4.2.
4.2.
4.2.
4.2. 10
10
10
10 DC
DC
DC
DC CURRENT
CURRENT
CURRENT
CURRENT
Range Resolution
Accuracy
400 µ A 0.1 µ A
± (1.2% of rdg+3 digits)
4000 µ A 1 µ A
40mA 0.01mA
400mA 0.1mA
10A 10mA
± (2.0% of rdg+5 digits)
Overload protection: F 10A/250V fuse for A range. F
5 00mA/ 2 50V fuse for µ A and mA
ranges.
Maximum input current: 400mA dc or 400mA ac rms for µ
A
and mA ranges, 10A dc or 10A ac
rms for A ranges.
For measurements>5A, 4 minutes maximum ON to measure
10 minutes OFF.
4.2.1
4.2.1
4.2.1
4.2.1 1
1
1
1 AC
AC
AC
AC CURRENT
CURRENT
CURRENT
CURRENT
Range Resolution
Accuracy
400 µ A 0.1 µ A
± (1.5% of rdg+5 digits)
4000 µ A 1 µ A
40mA 0.01mA
400mA 0.1mA
10A 10mA
± (3.0% of rdg+7 digits)
Overload protection: F 10A/250V fuse for A range.
F 5 00mA/ 2 50V fuse for µ
A
and mA
ranges.
Maximum input current: 400mA dc or 400mA ac rms for µ
A
and mA ranges, 10A dc or 10A ac
rms for A ranges.
Frequency Range: 40Hz-1kHz
Response: Average, calibrated in rms of sine wave
25
5.
5.
5.
5. MAINTENANCE
MAINTENANCE
MAINTENANCE
MAINTENANCE
This section provides basic maintenance information,
including fuse and battery replacement instructions.
Do not attempt to repair or service your Meter unless you are
qualified to do so and have the relevant calibration,
performance test, and service information.
5.1
5.1
5.1
5.1 General
General
General
General Maintenance
Maintenance
Maintenance
Maintenance
To
To
To
To avoid
avoid
avoid
avoid electrical
electrical
electrical
electrical shock
shock
shock
shock or
or
or
or damage
damage
damage
damage to
to
to
to the
the
the
the
meter,
meter,
meter,
meter, do
do
do
do not
not
not
not get
get
get
get water
water
water
water inside
inside
inside
inside the
the
the
the case.
case.
case.
case. Remove
Remove
Remove
Remove
the
the
the
the test
test
test
test leads
leads
leads
leads and
and
and
and any
any
any
any input
input
input
input signals
signals
signals
signals before
before
before
before
opening
opening
opening
opening the
the
the
the case
case
case
case
Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents.
Dirt or moisture in the terminals can affect readings.
To
clean the terminals:
¥ Turn the meter off and remove all test leads.
¥ Shake out any dirt that may be in the terminals.
¥ Soak a new swab with a cleaning and oiling agent (such as
WD-40).
¥ Work the swab around in each terminal. The oiling agent
insulates the terminals from moisture-related contamination.
5.2
5.2
5.2
5.2 B
B
B
B attery
attery
attery
attery and
and
and
and fuse
fuse
fuse
fuse replacement
replacement
replacement
replacement
If the sign “ ” appears on the LCD display, it indicates that
the battery should be replaced. Remove screws on the back
cover and open the case. Replace the exhausted battery with
a new one.
Fuse rarely need replacement and blow almost always as a
result of the operator
’
s error .Open the case as mentioned
above, and then take the PCB assembly out from the
case .Replace the blown fuse with ratings specified.
26
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