99-MAN 100086 v9 07/13
OPERATION
Making Measurements with the AC Current Probe Model MN114
Connect the black (S2) and red (S1) terminals to the 2 V range of your DMM or instrument. The MN114
has a ratio of 10:1. This means that for 10A AC in the conductor around which the probe is clamped, 1V
AC will come out of the probe leads to your DMM or instrument. The output is 100mV AC per Amp AC.
Select the range on your DMM or instrument which best corresponds to the measured current. If the
magnitude is unknown, start with the highest range (2V AC) then work down until the appropriate range
and resolution is reached. Clamp the probe around the conductor. Take the reading on the meter and
multiply it by 10 to obtain the measured current.
(e.g., 59mV reading: 59 x 10 = 590mA or 0.59A).
Meter Reading
10mV 120mV 1200mV
Measured Value
100mA = 0.1A
1200mA = 1.2A
12000mA = 12.0A
For best accuracy, avoid if possible, the proximity of other conductors which may create noise.
Tips for Making Precise Measurements
When using a current probe with a meter, it is important to select the range that provides the best
resolution. Failure to do this may result in measurement errors.
Make sure that probe jaw mating surfaces are free of dust and contamination. Contaminants cause air
gaps between the jaws, increasing the phase shift between primary and secondary. It is very critical for
power measurement.
MAINTENANCE
Warning:
For maintenance use only original factory replacement parts.
To avoid electrical shock, do not attempt to perform any servicing unless you are qualified to do so.
To avoid electrical shock and/or damage to the instrument, do not get water or other foreign agents into
the probe.
Cleaning:
To ensure optimum performance, it is important to keep the probe jaw mating surfaces clean at
all times. Failure to do so may result in error in readings. To clean the probe jaws, use very fine sand paper
(fine 600) to avoid scratching the jaw, then gently clean with a soft oiled cloth.
REPAIR AND CALIBRATION
You must contact our Service Center for a Customer Service Authorization number (CSA#). This will
ensure that when your instrument arrives, it will be tracked and processed promptly. Please write the CSA#
on the outside of the shipping container.
Chauvin Arnoux
®
, Inc. d.b.a. AEMC
®
Instruments
15 Faraday Drive
Dover, NH 03820 USA
(800) 945-2362 (Ext. 360) • (603) 749-6434 (Ext. 360) • [email protected]
(Or contact your authorized distributor)
NOTE: All customers must obtain a CSA# before returning any instrument.
TECHNICAL AND SALES ASSISTANCE
If you are experiencing any technical problems, or require any assistance with the proper use or
application of this instrument, please contact our technical hotline:
(800) 343-1391 • (508) 698-2115 • [email protected]
LIMITED WARRANTY
The current probe is warranted to the owner for a period of one year from the date of original purchase
against defects in manufacture. This limited warranty is given by AEMC
®
Instruments, not by the
distributor from whom it was purchased. This warranty is void if the unit has been tampered with, abused
or if the defect is related to service not performed by AEMC
®
Instruments.
Full warranty coverage and product registration is available on our website at:
www.aemc.com/warranty.html.
Please print the online Warranty Coverage Information for your records.
AC Current Probe
Model MN114
User Manual
DESCRIPTION
The MN114 (Catalog #2110.71) is a high accuracy voltage output current probe for tight areas such
as crowded wiring. Extends DMM AC measurements to 10A AC. The Model MN114 offers a 5 ft lead
with safety 4mm banana plug.
WARNING
These safety warnings are provided to ensure the safety of personnel and proper operation of the
instrument.
• Read the instruction manual completely and follow all the safety information before attempting
to use or service this instrument.
• Use caution on any circuit: Potentially high voltages and currents may be present and may
pose a shock hazard.
• Read the Safety Specifications section prior to using the current probe. Never exceed the
maximum voltage ratings given.
• Safety is the responsibility of the operator.
• ALWAYS connect the current probe to the display device before clamping the probe onto the
sample being tested.
• ALWAYS inspect the instrument, probe, probe cable, and output terminals prior to use.
Replace any defective parts immediately.
• NEVER use the current probe on electrical conductors rated above 250V. Use extreme caution
when clamping around bare conductors or bus bars.
INTERNATIONAL ELECTRICAL SYMBOLS
This symbol signifies that the current probe is protected by double or reinforced insulation. Use
only factory specified replacement parts when servicing the instrument.
This symbol signifies CAUTION! and requests that the user refer to the user manual before
using the instrument.
This is a type A current sensor. This symbol signifies that application around and removal from
HAZARDOUS LIVE conductors is permitted.
RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with the packing list. Notify
your distributor of any missing items. If the equipment appears to be damaged, file a claim immediately
with the carrier and notify your distributor at once, giving a detailed description of any damage.
INSTRUMENT COMPATIBILITY
The Model MN114 is compatible with any voltmeter, multimeter, or other voltage measuring instruments
with an input impedance greater than 100K
. To achieve the stated accuracy, use the MN114 with a
voltmeter having an accuracy of 0.75% or better.
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