Jefferson JEFDCM600A User Manual

Warranty.
This instrument is warranted to be free from defects in material and workmanship for
a period of one year. Any instrument found defective within one year from the delivery
date and returned to the factory with transportation charges prepaid, will be repaired,
adjusted, or replaced at no charge to the original purchaser. This warranty does not
cover expandable items such as battery. If the defect has been caused by a misuse or
abnormal operating condition, the repair will be billed at a nominal cost.
Introduction.
This instrument is a compact 3 5/6 digits true-RMS auto-range digital clamp meter
designed to measure DC and AC voltage, DC and AC current, resistance, continuity,
diode, capacitance, frequency, duty cycle and temperature. It features non-contact
AC voltage detection, Relative mode, MIN MAX recording mode, data hold, backlight,
low battery indication, automatic power-off, illumination and etc. It is easy to operate
and is a useful test tool.
Safety information.
This meter has been designed according to IEC 61010 concerning electronic measuring
instruments with a measurement category ( CAT III 600V ) and pollution degree 2.
WARNING!
To avoid possible electric shock or personal injury, follow these guidelines:
• Do not use the meter if it is damaged. Before you use the meter, inspect the case.
Particular attention to the insulation surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity.
Replace damaged test leads before you use the meter. Do not use the meter if it operates abnormally.
• Protection may be impaired. When in doubt, have the meter serviced.
• Do not operate the meter where explosive gas, vapour or dust is present.
• Do not apply more than the rated voltage, as marked on the meter, between terminals or between any terminal
and earth ground.
• Before use, verify the meter's operation by measuring a known voltage.
• When servicing the meter, use only specified replacement parts.
• Use caution when working with voltage above 30V ac rms, 42V peak, or 60V dc. Such voltages pose a shock hazard.
• When using the probes, keep your fingers behind the finger guards on the probes.
• When making connections, connect the common test lead before you connect the live test lead. When you disconnect
test leads, disconnect the live test lead first. Remove the test leads from the meter and remove the jaws from any clamped
conductor before you open the battery cover or the case.
• Do not operate the meter with the battery cover or portions of the case removed or loosened.
• To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the
low battery indicator appears. Do not use the meter in a manner not specified by the manufacturer or the safety features
provided by the meter may be impaired.
• Adhere to local and national safety codes. Individual protective equipment must be used to prevent shock and arc blast injury
where hazardous live conductors are exposed.
• To avoid electric shock and personal injury, do not touch any naked conductor with hand or skin; and do not ground yourself
while using this meter.
• Do not use the meter if the meter, a test lead or your hand is wet.
• Do not make current measurement on a circuit which contains voltage higher than 600V.
• Do not hold the Meter anywhere beyond the tactile barrier.
• Remaining endangerment: When an input terminal is connected to dangerous live potential, it is to be noted that this potential
can occur at all other terminals.
• CAT III - Measurement Category III is for measurements performed in the building installation. Examples are measurements
on distribution boards, circuit breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the
fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent
connection to the fixed installation.
• Do not use the meter for measurements within Measurement Category IV.
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USER GUIDE JEFDCM600A
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Jefferson 600A Clamp Meter