AEMC instruments JM852 Panduan Pengguna - Halaman 4

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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 JM852

• Connect the black and red terminals to the Voltage AC range of your DMM or voltage measuring

instrument. Select the appropriate voltage range (2V AC). Clamp the probe around the conductor to be

tested. If the reading is less than 200 mV, select the lower range until you obtain the best resolution.

Read the value display on the DMM and multiply it by the probe ratio (3000/1 = 3000). (If reading =

0.592V AC, the current flowing through the probe is 0.592 x 3000 = 1776A).

• For best accuracy: carefully center the conductor inside the probe jaw, 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 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.

Chauvin Arnoux

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

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

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.

, Inc. d.b.a. AEMC

Instruments

Instruments.

Instruments, not by the

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