AEMC instruments MN185 Manual de usuario

AC Current Probe

Model MN185

User Manual

DESCRIPTION

The MN185 (Catalog #100.185) is a high accuracy current probe for tight areas

such as crowded wiring. Extends DMM AC measurements to 120A AC.

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.

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

before using the instrument.

RECEIVING YOUR SHIPMENT

Upon receiving your shipment, make sure that the contents are consistent with

distributor at once, giving a detailed description of any damage.

INSTRUMENT COMPATIBILITY

The Model MN185 is compatible with any ammeter, multimeter, or other current

measuring instruments with an input impedance of less than 5W. To achieve the

stated accuracy, use the MN185 with an ammeter having an accuracy of 0.75%

or better.

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CURRENT PROBE - MN 185 DRAWING

ELECTRICAL SPECIFICATIONS

Current Range:

50mA to 120A AC, continuous

Output Signal:

1mA AC / A AC (120mA @ 120A)

Accuracy:

50mA to 100A: 1% ± 0.01A

(with non-inductive load)

100A to 120A: 1.5% ± 0.01A

Phase Shift*:

from 1 to 100A, 50 to 60Hz

no DC component, no external current

carrying conductor, test sample centered.)

Load impedance 1 .

Overload:

170A continuously

Frequency Range:

Load Impedance:

5 max

Working Voltage:

250V AC

Common Mode Voltage:

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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

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.

MECHANICAL SPECIFICATIONS

Operating Temperature:

Storage Temperature:

Maximum Conductor Size:

Dimensions:

Weight: 5.6 oz (160g)

Colors:

Dark gray handles with red cover

Polycarbonate Material:

Handle: 10% Fiberglass charged

Output:

SAFETY SPECIFICATIONS

Electrical:

and ground

ORDERING INFORMATION

AC Current Probe

MN185................................Cat #100.185

Accessories:

Safety Leads.......................

Lead-Set of 2, 5 ft color-coded (red/black)

.... Cat #5100.07

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99-MAN 100008 V15 01/22

• Make sure that probe jaw mating surfaces are free of dust and contamination.

Contaminants cause air gaps between the jaws, increasing the phase shift

MAINTENANCE

Warning:

• For maintenance use only original factory replacement parts.

• To avoid electrical shock, do not attempt to perform any servicing unless you

• 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

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.

NOTE: All customers must obtain a CSA# before returning any instrument.

TECHNICAL AND SALES ASSISTANCE

the proper use or application of this instrument, please contact our technical

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

This warranty is void if the unit has been tampered with, abused or if the defect is

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