DVM990BL |
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DIGITAL MULTIMETER |
MULTIMETRE DIGITAL |
OPERATING MANUAL |
MANUEL D’UTILISATION |
DIGITALE MULTIMETER |
DIGITALES MULTIMETER |
BEDIENINGSHANDLEIDING |
BEDIENUNGSANLEITUNG |
MULTÍMETRO DÍGITAL |
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MANUAL DEL USUARIO |
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1.SAFETY INFORMATION
WARNING
To ensure safe operation, and in order to exploit to the full functionality of the meter, please follow the directions in this section carefully.
This multimeter has been designed according to IEC-1010 for electronic measuring instruments, with an overvoltage category CAT II and pollution category 2.
Follow all safety and operating instructions to ensure that the meter is used safely and is kept in good operating condition.
1.1.PRELIMINARY
1.1.1.When using the meter, the user must observe all normal safety rules concerning:
∙protection against the dangers of electric current
∙protection of the meter against misuse
1.1.2.When the meter is delivered, check that it has not been damaged in transit.
1.1.3.If in a poor condition due to harsh storage or shipping conditions, immediately inspect the meter and confirm its condition.
1.1.4.Test leads must be in good condition. Before using check that the test lead insulation is not damaged and/or the lead wire is not exposed.
1.1.5.Full compliance with safety standards can only be guaranteed if used with the test leads supplied. If necessary, they must be replaced with leads of the same type with the same electric ratings.
1.2.DURING USE
1.2.1.Never exceed the protection limit values indicated in the specifications for each measurement range.
1.2.2.When the meter is connected to a circuit under measurement, do not touch unused terminals.
1.2.3.If the value to be measured is unknown beforehand, set the range selector to the highest position.
1.2.4.Do not measure voltage if the voltage on the terminals exceeds 1000V above earth.
1.2.5.Always be careful when working with voltages above 60V DC or 30V AC rms, keep your fingers behind the probe barriers while measuring.
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1.2.6.Before rotating the range selector to change functions, disconnect the test leads from the circuit under test.
1.2.7.Never connect the meter leads across a voltage source while the function switch is in the current, resistance, diode or continuity mode. Doing so can damage the meter. When doing measurements on TV or power switching circuits always remember that there may be high amplitude voltage pulses at test points which can damage the meter.
1.2.9.Never perform resistance measurements on live circuits.
1.2.10.Never perform capacitance measurements unless the capacitor to be measured has been fully discharged.
1.2.11.If any faults or abnormalities are observed, the meter should not be used and it needs to be inspected.
1.2.12.Never use the meter unless the back of the casing is in place and fastened securely.
1.2.13.Do not store or use the meter in areas exposed to direct sunlight, high temperature, humidity or condensation.
1.3.SYMBOLS
Important safety information, refer to the operating manual.
Dangerous voltage may be present.
Double insulation (Protection Class II)
Earth
1.4.MAINTENANCE
1.4.1.Do not attempt to adjust or repair the meter by removing the back of the casing while voltage is applied. Only a technician who fully understands the danger involved should carry out such operations.
1.4.2.Before opening the meter battery cover, always disconnect the test leads from all sources of electric current.
1.4.3.For continued protection, only replace the fuse with the specified voltage and current ratings:
F1: F 200mA/250V (quick acting) F2: F 10A/250V (quick acting)
1.4.4.Do not use abrasives or solvents on the meter, use a damp cloth and mild detergent only.
1.4.5.Always set the power switch to the OFF position when the meter is not in use.
1.4.6.If the meter is to be stored for a long period of time, the batteries should be removed to prevent damage to the unit.
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2.DESCRIPTION
2.1.NAMES OF COMPONENTS
(1)LCD display
(2)Power switch (POWER)
(3)Black light switch (
)
(4)Data hold switch (H)
(5)Rotary switch
(6)Input socket
(7)Case
(8)Battery door
(9)Brace
(10)Screw
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2.2. FUNCTION AND RANGE SELECTOR
-This meter is a portable professional measuring instrument with a large LCD and back light for easy reading.
-This meter has built-in protection to prevent the test leads being connected incorrectly. The input socket for the red test lead senses the correct functions and ranges. When the rotary switch cannot be turned, do not force it as it means that the selected range isn’t suitable for what the red lead is connected to. Pull out the red lead and then select the required range. This provides protection for the meter in order to avoid damage through incorrect operation.
-This meter has a data hold function.
-A rotary switch is used to select the functions and the ranges.
3.SPECIFICATIONS
Accuracy is specified for a period of one year after calibration and at 18°C to 28°C (64°F to 82°F) with relative humidity to 75%.
3.1.GENERAL SPECIFICATIONS
∙30 ranges of functions.
∙Over range protection for all ranges.
∙Operating altitude: 2000m max.
∙Max. voltage between terminals and earth: 1000V DC or AC (peak value)
∙Fuse protection: F1 200mA/250V F2 10A/250V
∙Display: 28mm LCD, word is 28mm high
∙Max display value: 1999 (3 1/2)
∙Polarity indication: "-" indicates negative polarity
∙Over range indication: displays "1" or "-1"
∙Sampling time: approx. 0.4 seconds
∙Power supply: 9V battery, 6F22 or NEDA 1604
∙Low battery indication: " 
" displayed
∙Temperature factor: < 0.1 x accuracy / °C
∙Operating temperature: 0°C to 40°C (32°F to 104°F)
∙Storage temperature: -10°C to 50°C (10°F to 122°F)
∙Dimensions: 191 x 82 x 36mm (without holster)
∙Weight: approx. 280g (including battery)
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