AC LINE SPLITTER
(X1, X10)
Model ALS-1
ALS- 1
MAX
. 15
A
OIX IX
VOLT CHECK
®
INSTRUMENT S
User Manual
ENGLISH
www.aemc.com
PRODUCT PACKAGING
Shipping Contents:
AC Line Splitter Model ALS-1
Cat. #2121.05
AEMC® INSTRUMENTS
COMPATIBLE PROBES
MN 200 & 300 Series
Clamp-On Meters 200,
400, 500 & 600 Series
MR Series
®
AmpFlex
MiniFlex
Probes
®
Probes
FlexProbe® Probes
OPERATING INSTRUCTIONS
THEORY OF OPERATION
A magnetic eld, proportional to the magnitude of current,
surrounds all current carrying conductors. In an AC circuit the
magnetic eld will induce a current in the jaws of a clamp-on
current probe when the jaws are closed around the conductor.
If both conductors of the circuit are enclosed by the jaws of
the probe the magnetic elds will cancel and no measurement
is possible. Most 120VAC appliances use two conductor
cords which make it difcult to isolate a single conductor for
measurement. The ALS-1 provides temporary separation of
conductors to facilitate measurement of current.
OPERATION
1. Plug the ALS-1 into a grounded type 120V
AC
receptacle. If a grounding type receptacle is not
available, a 2 to 3 wire adapter must be used.
Maintain ground wire integrity to minimize the
possibility of electrical shock.
2. Plug the appliance line cord into the receptacle
end
of the ALS-1 and turn on the appliance.
5
3. Place the jaws of the clamp-on current probe
through the X1 opening
of the ALS-1. The
2
current being drawn by the appliance can then be
read directly from the indicator of the clamp-on
probe.
4. If the magnitude of the reading obtained in step 3
is less than one-tenth of the full scale range of the
clamp-on current probe, and difcult to read, place
the jaws of the probe through the X10 section.
The magnitude of the current drawn by the
3
appliance will be the reading on the current probe
meter divided by ten.
Example:
With the range switch of the clamp-on current probe set
to 6 amps, the meter indicates 5.4 amps, and the jaws
of the probe are through the X10 section of the ALS-1.
The actual current is 0.54 amps (5.4 amps ÷ 10 = 0.54
amps, or 540 mA).
INTERPRETATION OF RESULTS
1. Most appliance manufacturers state the rating of
an appliance on the frame, or housing. The rating
will be stated either in ampers or watts.
2. If the rating is stated in ampers,this gure may be
compared with the reading on the clamp-on current
probe. A reading that is signicantly LOWER then
the manufacturer’s rating may indicate low line
voltage, corroded terminals, or some other fault,
which results in a higher resistance to current.
A reading that is signicantly HIGHER than the
manufacturer’s rating may indicate high line
voltage, or a partial short in the appliance, which
results in a lower resistance to current.
The line voltage may be easily checked by inserting
the test probes of an AC voltmeter into the VOLT
CHECK input jacks
on the ALS-1.
4
3. If the appliance rating is stated in WATTS, then
multiply the reading in current (taken directly from
the clamp-on probe) times the line voltage. The
result will be the power consumption in watts.
Example:
The clamp-on probe indicates that 8.5 amperes is being
drawn by the appliance. The line voltage is measured
and found to be 102V
AC. The power consumption is 867
watts (8.5 amps x 102 volts = 867 watts).
A power consumption which is signicantly higher, or
lower, than the rated power consumption may be due to
the factors given in step 2, for low or high current read-
ings.
ALS-1
VOLT CHECK
XI
XI0
MAX. I5A
3
2
1
4
5
FRONT
BOTTOM
Front and Bottom View of ALS-1
FEATURES
• X10 mode: Increases sensitivity
of clamp-on current probes 10X.
• X1 mode: Direct reading.
• Voltmeter Input Jacks
• Integral Ground Conductor
• 15A 120VAC MAX Rating
3-Prong, Polarized 120VAC
Plug
CAUTION Maintain
-
1
ground wire integrity to
minimize the possibility of
electrical shock.
2
1X Sensitivity Section
3
10X Sensitivity Section
Volt Check Input Jacks
4
- Line voltage may be
measured using probes.
3-Prong, Polarized 120VAC
5
Recptacle
- Plug in appliance here.
04/16
99-MAN-100435 v3
®
Chauvin Arnoux
, Inc. d.b.a. AEMC® Instruments
15 Faraday Drive • Dover, NH 03820 USA
Phone: (603) 749-6434 • Fax: (603) 742-2346
www.aemc.com
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