Advertisement
OPERATION
Making Measurements with the AC Current Probe Model MN170
• Connect the current probe MN170 to the AC current range on your DMM or other current measuring
instrument. The AC Current Probe MN170 has a ratio of 100:1. This means that for 75A AC in a
conductor around which the probe is clamped, 750mA AC will come out of the probe leads to your DMM
or instrument. The output is 10mA AC/A AC. Select the range on your DMM or instrument which
corresponds best to the measured current. If the current magnitude is unknown, start with the highest
range first and 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 100 to obtain the measured current (e.g.,
60mA reading = 60 x 100 = 6,000mA or 6A).
• 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 a 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. If the instrument is returned for calibration, we need to know if you
want a standard calibration, or a calibration traceable to N.I.S.T. (includes calibration certificate plus
recorded calibration data).
Chauvin Arnoux
15 Faraday Drive • Dover, NH 03820 USA
Tel:
Fax:
repair@aemc.com
(Or contact your authorized distributor)
Costs for repair, standard calibration, and calibration traceable to N.I.S.T. are available.
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 call our technical hotline:
(800) 343-1391 • (508) 698-2115 • Fax (508) 698-2118
Chauvin Arnoux
techsupport@aemc.com
®
, Inc. d.b.a. AEMC
(800) 945-2362 (Ext. 360), (603) 749-6434 (Ext. 360)
(603) 742-2346 or (603) 749-6309
®
, Inc. d.b.a. AEMC
®
Instruments
®
Instruments
99-MAN 100025.v3 07/04
Advertisement
