KNOVA KN 8052 Manuel utilisateur
KNOVA
Digital multimeter
Multímetro digital
600V
KN 8052
TABLE OF CONTENTS
Safety information 1
Safety symbols 1
Maintenance 1
During use 2
General description 2
Front panel 3-4
Specications 4
General 4-7
Operating instructions 8-10
Battery & fuse replacement 11
Accessories 11
KNOVA
This multimeter has been designed according to IEC61010-1 concerning
electronic measuring instruments with an overvoltage category (CATII)
and pollution 2. Follow all safety and operation instructions to ensure that
the meter is used safely and is kept in good operating condition.
Full compliance with safety standards can be guaranteed only with test
leads supplied. If necessary, they must be replaced with the type specied
in this manual.
1
SAFETYSYMBOLS
Important safety information, refer to the operating
manual.
Dangerous voltage may be present.
Anti-garbage
Double insulation (Protection class II).
Fuse must be replaced with rating specied in the
manual.
1. SAFETY INFORMATION
MAINTENANCE
• Before opening the case, always disconnect test leads from all
energized circuits.
• For continue protection against re; replace fuse only
with the specied voltage and current ratings:
250mA/250V(Quick Acting) 10A/250V(Quick Acting)
• Never use the meter unless the back cover is in place
and fastened completely.
Do not use abrasives or solvents on the meter. To clean
It, use a damp cloth and mild detergent only.
2
DURINGUSE
• Never exceed the protection limit values indicated in the specications
for each range of measurement.
• When the meter is linked to measurement circuit, do not touch the
unused terminals.
• Never use the meter to measure voltages that might exceed 600V
above earth ground in category II installations.
• When the value scale to be measured is unknown beforehand, set the
range selector at the highest position.
• Before rotating the range selector to change functions, disconnect test
leads from the circuit under test.
• When carrying out measurements on TV or switching power circuits
always remember that there may be high amplitude voltages pulses
at test points, which can damage the meter.
• Always be careful when working with voltages above 60Vdc or 30V ac
rms. Keep ngers behind the probe barriers when making voltage
measurements with test leads.
• Never perform resistance measurements on live circuits.
GENERALDESCRIPTION
The meter is a handheld 31/2 digital multimeter for measuring
DC and AC voltage, DC current, Resistance, Diode, and
Continuity Test, battery operated.
The meter has a back light function to be used in a dark
environment.
KNOVA
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1
2
3
4
5
6
8
7
FRONT PANEL
4
+
-
FRONTPANELDESCRIPTION
1- Non-contact voltage detection indicator (red LED)
2- Display: 3 1/2 digit,(2000 count) LCD.
3- Back light: When this button is pushed, the Back light of display is
turned on. After about 10 seconds, the Back light will be turned off
automatically. In order to turn on the Back light again, just push this
button once.
4- Hold button: When this button is pushed, the display will keep the
last reading and an “ ” symbol will appear on the LCD until you push
it again.
5- Rotary switch: This switch is used to select functions and desired
ranges as well as to turn on/off the meter.
6- “COM” jack : Plug in connector for black (negative) test lead.
7- “10A” jack: Plug in connector for red test lead for10A measurement.
8- “VΩmA” jack: Plug in connector for red (positive) test lead for voltage,
resistance and current (except 10A) measurements.
SPECIFICATIONS
Accuracy is specied for a period of one year after calibration and at 18
to 28℃ (64°F to 82°F) with relative humidity to 80%.
GENERAL
Maximum voltage between terminals and earth ground: CATII 600V
Fuse protection: F 250mA/250V 10A/250V
Power: 9V battery, NEDA 1604 or 6F22
Display: LCD 2000 counts, updates 2-3/ sec.
Measuring method: Dual-slope integration A/D converter
Over range Indication: Only gure “1” on the display
Polarity indication: “-”displayed for negative polarity
Operating Environment: 0 to 40℃
Storage temperature: -10℃ to 50℃.
Low battery indication: “ ”appears on the display
Size: 140mm×67mm×30mm
Weight: Approx.112g.
H
KNOVA
5
Range Resolution Accuracy
200mV 100μV ±0.5% of rdg ± 2 digits
2V 1mV ±0.5% of rdg ± 2 digits
20V 10mV ±0.5% of rdg ± 2 digits
200V 100mV ±0.5% of rdg ± 2 digits
600V 1V ±0.8% of rdg ± 2 digits
Range Resolution Accuracy
200μA 0.1μA ±1% of rdg ± 2 digits
2mA 1μA ±1% of rdg ± 2 digits
20mA 10μA ±1% of rdg ± 2 digits
200mA 100μA ±1.5% of rdg ± 2 digits
10A 10mA ±3% of rdg ± 2 digits
Overload Protection: 250V rms. For 200mV range and 600V dc or rms.
ac for other ranges.
Overload Protection: F 250mA/250V fuse. F 10A/250V fuse
DCVOLTAGE
DCCURRENT
6
Range Resolution Accuracy
200V 100mV ±1.2% of rdg ± 10 digits
600V 1V ±1.2% of rdg ± 10 digits
Range Accuracy
If continuity exists (about less than 100Ω), built-in
buzzer will sound.
Show the approx. forward voltage drop of the diode.
Overload Protection: 600V dc or rms. ac for all ranges.
Frequency range: 40Hz to 400Hz
Response: Average responding, calibrated in rms. of a
sine wave.
Overload Protection: 250V dc or rms. ac.
ACVOLTAGE
DIODE&CONTINUITY
KNOVA
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Range Resolution Accuracy
200Ω 0.1Ω ±0.8% of rdg ± 3 digits
2kΩ 1Ω ±0.8% of rdg ± 2 digits
20kΩ 10Ω ±0.8% of rdg ± 2 digits
200kΩ 100Ω ±0.8% of rdg ± 2 digits
2MΩ 1kΩ ±1.0% of rdg ± 2 digits
Maximum Open Circuit Voltage: 3.2 V
Overload Protection: 250V dc or rms. ac for all ranges.
RESISTANCE
Resolution Alerts
>AC90V Red LED lit
Non-contactvoltagedetection
8
OPERATINGINSTRUCTIONS
DCVOLTAGEMEASUREMENT
1. Connect the red test lead to the “V.Ω.mA” jack and the
black lead to the “COM” jack.
2. Set rotary switch at desired DCV position. If the voltage
to be measured is not known beforehand, set range
switch at the highest range position and then reduce it
until satisfactory resolution is obtained.
3. Connect test leads across the source or load being
measured.
4. Read voltage value on the LCD display along with the
polarity of the red lead connection.
DCCURRENTMEASUREMENT
1. Connect the red test lead to the “V.Ω.mA” jack and the
black test lead to “COM” jack. (For measurements
between 250mA and 10A, remove red lead to“10A”jack.)
2. Set the rotary switch at desired DCA position.
3. Open the circuit in which the current is to be measured, and connect
test leads in series with the circuit.
4. Read current value on LCD display along with the
polarity of red lead connection.
ACVOLTAGEMEASUREMENT
1. Connect the red test lead to “V.Ω. mA” jack and the
black test lead to the “COM” jack.
2. Set the rotary switch at desired ACV position.
3. Connect test leads across the source or load being
measured.
4. Read voltage value on the LCD display.
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