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OPERATION
Making Measurements with the AC Current Probe Model MN185
•
Connect the terminals to the 200mA range of your DMM or instrument. The MN185 has a ratio of 1000:1.
This means that for 100A AC in the conductor around which the probe is clamped, 100mA AC will come out
of the probe leads to your DMM or instrument. The output is 1mA AC per Amp. 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 (200mA 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 1000 to obtain the
measured current (e.g., 59mA reading: 59 x 1000 = 59,000mA or 59A).
•
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.
(Or cont
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:
LIMITED WARRANTY
The current probe is warranted to the owner for a period of two years from the date of original purchase
against defects in manufacture. This limited warranty is given by AEMC
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
Full warranty coverage and product registration is available on our website at:
Please print the online Warranty Coverage Information for your records.
uality Products Online at:
®
Instruments.
GlobalTestSupply
www.
®
Instruments, not by the distributor
99-MAN 100008.v13 03/19
.com
sales@GlobalTestSupp
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