Amprobe ac68C Руководство пользователя - Страница 7

Просмотреть онлайн или скачать pdf Руководство пользователя для Мультиметр Amprobe ac68C. Amprobe ac68C 14 страниц. True rms ac/dc clamp multimeter

Peak Hold Button: Toggles on and off. Captures the maximum

peak value of a current or voltage surge (motor start-up). "PEAK"

is shown on LCD.

Data Hold Button: Toggles on and off. Holds reading for all

functions and ranges. Always release HOLD before taking a new

measurement. "HOLD" is shown on LCD.

DCA ZERO Button: Push this button to zero the display before

measuring DC current.

Input Terminals: Always connect black test lead (negative) to

black COM input jack and red test lead to red "VΩ" input jack for

voltage, frequency, resistance, continuity, and diode

measurements

Measuring Procedures

General

Make sure that the selected function and range are

suitable for the measurement to be taken.

If the measured current is higher than the selected range

for a longer period of time, overheating may occur,

compromising the safety and operation of inner circuits.

Do not measure currents on high voltage conductors

(> 600 V) to avoid risks of discharge and/or incorrect

readings.

When measuring current, make sure that the test leads are

removed from the meter terminals.

The most accurate current reading will be obtained by

placing the conductor in the center of the jaws (aligned

with the centering marks on the transformer jaws).

DC Current Measurement

Set the function/range selector to the appropriate A F

position (400 or 600 A).

Press the DCA ZERO button to make sure that the display

is zero-reading.

Open spring-loaded clamp by pressing the lever on left

side of meter.

Position clamp around one wire or conductor and release

the clamp lever. Make sure that the clamp is entirely

closed. The clamp must be positioned around only one

conductor. If it is placed around two or more current

carrying conductors, the reading is FALSE.

Read the displayed value. The direction of the current

corresponds to the indication of the pointer on the jaw.

Polarity inversion is indicated by a '-' (minus) symbol on

the display.