AEMC INSTRUMENTS MA193-14-BK (01) PDF Document

The symbols found on the AEMC INSTRUMENTS current probes have the following meanings:

The definitions of Measurement Categories (CAT) are as follows:

CAT IV: Measurement category IV corresponds to measurements taken at the source of low-voltage installations. Example: power feeders, counters and protection devices.

CAT III: Measurement category III corresponds to measurements on building installations. Example: distribution panel, circuit-breakers, machines or fixed industrial devices.

CAT II: Measurement category II corresponds to measurements taken on circuits directly connected to low-voltage installations. Example: power supply to domestic electrical appliances and portable tools.

The protection assured by the current probe can be compromised if it is used in a way that is not recommended by the manufacturer. Follow these precautions before use:

■ Comply with the rated maximum voltage and current, and the measurement category. Do not use the current probe on networks where the voltage or category exceeds those specified.

■ Comply with the conditions of use (e.g. temperature, humidity, altitude, degree of pollution, location).

■ Do not use the current probe if its housing is open, deteriorated, or incorrectly reassembled. Before each use, check the integrity of the insulation of the unit, jaws, clamps, housing, and leads.

■ Do not subject the current probe to water or other liquids.

■ Keep the jaw contacts of the clamp absolutely clean.

■ Use suitable personal protective equipment when hazardous voltages may be accessible in the installation where the measurement is made.

■ Any repairs must be carried out by accredited skilled personnel.

The AEMC INSTRUMENTS MA193-14-BK, a MiniFlex® Model MA193-BK series probe, has the following features:

1. Flexible sensor

2. Sensor opening device

3. Shielded lead

4. Custom 4-pin input connector

The current probes and flexible sensors are used to measure the current flowing in a conductor or bus bar without opening the circuit. They also insulate the user from dangerous voltages in the circuit.

The choice of current probe or sensor to be used depends on the amperage to be measured and the diameter of the cables or size of the bus bar.

■ For three-phase measurements, use the color-coded ID markers to associate a color for each current input to match the phase identifiers on the measured system.

IMPORTANT NOTE: Always connect the probes or sensors with the indicating arrows pointing toward the load.

■ Connect the current probe or sensor to the current terminals of the instrument.

For MR193 and SL261 Probes:

■ MR193: Set the switch to 1mV/A; the ON indicator will light up.

■ SL261: Set the switch to 10mA or 100mA/A; the ON indicator will light up.

■ Connect the probe to the instrument.

■ Adjust the zero by turning the potentiometer with no conductor in the jaws of the clamp.

■ When the measurement is finished, turn the probe switch to OFF.

To use a clamp-style probe:

■ Press the jaw opening lever on the probe to open the jaws.

■ Clamp the probe around the conductor to be tested. For best results, center the conductor in the jaws of the clamp.

To operate the AmpFlex® and MiniFlex® Sensors:

■ AmpFlex®: Press simultaneously on both sides of the opening connector.

■ MiniFlex® (like the AEMC INSTRUMENTS MA193-14-BK): Press the opening device to open the flexible sensor.

■ Clamp the sensor around the conductor to be tested. For best results, center the conductor in the jaws of the clamp.

■ Close the sensor by pushing the moving part into the connector until it clicks.

The measurement ranges specified are for the probes and sensors. In some cases, they may differ from the ranges that can be measured by the instrument with which they are used. Refer to the product user manual supplied with each compatible instrument for complete specifications.

(1) 10 to 6500AAC for Model 8435

(2) 200mA to 10,000A measurement range for the PEL 100 Series.

(3) 12,000A is specified for the PEL 100 Series only.

Battery: 9V Alkaline NEDA 1604A, 6LR61

Battery Life:

MR193 – 100H typical

SL261 – 55H typical

J93 – 70H typical

NOTE: Battery life is twice the typical value when using Lithium batteries.

Environmental Specifications:

Indoor use.

Operating Temperature: 14° to 131°F (-10° to 55°C); 10% to 85% RH

Storage Temperature: -40° to 158°F (-40° to 70°C); 10% to 90% RH

Degree of pollution: 2

Altitude: < 2000 m

Mechanical Specifications:

The safety ratings are as follows:

Protection Index: IP 40 for the probes and IP 30 jaws open, according to IEC 60 529

■ IP 65 for the AmpFlex® according to IEC 60 529

Impact Resistance: IK 04 according to IEC 50102

Drop test: According to IEC 61010-1

Electrical safety: According to IEC 61010-2-032.

Maximum applicable voltage:

AmpFlex®: 1000V CAT III; 600V CAT IV

MiniFlex®: 1000V CAT III; 600V CAT IV

J93: 600V CAT III; 300V CAT IV

MN93/MN193: 600V CAT III; 300V CAT IV

MR193: 600V CAT III; 300V CAT IV

SL261: 600V CAT III

SR193: 1000V CAT III; 600V CAT IV

CAUTION: Risk of electric shock. Disconnect the instrument from any source of electricity before cleaning.

■ Use a soft cloth, dampened with soapy water. Rinse with a damp cloth and dry rapidly with a dry cloth.

■ Do not use alcohol, solvents, or hydrocarbons.

■ Do not splash water directly on the instrument.

Follow these steps to replace the battery in the Model MR193:

■ Disconnect the MR193 completely and turn the rotary switch to OFF.

■ Use a screwdriver to unscrew the screws and remove the battery compartment cover on the backside of the unit.

■ Withdraw the battery from its compartment.

■ Disconnect the old battery without pulling on the wires and replace with a new one, observing the polarity.

■ Put the battery into its compartment.

■ Put the cover back in place and screw the screws back in.

Follow these steps to replace the battery in the Model SL261:

■ Disconnect the SL261 completely and turn the rotary switch to OFF.

■ Unscrew the battery compartment screw and pull off the battery compartment cover.

■ Replace the battery with a new one, observing the polarity.

■ Put the cover back in place and screw the screw back in.

Follow these steps to replace the battery in the Model J93:

■ Insert a tool, not more than 3mm in diameter, in the hole in the battery compartment cover.

■ Push to unlock the battery compartment cover, then slide it off.

■ Remove it completely by hand.

■ Remove the battery and the shim from the compartment.

■ Place the new battery in the compartment with the polarity as indicated on the label. Then replace the shim.

■ Put the battery compartment cover back in the slide and push it in until you hear a click.

Used batteries must not be treated as ordinary household waste. Recycle them appropriately.