Aktakom AMM-1008 User manual

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Input Limits
Function Maximum Input
V DC or V AC 1000V DC, 700V AC
mA DC/AC 200mA DC/AC
A DC/AC 20A DC/AC (30 seconds
max every 15 minutes)
Frequency, Resistance,
Capacitance, Diode,
Continuity
250V DC/AC
Temperature 250V DC/AC
SAFETY SYMBOLS
This symbol adjacent to another symbol, terminal or
operating device indicates that the operator must
refer to an explanation in the Operating Instructions
to avoid personal injury or damage to the meter.
This
WARNING symbol indicates a potentially
hazardous situation, which if not avoided, could
result in death or serious injury.
This
CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may
result damage to the product.
This symbol advises the user that the terminal(s) so
marked must not be connected to a circuit point at
which the voltage with respect to earth ground
exceeds (in this case) 1000 VAC or VDC.
This symbol adjacent to one or more terminals
identifies them as being associated with ranges
that may, in normal use, be subjected to
particularly hazardous voltages. For maximum
safety, the meter and its test leads should not be
handled when these terminals are energized.
CONTROLS AND JACKS
WARNING
CAUTION
1. Large 2000 count Liquid Crystal Display
With backlight and HOLD, ഒ, ഘ, BAT symbolic signs.
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2. Function
switch
3. COM (negative) input jack.
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4. V,˖,CAP, Hz, TEMP. input jack
5. mA input jack for mA DC or AC measurements
6. 20A (positive) input jack for 20A DC or
AC measurements.
7. Data Hold pushbutton
8. ഒ/ഘpushbutton.
9. Backlight pushbutton.
10. Power pushbutton: the power button turns the meter
ON or OFF.
SPECIFICATIONS
The instrument complies with: EN61010-1.
Insulation: Class2, Double insulation.
Overvoltage category: CATII - 1000V.
Display: 2000 counts LCD display with function indication.
Polarity: Automatic, (-) negative polarity indication.
Overrange: “OL” mark indication.
Low battery indication: The “BAT” is displayed when the
battery voltage drops below the operating level.
Measurement rate: 2 times per second, nominal.
Operating environment: 0 oC to 50 oC (32
o
F to 122
o
F) at
< 70 % relative humidity.
Storage temperature: -20 oC to 60 oC (-4
o
F to 140
o
F) at <
80 % relative humidity.
For inside use, max height: 2000m
Pollution degree: 2
Power: One 9V battery , NEDA 1604, IEC 6F22.
Dimensions: 195 (H) x92 (W) x 38 (D) mm
Weight: Approx.: 380g.
Accuracy is given at 18 oC to 28 oC (65
o
F to 83
o
F), less
than 70 % RH
DC Voltage
Range Resolution Accuracy
200.0mV 0.1mV
2.000V 1mV
20.00V 10mV
200.0V 100mV
+0.5% of rdg + 2 dgts
1000V 1V +0.8% of rdg + 2 dgts
Input Impedance: 10M:.
200mV range Maximum Input: 250V dc or 250V ac rms.
Maximum Input: 1000V dc or 700V ac rms.
AC Voltage
Range Resolution Accuracy
2.000V 1mV
20.00V 10mV
200.0V 100mV
+1.0% of rdg + 3 dgts
700V 1V +1.2% of rdg + 5 dgts
Input Impedance: 10M:.
Frequency Range:50 to 400Hz
Maximum Input: 1000V dc or 700V ac rms.
DC Current
Range Resolution Accuracy
2.000mA 1uA +1.0% of rdg + 3 dgts
20.00mA 10uA
200.0mA 100uA
+1.5% of rdg + 3 dgts
20.00A 10mA +2.5% of rdg + 10 dgts
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Overload Protection: 0.2A / 250V and 20A / 250V Fuse.
Maximum Input: 200mA dc or 200mA ac rms on mA ranges,
20A dc or ac rms on 20A range.
AC Current
Range Resolution Accuracy
2.000mA 1uA +1.2% of rdg + 3 dgts
20.00mA 10uA
200.0mA 100uA
+2.0% of rdg + 3 dgts
20.00A 10mA +3% of rdg + 10 dgts
Overload Protection: 0.2A / 250V and 20A / 250V Fuse.
Frequency Range: 50 to 400 Hz
Maximum Input: 200mA dc or 200mA ac rms on mA ranges,
20A dc or ac rms on 20A range.
Resistance
Range Resolution Accuracy
200.0˖0.1˖+1.0% of rdg + 4 dgts
2.000k˖1˖+1.0% of rdg + 2 dgts
20.00k˖10˖
200.0k˖100˖
2.000M˖1k˖
+1.2% of rdg + 2 dgts
20.00M˖10k˖+2.0% of rdg + 5 dgts
Input Protection: 250V dc or 250V ac rms.
Capacitance
Range Resolution Accuracy
2.000nF 1pF +4.0% of rdg+10dgts
20.00nF 10pF +4.0% of rdg + 3 dgts
200.0nF 0.1nF
2.000uF 1nF
+4.0% of rdg + 3 dgts
200.0uF 0.1uF +4.0% of rdg + 5 dgts
Input Protection: 250V dc or 250V ac rms.
Frequency
Range Resolution Accuracy
20.00kHz 0.01Hz +1.5% of rdg + 5 dgts
Sensitivity: 200mV~ 10V RMS ;
Overload protection: 250V dc or ac rms.
Temperature
Range Resolution Accuracy
-20
o
C~+1300
o
C1
o
C
-4
o
F~+2000
o
F 1
o
F +3% of rdg +3dgts
Sensor: Type K Thermocouple
Input Protection: 0.5A/250V Fuse.
Diode Test
Test current: 1mA typical
Open circuit voltage: 2.8V dc typical
Overload protection: 250V dc or ac rms.
Audible continuity
Audible threshold: Less than50:Test current: <0.3mA
Overload protection: 250V dc or ac rms.
OPERATION
WARNING: Risk of electrocution. High-voltage
circuits, both AC and DC, are very dangerous
and should be measured with great care.
If “1” appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
NOTE:On some low AC and DC voltage ranges, with the test leads
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not connected to a device, the display may show a random,
changing reading. This is normal and is caused by the high-input
sensitivity. The reading will stabilize and give a proper measurement
when connected to a circuit.
DATA HOLD BUTTON
The Data Hold function allows the meter to "freeze" a measurement
for later reference.
1. Press the DATA HOLD button to “freeze” the reading on the
indicator. The indicators “HOLD” will be appear in the display.
2. Press the DATA HOLD button to return to normal operation.
BACK LIGHT BUTTON
The BACK LIGHT BUTTON is used to turn the back light on Only. To
extend the battery life, The back light will be turned off automatically
within around 3 seconds
ഒ
/
ഘ
BUTTON
The ഒ/ഘButton is used to select ഒor ഘfunction when making
temperature measurement. To set the rotary switch at TEMP position
and “ഒ”is being displayed, the LCD display will show temperature for
ഒ. To push the ഒ/ ഘSWITCH ,
w temperature for ഒ. To push the ഒ/ ഘSWITCH , “ ഘ” will be
displayed and at the same time the LCD display will show temperature
for ഘ. To push again ,it will show for ഒ.
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the
circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.
1. Set the function switch to the V DC position (“mV” will appear in
the display).
2. Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive (V) jack.
3. Touch the test probe tips to the circuit under test. Be sure to
observe the correct polarity (red lead to positive, black lead to
negative).
4. Read the voltage in the display. The display will indicate the
proper decimal point and value. If the polarity is reversed, the
display will show (-) minus before the value.
AC VOLTAGE MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may not be
long enough to contact the live parts inside some 240V outlets
for appliances because the contacts are recessed deep in the
outlets. As a result, the reading may show 0 volts when the outlet
actually has voltage on it. Make sure the probe tips are touching
the metal contacts inside the outlet before assuming that no
voltage is present.
CAUTION: Do not measure AC voltages if a motor on the
circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.
1. Set the function switch to the V AC position.
2. Insert the black test lead banana plug into the negative
(COM) jack and the red test lead banana plug into the
positive (V) jack.
3. Touch the test probe tips to the circuit under test.
4. Read the voltage in the display. The display will indicate
the proper decimal point, value and symbol (AC, V, etc.).
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DC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the 20A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up to 200mA DC, set the function
switch to the mA range and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 20A DC, set the function
switch to the A position and insert the red test lead banana plug
into the 20A jack.
4. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
5. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
6. Apply power to the circuit.
7. Read the current in the display. The display will indicate the
proper decimal point, value.
AC CURRENT MEASUREMENTS
WARNING: To avoid electric shock, do not measure AC current
on any circuit whose voltage exceeds 250V AC.
CAUTION: Do not make current measurements on the 20A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up to 200mA AC, set the function
switch to the mA range and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 20A AC, set the function switch to
the A position and insert the red test lead banana plug into the 20A
jack.
4. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
5. Touch the black test probe tip to the negative side of the circuit.
And touch the red test probe tip to the positive side of the
circuit.
6. Apply power to the circuit.
7. Read the current in the display. The display will indicate
the proper decimal point, value.
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and unplug the
line cords.
1. Set the function switch to the :position.
2. Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive :jack.
3. Touch the test probe tips across the circuit or part under test. It
Is best to disconnect one side of the part under test so the rest
of the circuit will not interfere with the resistance reading.
4. Read the resistance in the display. The display will indicate the
proper decimal point, value
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CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on
circuits or wires that have voltage on them.
1. Set the function switch to the position.
2. Insert the black lead banana plug into the negative (-) jack (COM)
and the red test lead banana plug into the positive (+) jack (˖).
3. Touch the test probe tips to the circuit or wire you wish to check.
4. If the resistance is less than approximately 50˖, the audible
signal will sound. The display will also show the actual resistance.
DIODE TEST
WARNING: To avoid electric shock, do not test any diode that
has voltage on it.
1. Set the function switch to position.
3. Insert the black test lead banana plug into the negative (-) jack
(COM) and the red test lead banana plug into the positive (+)
jack (˖).
4. Touch the test probe tips to the diode or semiconductor junction
you wish to test. Note the meter reading
5. Reverse the probe polarity by switching probe position. Note this
reading.
6. The diode or junction can be evaluated as follows:
A. If one reading shows a value and the other reading shows “1”,
the diode is good.
B. If both readings show “1”, the device is open.
C. If both readings are very small or 0, the device is shorted.
NOTE: The value indicated in the display during the diode check is
the forward voltage.
FREQUENCY MEASUREMENT
1. Set the function switch to the 20KHz position.
2. Insert the black test lead banana plug into the negative (-) jack
(COM) and the red test lead banana plug into the positive (+)
jack (F).
3. Touch the test probe tips to the circuit under test.
4. Read the frequency in the display. The digital reading will
indicate the proper decimal point, value.
CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
capacitance measurements. Remove the batteries and unplug
the line cords.
1. Set the function switch to the CAP position.
2. Insert the black test lead banana plug into the negative (-) jack
(COM) and the red test lead banana plug into the positive (+) jack
(CAP).
3. Touch the test leads to the capacitor to be tested. The
display will indicate the proper decimal point, value
TEMPERATURE MEASUREMENTS
WARNING: To avoid electric shock, disconnect both test probes
from any source of voltage before making a temperature
measurement.
1. If you wish to measure temperature in oF, set the function switch to
the oF range. If you wish to measure temperature in oC, set the
function switch to the oC range.
2. Insert the Temperature Probe into the negative (-) jack (COM) and
the positive (+) jack (Temperature), making sure to observe the
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3. Touch the Temperature Probe head to the part whose temperature
you wish to measure. Keep the probe touching the part under test
until the reading stabilizes (about 30 seconds).
4. Read the temperature in the display. The digital reading will
indicate the proper decimal point and value.
WARNING: To avoid electric shock, be sure the thermocouple has
been removed before changing to another measurement function.
REPLACING THE BATTERY
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the battery door.
1. When the batteries become exhausted or drop below the
operating voltage, “BAT” will appear in the right-hand side of the
LCD display. The battery should be replaced.
2. Follow instructions for installing battery. See the Battery
Installation section of this manual.
3. Dispose of the old battery properly.
WARNING: To avoid electric shock, do not operate your meter
until the battery door is in place and fastened securely.
BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the battery door.
1. Disconnect the test leads from the meter.
2. Open the battery door by loosening the screw using a Phillips
head screwdriver.
3. Insert the battery into battery holder, observing the correct
polarity.
4. Put the battery door back in place. Secure with the one screw.
WARNING: To avoid electric shock, do not operate the meter
until the battery door is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and
battery to make sure that they are still good and that they are
properly inserted.
REPLACING THE FUSES
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the back cover
1. Disconnect the test leads from the meter and any item under test.
2. Open the back cover by loosening the screw on the back cover
using a Phillips head screwdriver.
3. Remove the old fuse from its holder by gently pulling it out.
4. Install the new fuse into the holder.
5. Always use a fuse of the proper size and value (0.2A/250V fast
blow for the 200mA range, 20A/250V fast blow for the 10A range).
6. Put the back cover. Insert the screw and tighten it securely.
WARNING: To avoid electric shock, do not operate your meter until
the fuse door is in place and fastened securely.