LIMIT DCM 4 User manual

OPERATING MANUAL
Clamp Meter
Limit DCM 4

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CLAMP METER DCM 4
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CLAMP METER DCM 4CLAMP METER DCM 4
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CLAMP METER DCM 4
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CLAMP METER DCM 4
CLAMP METER DCM 4
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CLAMP METER DCM 4
CLAMP METER DCM 4
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CLAMP METER DCM 4
CLAMP METER DCM 4

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English..................................................................................................................4
Svenska .............................................................................................................. 16
Norsk ..................................................................................................................28
Español............................................................................................................... 41
Português ......................................................................................................... 54
Polski..................................................................................................................67
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SAFETY INFORMATION
1. Safety certification
This meter strictly follows the CE standards: EN 61010-1:2010+A1:2019, EN 61010-2-032:2012, EN 61010-
2-033:2012, EN 61326-1:2013, EN 61326-2-2:2013, as well as CAT IV 600 V, CAT III 1000 V, double
insulation and pollution grade 2.
Note: Before each use, verify meter operation by measuring a known voltage.
2. To prevent possible electrical shock, fire or personal injury
2.1 Do not use the meter if it is damaged or not functioning properly. Before using the meter, inspect
the case for cracks or missing plastic. Check the insulation layers.
2.2 Do not use the meter if the rear cover or the battery cover is not completely covered up, it may
pose a shock hazard!
2.3 Keep fingers behind the test leads’ finger guards during measurement, and do not touch exposed
wires, connectors, unused inputs or circuits being measured.
2.4 The function dial should be placed in the correct position before measurement.
2.5 Do not apply voltage over 1000 V between any meter terminal and earth ground to prevent electric
shock or damage to the meter.
2.6 Exercise caution when working with voltages above AC 30 Vrms, 42 Vpeak or DC 60 V. Such
voltages pose a shock hazard.
2.7 Never apply more than the rated voltage and current exceeding the value as marked on the meter.
If the range of the voltage to be measured is unknown, the maximum range should be selected and
then gradually decreased.
2.8 Before measuring the resistance, diode and continuity, switch off the circuit’s power supply and
fully discharge all capacitors to avoid inaccurate measurement.
2.9 To avoid false reading, replace the battery as soon as the battery indicator appears. Replace
the batteries in time to ensure measurement accuracy. Remove the batteries if the meter is not in
use for a long period.
2.10 Do not change the meter’s internal circuit to avoid damage to the meter and injury to the user.
2.11 Do not use or store the meter in high temperature, high humidity, flammable, explosive or strong
magnetic field environments.
2.12 Use a dry doth to clean the case, do not use detergents containing solvents.
2.13 Maintenance and servicing must be carried out by qualified professionals or designated
departments.
3. Battery replacement (picture 1)
3.1 Switch the dial to "OFF "position and remove the test leads from the Input terminal.
3.2 Loosen the screw on the battery cover, remove the cover to replace with 3 × AAA batteries. Identify
the positive and negative pole.
OVERVIEW
Limit digital clamp multimer DCM 4 is a 6000-count handheld true RMS clamp meter with auto range.
The LCD layout provides a clear display for better user experience. It measures direct (VDC)/alternating
(VAC) voltage, direct (DC)/alternating (AC) current, resistance, diode, continuity, capacitance, frequency
and duty ratio. Limit DCM 4 ensures safe operation in CAT IV 600 V, CAT III 1000 V environment.
Warning: Please read "Safety information” carefully before using the meter.
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FEATURES
• LCD with 19 mm digits and backlight
• AC/DC voltage measurement
• AC/DC current measurement
• Resistance measurement
• Continuity/Diode measurement
• DC current measurement
• Capacitance/Frequency measurement
• Low pass filter and low impedance voltage measurement
• Data hold/ MAX/MIN, relative function
• Analogue bar display
SPECIFICATIONS
Safety classification CAT III 1000 V, CAT IV 600 V
Max display 6000 counts
Jaw opening 42 mm
Low battery indication is displayed
Overload display "OL" or "-OL"
Sampling rate 3 times/s
Test position error
If the source under test is not placed at the
centre of the clamp jaws when measuring current,
±1.0% additional error in reading may be produced.
Operating altitude 2000 m
Working temperature and humidity 0°C
~ 30°C (≤80%RH), 30°C ~ 40°C (≤75%RH),
40°C ~ 50°C (≤45%RH)
Storage temperature and humidity -10°C ~ 60°C (≤80%RH)
Product size 272 × 81 × 43.5 mm
Power supply 3 × 1.5 V AAA batteries
Weight 447 g
POSITIONS (PICTURE 2)
1. Clamp jaws
2. Hand guard
3. LED indicator light
4. Jaw opening trigger
5. Function dial
6. LCD display
7. Function buttons
8. NCV sensor
9. FLIGHT button
10. Flashlight LED light
11. Battery cover
12. Input jacks
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SYMBOLS
Symbol Description
Equipment protected throughout by DOUBLE INSULATION or REINFORCED
INSULATION
Earth (ground)
Warning or caution
Alternating current
Direct current
Continuity buzzer
Diode
Capacitance
Alternating current or direct current
Caution, possibility of electric shock
Application around and removal from UNINSULATED HAZARDOUS LIVE
conductors is permitted.
Complies with European Union standards
CAT III Applicable to the testing and measuring of circuits connected to the
distribution part of the building's low-voltage MAINS installation.
CAT IV Applicable to the testing and measuring of circuits connected at the source
of the building’s low-voltage MAINS installation.
LCD DISPLAY (PICTURE 3)
1. Low battery 11. Continuity test
2. Inrush current measurement 12. NCV
3. High voltage 13. Low impedance measurement
4. Auto power off 14. Unit
5. Relative value 15. Analogue bar
6. AC signal 16. Auto range
7. DC signal 17. Max measurement
8. Data hold 18. Min measurement
9. DC current zero 19. Low pass filter measurement
10. Diode test
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OPERATIONS
In addition, pay special attention to the warning sign beside the test lead jack, indicating that the
voltage or current tested must not exceed the values listed on the meter.
The meter automatically turns off if there is no operation for 15 minutes. The meter can be activated by
pressing any key (except FLIGHT button). To disable auto shutdown, long press SELECT key in off state
and turn on the meter.
1. Related measurement of AC current (Picture 4)
1.1 AC Current measurement
1) Turn the function dial to A~ position.
2) Press the trigger to open clamp jaws and fully enclose one conductor (only one conductor can be
measured at a time). For optimum results, centre the conductor in the jaws.
1.2 Current frequency measurement
1) When the function dial is in the AC current position, short press the Hz/INRUSH button to enter the
frequency measurement mode.
2) Short press the Hz/INRUSH button again to exit the frequency measurement mode.
1.3 Inrush current measurement (for AC current)
1) The option is available to select proper range using RANGE button first, or simply long pressing the
Hz/INRUSH button to enter the inrush current measurement mode.
2) Start the device being tested and measure the instantaneous inrush current of the device.
3) Long press the Hz/INRUSH button again to exit the inrush current measurement mode.
Inrush current is the highest AC current (true RMS) within 100 ms of start time, as shown below.
Measured inrush
current
Current
detection
threshold
100 ms sample window (60 Hz)
StopStart
TIME
CURRENT
Note:
• Current should be measured within 0°C~40°C. Do not release the trigger suddenly, as the impact
may briefly change the reading.
• To ensure measurement accuracy, centre the conductor within the jaws. Otherwise, there may be a
±1.0% additional error in reading.
• When testing high current, the clamp will vibrate slightly, which is a normal phenomenon.
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2. DC current measurement (Picture 4a)
2.1 Turn the function dial to the A position.
2.2 Press the trigger to open the clamp jaws, and fully enclose one conductor (only one conductor can
be measured at a time). For optimum results, centre the conductor within the jaws.
Note:
• The current must be measured within 0°C~40°C. For DC current measurement, if the reading is
positive, the direction of current is from top to bottom (from panel to cover). Do not release the
trigger suddenly, as the impact will briefly change the reading.
• To ensure measurement accuracy, centre the conductor within the jaws. Otherwise, there may be a
±1.0% additional error in reading.
• After DC current (especially large current) measurement, the open circuit base may be too large.
Please perform an AC current test to eliminate the residual magnetic signal generated by the jaws.
3. Related measurement of AC voltage and LPF ACV (Picture 5)
3.1 AC voltage measurement
1) Insert the red test lead into the jack and the black test lead into the COM jack.
2) Turn the function dial to V~ position.
3) Short press the SELECT button to switch to AC voltage measurement if required, and connect the
test leads with the measured load or power supply in parallel.
3.2 Voltage frequency measurement
1) When the function dial is set for AC voltage, short press the Hz/INRUSH button to enter the
frequency measurement mode.
2) Short press the Hz/INRUSH button again to exit frequency measurement mode.
3.3 LPF ACV measurement
1) When the function dial is in the AC voltage position, long press SELECT button to enable LPF
ACV function. LPF can measure combined sine wave signals produced by inverters and variable
frequency drives, as shown below.
2) After enabling the LPF ACV function, short press the Hz/INRUSH button to enter the frequency
measurement mode.
3) Short press the Hz/INRUSH button again to exit the frequency measurement mode.
Note:
• Do not input voltage above 1000 V. Although it is possible to measure higher voltage, it may
damage the meter.
• Exercise caution to avoid electric shock when measuring high voltage.
• After completing the measurement, disconnect the test leads from the circuit being tested.
• When the measured voltage is above 30 V, the LCD will display the high voltage alarm prompt “ ”.
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4. DC Voltage measurement (Picture 5a)
4.1 Insert the red test lead into the jack and the black test lead into the COM jack.
4.2 Turn the function dial to the V position.
4.3 If required, short press the SELECT button to switch to DC voltage measurement, and connect the
test leads with the measured load or power supply in parallel.
4.4 Read off the voltage value on the display.
Note:
• Do not input voltage above 1000 V. Although it is possible to measure higher voltage, it may
damage the meter.
• When measuring at 600 mV range, use “REL” measurement mode to obtain accurate readings.
Short-circuit the test leads and then short press the REL or REL ZERO button. Read the measured
voltage after the voltage of the short-circuited test leads is automatically subtracted.
• Exercise caution to avoid electric shock when measuring high voltage.
• After completing the measurement, disconnect the test leads from the circuit being tested.
• When the measured voltage is above 30 V, the LCD will display the high voltage alarm prompt “ ”.
5. LoZ measurement (Picture 6)
5.1 LoZ ACV measurement
1) Insert the red test lead into the jack and the black test lead into the COM jack.
2) Turn the function dial to the LoZ V~ position and connect the test leads with the measured load or
power supply in parallel.
5.2 LoZ ACV frequency measurement
1) When the function dial is in the LoZ ACV position, short press the Hz/INRUSH button to enter the
frequency measurement mode.
2) Short press the Hz/INRUSH button again to exit the frequency measurement mode.
Note:
• Do not input voltage above 1000 V. Although it is possible to measure higher voltage, it may
damage the meter.
• Exercise caution to avoid electric shock when measuring high voltage.
• Test known voltage before use to verify whether the product is functioning correctly.
• After using the LoZ function, allow the meter to rest for 3 minutes before next use.
• LoZ voltage measurement eliminates ghost voltage for more accurate measurement.
• When the measured voltage is above 30 V, the LCD will display the high voltage alarm prompt “ ”.
7. Resistance measurement (Picture 7)
7.1 Insert the red test lead into the jack and the black test lead into the COM jack.
7.2 If required, turn the function dial to the position, short press the SELECT button to switch to
resistance measurement and connect the test leads with both ends of the measured resistance in
parallel.
Note:
• If the resistor measured is open or the resistance exceeds the maximum range, the LCD will display
“OL”.
• Before measuring the resistance online, switch off the circuit’s power supply and fully discharge all
capacitors to ensure accurate measurement.
• When measuring low resistance, the test leads will produce 0.1 Ω~0.2 Ωmeasurement error. Use
“REL” measurement mode to obtain accurate readings. Short-circuit the test leads and then short
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press the REL or REL ZERO button. The low-resistance measurement can be performed after the
meter has automatically subtracted the resistance of the short-circuited test leads.
• If the resistance is not less than 0.5 Ωwhen the test leads are short-circuited, please check the test
leads for abnormalities.
• When measuring resistance above 1 MΩ, it is normal for the reading to take a few seconds to
stablize.
• Exercise caution when working with voltage above AC 30 Vrms, 42 Vpeak or DC 60 V. These
voltages may pose a shock hazard.
• After completing the measurement, disconnect the test leads from the circuit being tested.
8. Continuity test (Picture 7)
8.1 Insert the red test lead into the jack, and the black test lead into the COM jack.
8.2 Turn the function dial to or position, short press SELECT button to switch to continuity
test, and connect the test leads with both ends of measured load in parallel.
8.3 When the resistance measured is ≤30 Ω: The circuit is in good conduction status; the buzzer beeps
continuously. When the resistance measured is ≥70 Ω: there will be no buzzer sound.
Note:
• Before measuring the continuity online, switch the circuit’s power supply off and fully discharge all
capacitors.
• Exercise caution when working with voltages above AC 30 Vrms, 42 Vpeak or DC 60 V. These
voltages may pose a shock hazard.
• After completing the measurement, disconnect the test leads from the circuit being tested.
9. Diode test (Picture 7)
9.1 Insert the red test lead into the jack and the black test lead into the COM jack. The red test
lead’s polarity is “+” and that of the black test lead is “-”.
9.2 Turn the function dial to the position, and short press the SELECT button to switch to diode
test.
9.3 Connect the red probe with the diode anode and the black one with the diode cathode.
9.4 Read the approximate forward voltage of the diode on the display. For silicon PN junction, the
normal value is generally about 500~800 mV.
Note:
• If the diode is open or its polarity is reversed, the LCD will display “OL”.
• Before measuring the diode online, switch the circuit’s power supply off and fully discharge all
capacitors.
• Exercise caution when working with voltages above AC 30 Vrms, 42 Vpeak or DC 60 V. Such
voltages pose a shock hazard.
• After completing the measurement, disconnect the test leads from the circuit being tested.
10. Capacitance measurement (Picture 8)
10.1 Insert the red test lead into the jack and the black one into the COM jack.
10.2 Turn the function dial to the position, short press the SELECT button to switch to capacitance
measurement and connect the test leads with both ends of the measured capacitance in parallel.
Note:
• If the capacitor measured is short-circuited or the capacitance exceeds the maximum range, the
LCD will display “OL”.
• The analogue bar pointer is disabled in capacitance measurement mode. When measuring
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capacitance >600 μF, it may take some time to steady the readings.
• Before measuring, fully discharge all capacitors (especially high-voltage capacitors) to avoid
damage to the meter or injury to the user.
• After completing the measurement, disconnect the test leads from the circuit being tested.
11. Frequency/Duty ratio measurement (Picture 9)
11.1 Insert the red test lead into the jack and the black one into the COM jack.
11.2 Turn the function dial to the Hz% position and connect the test leads with both ends of the
measured signal source in parallel.
11.3 Short press the SELECT button to switch to frequency/duty ratio measurement.
Note:
• To avoid personal injury, do not input voltages higher than 30 Vrms.
• After completing the measurement, disconnect the test leads from the circuit being tested.
12. Non-contact AC voltage sensing (NCV) (Picture 10)
12.1 Turn the function dial to the NCV position and move the NCV sensor close to the wire being tested.
12.2 If there is AC voltage or electromagnetic field in the space, the LCD will display the sensing
intensity from weak to strong by “—”. The buzzer will simultaneously beep intermittently and the
LED indicator light will be on. When no voltage is sensed, the LCD displays “EF”.
13. Auto power off
The meter will automatically shut down after 15 minutes without operating the function switch.
Activate it by pressing any button (except FLIGHT button). To disable the auto power off function, press
and hold the SELECT button in the off state, and turn on the meter.
14. Use of test leads
14.1 Testing in CAT III/CAT IV measurement locations:
Ensure the test lead shields are pressed firmly in place. Failure to use the CAT III/CAT IV shields
increases risk of arc-flash.
14.2 Testing in CAT II measurement locations:
CAT III/CAT IV shields may be removed for CAT II locations. This allows testing of recessed conductors
such as standard wall sockets. Take care not to lose the shields.
14.3 Replace the test lead’s insulation if it is damaged.
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TECHNICAL SPECIFICATION
Accuracy: ±(a% of reading + b digits) 1 year calibration cycle (23°C±5°C, ≤80% RH)
Note: Temperature coefficient = 0.1 × (specified accuracy) / °C (<18°C or >28°C)
1. AC Current ( )
Range Resolution Accuracy Overload protection
60.00 A 0.01 A ± (2.0%+9)
1000 V DC/AC600.0 A 0.1 A ± (2.0%+5)
1000 A 1 A
• Display: True RMS
• Accuracy guarantee: 5%~100% of range. Open circuit allows least significant digit ≤10.
• Frequency response: 40 Hz~400 Hz
• The AC crest factor will reach 3.0 at 3000 counts, while only ≤1.5 at 6000 counts. The additional
error should be added according to the crest factor of a non-sinusoidal wave:
a) Add 4% when crest factor is 1~2
b) Add 5% when crest factor is 2~2.5
c) Add 7% when crest factor is 2.5~3
• For current frequency monitoring, the resolution is 0.1 Hz and accuracy is ± (0.1%+3). The input
amplitude should be ≥10% of range.
2. Inrush Current ( )
Function Range Resolution Accuracy Overload
protection
Inrush current
(ACA)
60.00 A 0.01 A
± (10%+10) 1000 A600.0 A 0.1 A
1000 A 1 A
• measurement time ~ 100ms.
3. DC Current ( )
Range Resolution Accuracy Overload protection
60.00 A 0.01 A
± (2.0%+5) 1000 A600.0 A 0.1 A
1000 A 1 A
• Accuracy guarantee: 5%~100% of range
• Press the REL ZERO button to remove any DC offset that could affect the accuracy of the reading.
4. AC Voltage ( )
Range Resolution Accuracy Overload protection
6.000 V 0.001 V ± (1.2%+3)
1000 A
60.00 V 0.01 V
600.0 V 0.1 V ± (1.0%+8)
1000 V 1 V
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• Display: True RMS
• Accuracy guarantee: 5%~100% of range. Short circuit allows least significant digit ≤5.
• Input impedance: ≥10 MΩ
• Frequency response: 40 Hz~400 Hz
• The AC crest factor will reach 3.0 at 3000 counts, while only ≤1.5 at 6000 counts. The additional
error should be added according to the crest factor of a non-sinusoidal wave:
a) Add 4% when crest factor is 1~2
b) Add 5% when crest factor is 2~2.5
c) Add 7% when crest factor is 2.5~3
• For voltage frequency monitoring, the resolution is 0.1 Hz and accuracy is ±(0.1%+3). The input
amplitude should be ≥10% of range.
5. LPF ACV
Range Resolution Accuracy Overload protection
600.0 V 0.1 V ± (2.0%+5) 1000 A
1000 V 1 V
Display: True RMS
• Accuracy guarantee: 5%~100% of range. Short circuit allows least significant digit ≤5.
• Input impedance: ≥10 MΩ
• Frequency response: 40 Hz~200 Hz
• The AC crest factor will reach 3.0 at 3000 counts, while only ≤1.5 at 6000 counts. The additional
error should be added according to the crest factor of a non-sinusoidal wave as follows:
a) Add 4% when crest factor is 1~2
b) Add 5% when crest factor is 2~2.5
c) Add 7% when crest factor is 2.5~3
• The -3 dB frequency of LPF is about 2.5 kHz
Only manual range for LPF ACV. Use the RANGE button to change the range.
• For voltage frequency monitoring, the resolution is 0.1 Hz and accuracy is ±(0.1%+3). The input
amplitude should be ≥10% of range.
6. LoZ V~
Range Resolution Accuracy Overload protection
600.0 V 0.1 V ± (2.0%+5) 1000 A
1000 V 1 V
• Display: True RMS
• Accuracy guarantee: 5%~100% of range. Short circuit allows least significant digit ≤5.
• Input impedance: About 2 kΩ
• Frequency response: 40 Hz~400 Hz
• The AC crest factor will reach 3.0 at 3000 counts, while only ≤1.5 at 6000 counts. The additional
error should be added according to the crest factor of a non-sinusoidal wave as follows:
a) Add 4% when crest factor is 1~2
b) Add 5% when crest factor is 2~2.5
c) Add 7% when crest factor is 2.5~3
• When the measured voltage is above 220 V, the continuous measurement time cannot exceed 30 s
and the rest interval should be more than 30 s.
• For voltage frequency monitoring, the resolution is 0.1 Hz and accuracy is ±(0.1%+3). The input
amplitude should be ≥10% of range.
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7. DC voltage ( )
Range Resolution Accuracy Overload protection
600.0 mV 0.1 mV ± (0.8%+3)
1000 A
6.000 V 0.001 V
± (0.5%+5)
60.00 V 0.01 V
600.0 V 0.1 V
1000 V 1 V
• Input impedance: ≥10 MΩ
• Accuracy guarantee: 5%~100% of range. Short circuit allows least significant digit ≤5.
8. Resistance ( Ω )
Range Resolution Accuracy Overload protection
600.0 Ω0.1 Ω± (1.0%+3)
1000 A
6.000kΩ0.001 kΩ
± (1.0%+2)60.00 kΩ0.01 kΩ
600.0 kΩ0.1 kΩ
6.000 MΩ0.001 MΩ± (2.0%+8)
60.00 MΩ0.01 MΩ
• Measurement result = displayed value – resistance of shorted test leads
• Open circuit voltage: About 1 V
• Accuracy guarantee: 5%~100% of range
9. Continuity ( )
Range Resolution Accuracy Overload protection
600.0 Ω0.1 Ω
Open circuit: Resistance
≥70 Ω, no beep
Well-connected circuit:
Resistance ≤30 Ω,
consecutive beeps
1000 A DC/AC
• Open circuit voltage: About 1 V
• Resistance value is between 30 Ωand 70 Ω, the Buzzer may beep
10. Diode ( )
Range Resolution Accuracy Overload protection
6.000 V 0.001 V
Open circuit voltage:
About 3 V
Measurable PN junction:
Forward voltage drop ≤3 V
For silicon PN junction, the
normal value is generally
about 0.5~0.8 V.
1000 A DC/AC
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11. Capacitance ( )
Range Resolution Accuracy Overload protection
60.00 nF 0.01 nF ± (4.0%+25)
1000 A DC/AC
600.0 nF 0.1 nF
± (4.0%+5)
6.000 μF0.001 μF
60.00 μF0.01 μF
600.0 μF0.1 μF
6.000 mF 0.001 mF ± (10.0%+9)
60.00 mF 0.01 mF
• Measurement result = displayed value – capacitance of open-circuit test leads
• “REL” measurement mode is recommended for capacitance ≤1 μF
• Accuracy guarantee: 5%~100% of range
12. Frequency/Duty ratio (Hz%)
Range Resolution Accuracy Overload protection
10 Hz~1 MHz 0.01 Hz~1 kHz ± (0.1%+3) 1000 V DC/AC
10.0%~90.0% 0.1% ± (2.6%+7)
• Frequency input amplitude:
10 Hz~100 kHz: 250 mVrms ≤input amplitude ≤20 Vrms
100 kHz~1 MHz: 600 mVrms ≤input amplitude ≤20 Vrms
• Duty ratio:
10%~90%: for square waves of 10 Hz~1 kHz
30%~70%: for square waves of 1 kHz~10 kHz
2 Vpp ≤input amplitude ≤20 Vpp
13. Non-contact AC voltage sensing (NCV)
Range Accuracy Overload protection
NCV
To start sensing, move the NCV
sensor (upper tip) close to a wire.
If no voltage is sensed, the LCD
displays “EF”. As the intensity of
the voltage detected increases,
more segments “—” will be
displayed, with buzzer and LED
flashing more frequently.
1000 V DC/AC
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SÄKERHETSINFORMATION
1. Säkerhetscertifiering
Denna mätare uppfyller krav i CE-standarderna: EN 61010-1:2010+A1:2019, EN 61010-2-032:2012, EN
61010-2-033:2012, EN 61326-1:2013, EN 61326-2-2:2013 samt CAT IV 600 V, CAT III 1000 V, dubbel
isolering och föroreningsgrad 2.
Obs! Mät en känd spänning före varje användning för att försäkra dig om att mätaren fungerar
korrekt.
2. Anvisningar för att förhindra elstöt, brand och personskada
2.1 Använd mätaren endast om den är oskadad och fungerar korrekt. Inspektera mätarens hölje
före användning och försäkra dig om att det inte finns sprickor eller annan skada. Kontrollera
isoleringen.
2.2 Risk för elstöt! Använd mätaren endast om dess bakre skydd och batteriluckan sitter korrekt
installerade!
2.3 Håll alltid fingrarna bakom testsladdarnas fingerskydd under mätning. Vidrör inte exponerade
ledare, kontakter, ej använda ingångar eller kretsar som mäts.
2.4 Försäkra dig om att funktionsvredet är i korrekt läge innan du startar mätningen.
2.5 Risk för elstöt och skada på mätare! Applicera inte högre spänning än 1 000 V mellan mätarens
poler och jord.
2.6 Var mycket försiktig när du arbetar på spänning högre än 30 Vrms (AC), 42 V toppspänning eller
60 VDC. Spänning högre än ovannämnda värden utgör risk för farlig elstöt.
2.7 Applicera aldrig spänning som överstiger märkspänningen eller strömvärdet som anges på
mätaren. Om det spänningsområde som ska mätas inte är känt ställer du in max. spänningsområde.
Minska därefter spänningsområdet gradvis.
2.8 Utför följande före mätning av motstånd, diod och kontinuitet: Bryt strömförsörjningen till kretsen
och ladda ur alla kondensatorer helt för att undvika felaktiga mätresultat.
2.9 Byt batteriet direkt när batteriindikatorn tänds för att undvika felavläsningar. Byt batterierna
innan de är urladdade, för att säkerställa mätnoggrannheten. Ta ur batterierna om mätaren inte ska
användas under en längre tid.
2.10 Byt inte mätarens interna krets. Om du gör det finns det risk för personskada och skada på
mätaren.
2.11 Mätaren får inte användas eller förvaras i miljöer där det är hög temperatur, hög luftfuktighet eller
förekommer starka magnetfält.
2.12 Rengör höljet med en torr trasa. Använd inte rengöringsmedel som innehåller lösningsmedel.
2.13 Underhåll och service får endast utföras av behörig tekniker eller underhållsavdelning.
3. Batteribyte (bild 1)
3.1 Vrid vredet till läge OFF och avlägsna testsladdarna från ingången.
3.2 Skruva ur skruven till batteriluckan, ta bort luckan och byt batterierna (tre AAA-batterier). Försäkra
dig om att du sätter i batterierna åt rätt håll (+/–).
ÖVERSIKT
Limit tångamperemätare/multimeter DCM 4 är en handhållen tångamperemätare som kan visa upp
till 6 000 siffror och sann RMS med automatiskt mätområde. LCD-displayen har mycket tydlig visning.
Den mäter likspänning (VDC)/växelspänning (VAC), likström (DC)/växelström (AC), motstånd, diod,
kontinuitet, kapacitans, frekvens och driftfaktor. Limit DCM 4 säkerställer säker drift i miljö enligt CAT IV
600 V, CAT III 1 000 V.
Varning! Läs avsnittet om säkerhetsinformation innan du använder mätaren.
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EGENSKAPER
• LCD-display med 19 mm höga siffror och bakgrundsbelysning
• Mätning av växel-/likspänning (AC/DC)
• Mätning av växel-/likström (AC/DC)
• Mätning av motstånd
• Mätning av kontinuitet/diod
• Mätning av likström (DC)
• Mätning av kapacitans/frekvens
• Mätning med lågpassfilter och mätning av spänning med låg impedans
• Datahållning/MAX./MIN., relativ funktion
• Analog stapel
SPECIFIKATIONER
Säkerhetsklass CAT III 1000 V, CAT IV 600 V
Max. visning 6000 siffror
Backöppning 42 mm
Indikering av låg batteriladdning visas
Visning av överlast OL eller -OL
Samplingshastighet 3 gånger/sekund
Fel testposition
Om den källa som testas inte är placerad mitt emellan
klämbackarna vid mätning av ström kan felavläsning på
±1,0% uppstå.
Drifthöjd 2000 meter
Drifttemperatur och luftfuktighet 0°C
~ 30°C (≤80%RH), 30°C ~ 40°C (≤75%RH),
40°C ~ 50°C (≤45%RH)
Förvaringstemperatur och
luftfuktighet -10°C till 60°C (≤80%RH)
Produktstorlek 272 × 81 × 43,5 mm
Strömförsörjning Tre AAA-batterier (1,5 V)
Vikt 447 gram
LÄGEN (BILD 2)
1. Klämbackar
2. Handskydd
3. LED-indikatorlampa
4. Avtryckare för backöppning
5. Funktionsvred
6. LCD-display
7. Funktionsknappar
8. NCV-sensor
9. FLIGHT-knapp
10. Ficklampa (LED)
11. Batterilucka
12. Ingångar
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SYMBOLER
Symbol Beskrivning
Utrustning skyddad med DUBBEL ISOLERING
eller FÖRSTÄRKT ISOLERING
Jord
Varning eller försiktighet
Växelström
Likström
Kontinuitetssummer
Diod
Kapacitans
Växelström eller likström
Försiktighet! Risk för elstöt
Applicering runt och borttagande från ledare som är OISOLERADE OCH
STRÖMFÖRANDE är tillåtet.
Uppfyller EU-standarder
CAT III Godkänd för testning och mätning av kretsar anslutna till distributionssidan
på byggnadens elanläggning (lågspänning).
CAT IV Godkänd för testning och mätning av kretsar anslutna till inkommande sida
på byggnadens elanläggning (lågspänning).
LCD-DISPLAY (BILD 3)
1. Låg batteriladdning 11. Kontinuitetstest
2. Mätning av ingångsström 12. NCV
3. Högspänning 13. Mätning av låg impedans
4. Automatisk avstängning 14. Enhet
5. Relativt värde 15. Analog stapel
6. AC-signal 16. Automatiskt mätområde
7. DC-signal 17. Mätning av max.
8. Datahållning 18. Mätning av min.
9. Nollställning likström (DC) 19. Mätning med lågpassfilter
10. Diodtest
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