digital multimeter - Elektronik Lavpris

MS8211
DIGITAL MULTIMETER
Ω
INSTRUCTION MANUAL
CONTENTS
CONTENTS
1. SAFETY INFORM...............................1
4.4 Range Transform................................10
1.1 Preliminary...............................................1
1.2 During use...............................................2
4.5 Auto Power Off....................................10
1.3 Symbols..................................................3
1.4 Maintenance...........................................4
4.7 Measuring DC Voltage........................11
2. DESCRIPTION...................................4
4.9 Measuring Resistance........................14
2.1 Names OF Components..........................5
4.10 Diode Testing...................................15
2.2 Components Elucidation .........................6
4.11 Continuity Testing.............................16
4.6 Preparation For Measurement.............11
4.8 Measuring AC Voltage........................13
4.12 AC Voltage Detect.............................17
3. SPECIFICATIONS.............................6
3.1 General Specifications...........................7
3.2 Electrical Specifications..........................7
5. MAINTENANCE............................19
5.1 Maintenance.......................................19
5.2 Test leads Replacement.....................20
4. OPERATING INSTRUCTION.............9
6. ACCESSORIES............................20
4.1 Data Hold..............................................9
4.2 Maximum Value Measuring
And Hold.............................................10
4.3 Function Transform...............................10
1. SAFETY INFORMATION
WARNING
BE EXTREMELY CAREFUL IN THE USE OF THIS
METER. Improper use of this device can result
in electric shock or destroy of the meter. Follow
all safeguards suggested in this manual and the
normal safety precautions used in working with
electrical circuits.
Do not service this device if you are not qualified
to do so.
To ensure safe operation, and in order to exploit
to the full the functionality of the meter, please
follow the directions in this section carefully.
This meter has been designed according to IEC-1010
concerning electronic measuring instruments with an
overvoltage category CAT II 600V and pollution 2.
Follow all safety and operating instructions to ensure
that the meter is used safely and is kept in good
operating condition.
With proper use and care, the digital meter will give
you years of satisfactory service.
1.1 Preliminary
1.1.1 When using the meter, the user must observe
all normal safety rules concerning:
- Protection against the dangers of electrical 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 When poor condition under harsh preservation
or shipping conditions caused, inspect and
confirm this meter without delay.
01
1.1.4 Before using to check for voltage, always test the
meter on a known live circuit to verify that the detect
function of the meter is working properly.
1.1.5 Test lead or test clip must be in good condition.
Before using verify that the insulation on test lead
or test clip is not damaged and/or the leads wire is
not exposed.
1.1.6 Full compliance with safety standards can be
guaranteed only if used with test leads supplied.
If necessary, they must be replaced with the same
model or same electric ratings.
1.2 During Use
1.2.1 Before using, you must select the right function
and range.
1.2.2 Never exceed the protection limit values indicated
in specifications for each range of measurement.
1.2.3 When the meter is linked to a measurement circuit,
do not touch the probe tip of the meter and test lead
(or test clip).
1.2.4 At the manual range, when the value scale to be
measured is unknown beforehand, select the
highest range.
1.2.5 Do not measure voltage if the voltage on the
terminals exceeds 600V above earth ground.
1.2.6 Always be careful when working voltages above
60V DC or 30V AC rms, keep fingers behind the
probe barrier while measuring.
1.2.7 Never connect the meter leads across a voltage
source while the transform switch is in the
resistance, diode or continuity mode. Doing so can
damage the meter.
1.2.8 Never perform resistance, diode and continuity
measurements on live circuits.
02
1.2.9 ACV detecting is without contact, the probe should
be revolved in the meter completely when use, and
do not contact the COM jack which at the back of the
meter with the test lead (or test clip).
1.2.10 Before rotating the transform switch to change the
function, disconnect the tip of meter and the probe
of the test lead (or test clip) from the circuit under
test.
1.2.11 Never use the meter under the condition of the
explosive air, steam or dirt.
1.2.12 If any faults or abnormalities are observed, the
meter can not be used any more and it has to be
checked out.
1.2.13 Never use the meter unless the rear case is in
place and fastened fully.
1.2.14 Please do not store or use meter in areas exposed
to direct sunlight, high temperature, humidity or
condensation.
1.3 Symbols
Important safety information, refer to the operating
manual.
Double insulation (Protection class II ).
CAT II Overvoltage (Installation) category II,
Pollution Degree 2 per IEC1010-1 refers to the level
of Impulse Withstand Voltage protection provided.
Conforms to european union directive
Earth ground
AC Alternating current
DC Direct current
AC or DC (alternating current or direct current)
Diode
Continuity buzzer
03
M.H The maximum value is being held.
D-H This indicates that the display data is being held.
AUTO Auto range
The battery is not sufficient for proper operation.
1.4 Maintenance
1.4.1 Please do not attempt to adjust or repair the meter
by removing the rear case while voltage is being
applied. A technician who fully understands danger
involved should only carry out such actions.
1.4.2 Before opening the battery cover or case of the
meter, always disconnect the tip of meter and the
probe of the test lead (or test clip) from all tested
circuits.
1.4.3 To avoid the wrong reading causing electricity
attack, when the meter displays“
” , you must
change the battery.
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 transform 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.
2. DESCRIPTION
- This meter is a portable professional measuring
instrument with handsome LCD easily reading.
- Single operation of a transform switch makes
measurement convenient. Overload protection and low
battery indication are provided, this meter is ideal for
use in the fields, workshop, school, hobby and home
applications.
04
- Non-contact detecting is convenient to test the socket
or the lead whether is with power or not.
- This meter has function of auto range and manual range.
- This meter has function of auto power off.
- This meter is with the functions of data hold and
maximum value measure and hold.
- When using, it can show ranges engineering unit
enunciators measuring results.
2.1 Names Of Components
(1) Probe
(2) Rotatable Probe Socket
(3) LED Indicator
(4) Protection Ring
(5) Transform Switch
(6) Sensitivity Adjust Knob
(7) FUNC. Button
(8) RANGE Button
(9) MAX.H Button
(10) DATA-H Button
(11) Panel
(12) LCD Display
(13) COM Jack
2.2 Components Elucidation
- RANGE Button
This button is used to transform Auto range or manual
range.
- FUNC. Button
This button is used to transform function.
- DATA-H Button
This Button is used to hold data.
- MAX.H Button
This button is used to measure and hold the maximum
value.
- Transform Switch
This switch is used to select functions and desired
ranges.
- Probe
Input terminals for V/Ω/
/ and AC voltage detector.
- COM Jack
Common terminal for measurement.
- LCD Display
At V/Ω/
/ range, the measuring result can be
displayed.
- LED Indicator
At TEST range, ACV detecting result can be indicated.
- Rotatable Probe Socket
Rotating the probe in or out of the meter.
- Protection Ring
To keep the hand from the probe behind the ring.
- Sensitivity Adjust Knob
To adjust the sensitivity while ACV detecting.
3. SPECIFICATIONS
Accuracy is specified for a period of year after calibration
and at 18°C to 28°C(64°F to 82°F) with relative humidity
to 75%.
05
06
3.1 General Specifications
3.2.2 AC Voltage
3.1.1 Auto ranges and manual range.
3.1.2 Max. Voltage Between Terminals And Earth Ground:
600V DC or AC
3.1.3 Operating Altitude: 2000 meters (7000 ft.) maximum
3.1.4 Display: 20mm LCD
3.1.5 Max. Show Value: 1999 (3 1/2)
3.1.6 Polarity Indication: '-'indicates negative polarity.
3.1.7 Overrange Indication: Display ‘OL’
3.1.8 Sampling Time: approx. 0.4 second
3.1.9 Unit showing: showing of function and electrical capacity.
3.1.10 Low Battery Indication: ‘
’displayed
3.1.11 Auto power off time: 15 min.
3.1.12 Power Supply: 1.5V×2 AAA battery.
3.1.13 Operating Temperature: 0°C to 40°C (32F to 104F)
3.1.14 Storage Temperature: -10°C to 50°C (10F to 122F)
3.1.15 Dimension: 208×38×29 mm
3.1.16 Weight: approx. 110g (including battery)
- Input Impedance: 10MΩ
- Overload Protection: 200mV range: 250V DC
or AC rms, 2V-600V ranges: DC 600V or AC 600V rms.
- Frequency Range: 40 to 400Hz
- Response: Average, calibrated in rms of sine wave.
- Max. Input Voltage: 600V rms AC
3.2 Electrical Specifications
3.2.3 Resistance
Circumstance Temperature: 235 °C
Relative Humidity: < 75%
3.2.1 DC Voltage
Range
Resolution
200mV
0.1mV
2V
0.001V
20V
0.01V
200V
0.1V
600V
1V
Range
Resolution
200mV
0.1mV
2V
0.001V
20V
0.01V
200V
0.1V
600V
1V
Range
200Ω
Accuracy
- Input Impedance: 10MΩ
- Overload Protection: 200mV range: 250V DC or
AC rms, 2V-600V ranges: DC 600V or AC 600V rms.
- Max. Input Voltage: 600V DC
07
Accuracy
± (1.0% of rdg + 3 digits)
0.001KΩ
0.01KΩ
20MΩ
± (1.0% of rdg + 3 digits)
0.1Ω
2KΩ
2MΩ
± (0.8% of rdg + 3 digits)
Resolution
20KΩ
200KΩ
± (0.7% of rdg + 2 digits)
Accuracy
± (1.0% of rdg + 1 digits)
0.1KΩ
0.001MΩ
0.01MΩ
± (1.0% of rdg + 5 digits)
- Open Circuit Voltage: 0.25V
- Overload Protection: 250V DC or rms AC
08
3.2.4 Continuity
Range
4.2 Maximum Value Measuring And Hold
Function
Built-in buzzer will sound, if resistance
is lower than 50Ω.
- Open circuit voltage: approx. 0.5V
- Overload Protection: 250V DC or rms AC
3.2.5 Diode
Range Resolution
0.001V
Function
Display :read approximate
forward voltage of diode
- Forward DC Current: approx. 1mA
- Reversed DC Voltage: approx.1.5V
- Overload Protection: 250V DC or rms AC
3.2.6 AC Voltage Detect
Range
TEST
Voltage sensitivity >50V,adjust
continuously
At the range of voltage, you can put on “MAX.H”
button, it will hold the maximum value; if you put the
button again, the maximum value will not be held.
4.3 Function Transform
Put down the “ FUNC.” when measuring the voltage.
Meter will be transformed between DC and AC range.
Put “FUNC.” when measuring the resistance, diode
and continuity, meter will transform among them.
4.4 Range Transform
The auto range is used when measuring the voltage and
resistance. Put down the “ RANGE ” if the manual range
is needed. Each time you put down, range will go upward;
the minimum range is transformed if “ RANGE ” is put
down at the maximum range. If the “ RANGE ” is put down
more than two seconds, auto range is used again.
4.5 Auto Power Off
- Non-contact detecting
If there’s no any operation within fifteen minutes after
power is on, meter will auto power off with five short
sounds and a long sound in a minute.
After auto power off, if stir the transform switch or put
down any button of “FUNC.”, “DATA-H”, “ MAX.H”,
“ RANGE”, meter will recover the working condition.
If presses the “FUNC.” when power is on, auto power
off disable.
4. OPERATING INSTRUCTION
NOTE:
4.1 Data Hold
At the TEST range (ACV detecting), there is no auto
power off function
Sensitivity
Frequency
Distance
50HZ
<150mm(change along with
the sensitivity)
If you need data hold when measuring, you can put on
“DATA-H” button, it will hold the reading; if you put the
button again, data hold is not continue.
09
10
4.6 Preparation For Measurement
NOTE:
4.6.1 Set the transform switch to the right range. At the
manual range, when the value scale to be measured
is unknown beforehand, select the highest range.
4.6.2 When measuring, at first, connect to the public (COM)
testing line, then connect the probe tip of the meter to
the circuit under test.
4.6.3 If the battery voltage is less than 2.4V, display will show
“
”, the battery should be changed at this time.
- At the little voltage range, the meter will show unsteady
reading when test leads haven't reach the circuit, it’s
normal because the meter is very sensitivity. When meter
touch the circuit, you can get the true reading.
- At the manual range mode, when only the figure ‘OL’ is
displayed, it indicates overrange situation and the higher
range has to be selected.
- At the manual range mode, when the value scale to be
measured is unknown beforehand, select the range to
the highest position and set down gradually.
4.7 DC Voltage Measuring
WARNING
Risk of Electrocution.
You can't input the voltage which is higher than
600V DC, it's possible to show higher voltage,
but it may damage the inner circuit or cause
electrical shock.
Pay attention to avoid getting an electric shock
when measuring high voltage.
4.7.1 Rotate the probe socket clockwise to spin out the
probe from the meter.
4.7.2 Insert the black test lead or test clip in the COM jack.
4.7.3 Set the transform switch at the
V range position.
4.7.4 Press the “FUNC” Button to transform to DC
measurement. Auto range and manual range can be
transformed by pressing the “RANGE” button.
4.7.5 Connect the probe tip of the meter and probe tip of the
test lead (or test clip) across the power source or be
loaded on the two sides under measurement.
4.7.6 You can get a reading from LCD display. The polarity
of the tested terminal which the tip of the meter
connection will be indicated.
11
12
4.8 Measuring AC Voltage
NOTE:
4.8.1 Rotate the probe socket clockwise to spin out the
probe from the meter.
4.8.2 Insert the black test lead or test clip in the COM jack.
4.8.3 Set the transform switch at the
V range position.
4.8.4 Auto range and manual range can be transformed
by putting the “RANGE”.
4.8.5 Connect the probe tip of the meter to one side of the
tested circuit and probe tip of the test lead (or test
clip) to the other side.
4.8.6 You can get reading from LCD display.
- At the manual range mode, when only the figure ‘OL’ is
displayed, it indicates overrange situation and the
higher range has to be selected.
- At the little voltage range, the meter will show unsteady
reading when test leads haven't reach the circuit, it’s
normal because the meter is very sensitivity. When test
leads touch the circuit, you can get the true reading.
- At the manual range mode, when the value scale to be
measured is unknown beforehand, select the range at
the highest position and set down gradually.
- Transform to the manual range when use the mV range.
4.9 Measuring Resistance
WARNING
Risk of Electrocution.
You can't input the voltage which is higher than
600V rms AC, it's possible to show higher
voltage, but it may damage the inner circuit or
cause electrical shock.
Pay attention to avoid getting an electric shock
when measuring voltage.
13
4.9.1 Rotate the probe socket clockwise to spin out the
probe from the meter.
4.9.2 Insert the black test lead or test clip in the COM jack.
4.9.3 Set the transform switch at the Ω range position.
Auto range or manual range can be transformed by
putting the “RANGE”.
4.9.4 Connect the probe tip of the meter to one side of the
tested circuit and probe tip of the test lead (or test
clip) to the other side.
4.9.5 You can get reading from LCD display.
14
WARNING
Risk of Electrocution.
When measuring in-circuit resistance, be sure
the circuit under test has all power removed
and that all capacitors have been discharged
fully.
NOTE:
- The meter will show the approximate forward voltage
drop of the diode.
- If the meter and the lead connection is reversed, only
figure ‘OL’ will be displayed.
- When the input is not connected, i.e. at open circuit,
the figure ‘OL’ will be displayed.
NOTE:
- At the manual range mode, when only the figure ‘OL’ is
displayed, it indicates overrange situation and the
higher range has to be selected.
- For measuring resistance above 1MΩ, the meter may
take a few seconds to get stable reading.
- When the input is not connected, i.e. at open circuit,
the figure ‘OL’ will be displayed for the overrange
condition.
4.11 Continuity Test
4.10 Testing Diode
4.10.1 Rotate the probe socket clockwise to spin out the
probe from the meter.
4.10.2 Insert the black test lead or test clip in the COM
jack.
4.10.3 Set the transform switch at the
range position.
4.10.4 put down the “FUNC” transformed at
test.
4.10.5 Connect the probe tip of the meter to the anode of
the diode, the black test lead (or test clip) to the
cathode of the diode.
4.10.6 You can get reading from LCD display.
15
WARNING
Risk of Electrocution.
When testing the circuit continuity, be sure
that the power of the circuit has been shut
down and all capacitors have been discharged
fully.
4.11.1 Rotate the probe socket clockwise to spin out the
probe from the meter.
4.11.2 Insert the black test lead or test clip in the COM
jack.
4.11.3 Set the transform switch at the
range position.
4.11.4 Put down the “FUNC.” transformed at
continuity test.
16
4.11.5 Connect the probe tip of the meter to one side of
the tested circuit and probe tip of the test lead
(or test clip) to the other side.
4.11.6 If continuity exists (i.e., resistance less than
about 50Ω), built-in buzzer will sound.
NOTE:
- If the input open circuit (or the circuit resistance
measured is higher than 200Ω), then the figure‘0L’
will be displayed.
4.12.1 Rotate the probe socket anti-clockwise to spin the
probe into the meter.
4.12.2 Set the transform switch at the
V range position.
4.12.3 Be sure that the display is not shown “
”,
otherwise, the battery should be replaced.
4.12.4 Set the transform switch to the TEST range. Then
the green LED of the LED Indicator is bright.
4.12.5 Rotate the sensitivity adjusting knob in the middle
of the transform switchanti-clockwise, set the
meter to the highest detecting sensitivity in order
to enlarge the detecting range.
4.12.6 Put the probe socket close to the lead or the power
socket, If AC electrical voltage is present, the red
LED Indicator which in front of the meter will flash
and the audible warning will sound.
4.12.7 In the places with many leads and jacks, rotate the
sensitivity adjusting knob in the middle of the
transform switch clockwise, set the meter to the
lower detecting sensitivity in order to confirm
which one is electriferous.
4.12 AC Voltage Detect
WARNING
Risk of Electrocution.
When detecting pay attention to avoid getting
an electric shock.
Before using to check for voltage in an outlet,
always test the meter on a known live circuit to
verify that the AC voltage detect function of the
meter is working properly.
keep fingers behind the probe barrier while
measuring.
17
18
NOTE:
5.2 Test leads (Or Test Clip) Replacement
- When using ACV detecting function, always set the
meter to the highest sensitivity.
- In this range, even though there is no any sound and
light indication, the meter will still consume electricity.
- There is no auto power off function in this range.
- Always set the power switch to the OFF position when
the meter is not in use.
5. Maintenance
5.1 Battery Replacement
WARNING
Before attempting to open the battery cover
of the meter, be sure that the probe tip of the
meter and test lead (or test clip) have been
disconnected from measurement circuit to
avoid electric shock hazard.
WARNING
Full in compliance with safety standards can be
guaranteed only if used with test leads supplied.
If necessary, they must be replaced with the
same model or same electric ratings. Electric
ratings of the test leads: 600V 10A.
You must be replaced the test lead if the lead is
exposed.
6. Accessories
(1)
est Lead: Electric Ratings 600V 10A
(2)
Test Clip: Electric Ratings 600V 10A one piece
one piece
(3)
Battery:1.5V, AAA
two pieces
(4)
Instruction Manual
one piece
5.1.1 If the sign ‘
’ appears on the LCD display, it
indicates that the battery should be replaced.
5.1.2 Loosen the screw fixing the battery cover and
remove it.
5.1.3 Replace the exhausted battery with a new one.
5.1.4 Put the battery cover as its origin.
19
20
HYS006755
Download PDF
Similar pages