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OPERATION
Please make sure that you have already read and fully understand the WARNING section on page 1.
Making Measurements with the AC Current Probe Model MD305
Connect the black and red terminals to the Amper
instrument. Select the appropriate current range (2A AC range). Clamp the probe around the conductor
to be tested with the arrow pointed tow ard the load. If the reading is less than 200mA, select the low er
range until you obtain the best resolu tion. Read the v alue display on t he DMM and multiply it by the
probe ratio (1000/1). (If reading = 0.459A, the current flowing through the probe is 0.459A x 1000 = 459A
AC).
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 w ith a meter, it is important to select the r ange that prov ides the best
resolution. Failure to do this may result in measurement errors.
Make sure that probe jaw mating surfaces are fr ee of dust and contamination. Contaminants cause air
gaps between the jaw s, increasing t he phase shift between primary and sec ondary. It is v ery critical for
power measurement.
MAINTENANCE:
Warning
For maintenance use only original 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 inst rument, do not get w ater or other foreign agents into
the probe.
Cleaning
To ensure optimum performanc e, 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 jaw s, use v ery 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 Serv ice Cent er for a Customer Serv ice Author ization number (CSA#). This
ensure that when your instrument arrives, it will be tracked and processed promptly. Please write the CSA#
on the outside of the shipping container.
(Or contact your authorized distributor)
NOTE: All customers must obtain a CSA# before returning any instrument.
LIMITED WARRANTY
The current probe is w arranted to the owner for a period of one y ear from the dat e of original purchase
against defects in manufacture. This
distributor from whom it was purchased. This warranty is void if the unit has been tampered w ith, abused
or if the defect is related to service not performed by AEMC
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.
e AC range of y our DMM or current measuring
limited w arranty is giv en by AEMC
®
®
Instruments, not by
Instruments.
99-MAN 100120.v7 07/13
will
the
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