero offset correction is required. With meter in
DC current mode, press the REL/ZERO button
8
to activate the DC
current ZERO function. ZERO icon will be present on the display.
Subsequent DC current measurements automatically subtract the
offset correction for improved accuracy. Press REL/ZERO button
8
to return to normal measuring mode.
NOTE: Do not use DC current function if the Magnetic Hanger
accessory is attached to the back of the meter. Interferences from the
magnet can lead to inaccurate measurements.
Disconnect test leads when measuring with the clamp.
WIRE
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OPERATING INSTRUCTIONS
AC/DC VOLTAGE (LESS THAN 600V)
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Vsetting for AC or DC measurements. The meter defaults to
AC measurement. To measure DC, press the SEL/NCV button
12
to toggle between AC and DC modes. The AC or DC icon on the
LCD indicates which mode is selected.
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, this indicates negative polarity for
DC voltage.
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: When voltages in excess of 25V AC or 60V DC are measured
the hazardous voltage indicator will be present on the display.
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ENGLISH
CONTINUITY
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Continuity/Resistance/Capacitance/Diode-Test setting.
NOTE: The meter defaults to Continuity testing in this mode. Ensure
that the Continuity Testing icon is visible on the display. If not,
press the "SEL/NCV" button
12
repeatedly until the icon is
shown.
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.
OPERATING INSTRUCTIONS
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OPERATING INSTRUCTIONS
RESISTANCE MEASUREMENTS
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Continuity/Resistance/Capacitance/Diode-Test setting.
NOTE: The meter defaults to Continuity testing in this mode. Press
the "SEL/NCV" button
12
repeatedly until the resistance icon
appears 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 "OL" This is normal.
DO NOT attempt to measure resistance on a live circuit.
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ENGLISH
CAPACITANCE
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Continuity/Resistance/Capacitance/Diode-Test setting.
NOTE: The meter defaults to Continuity testing in this mode. To
measure capacitance, press the "SEL/NCV" button
12
repeatedly
until nF appears on the display.
2. Remove power from circuit.
3. Measure capacitance by connecting test leads across the
capacitor. The meter will auto-range to display the measurement
in the most appropriate range.
OPERATING INSTRUCTIONS
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OPERATING INSTRUCTIONS
DIODE TEST
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Continuity/Resistance/Capacitance/Diode-Test setting.
NOTE: The meter defaults to Continuity testing in this mode.
Press the "SEL/NCV" button
12
repeatedly until the diode icon
appears on the display.
Touch test leads to diode. A reading of 200-800mV on display
indicates forward bias, "OL" indicates reverse bias. An open device
will show "OL" in both polarities. A shorted device will show
approximately 0mV.
µA DC CURENT (LESS THAN 200 µA)
1. Insert RED test lead into VΩµA jack
5
, and BLACK test lead into
COM jack
4
, and rotate function selector switch
2
to the
DC μA setting. The "μA" and "DC" icons will appear on the display.
2. Remove power from circuit and open circuit at measurement point.
3. Connect test leads in series with the circuit.
4. Apply power to the circuit to take the measurement.
DO NOT attempt to measure more than 200µA.
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ENGLISH
TEMPERATURE
1. Insert K-type thermocouple into the VΩµA
5
and COM
4
jacks
(observe polarity markings on thermocouple and meter), and rotate
function selector switch
2
to the Temperature setting.
NOTE: The meter defaults to Fahrenheit scale in this mode. To enter
Celsius scale, press the "SEL/NCV" button
12
once. Ensure that the
appropriate icon (either
°F or °C ) appears on the display.
2. To measure temperature, make contact between the
thermocouple tip and the object being measured. When
thermocouple tip and object are in thermal equilibrium, the
measurement on the display will stabilize.
Remove thermocouple before switching meter to other
measurement functions.
The thermocouple included with the original purchase
is suitable for temperatures below 446°F / 230°C only. To
measure higher temperatures, a K-type thermocouple
with the appropriate measurement range should be used.
OPERATING INSTRUCTIONS
FREQUENCY / DUTY-CYCLE
1. Insert RED test lead into VΩµA jack
5
and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Frequency/Duty-Cycle setting.
NOTE: The meter defaults to Frequency testing in this mode. To enter
Duty-Cycle testing mode, press the "SEL/NCV" button
12
once. Ensure
that the appropriate icon (either
Hz or % ) appears on the display.
2. Measure by connecting test leads across the circuit.
Red leadBlack lead
K-Type
Thermocouple
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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.
T o 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.
Replace battery cover and fasten screw securely.
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