Dawson Tools DDM350 Manual do utilizador - Página 6

Procurar online ou descarregar pdf Manual do utilizador para Multímetro Dawson Tools DDM350. Dawson Tools DDM350 12 páginas.

Imprimir página

1. Ncv (Non-Contact Voltage)

Using the Meter

Preparation

• Select a function and a range for the item to be

measured using the rotary switch and "RAN" button if

necessary. In manual range if the range to be measured

is unknown, start with the highest range.

• In manual range, "OL" is displayed when overload

occurs. Choose a higher range.

• To perform measurement, first connect the test lead to

common (COM) input then connect the probe tip of the

Meter to the circuit to be tested.

• If the battery voltage is less than 2.4V,"

Please change the batteries.

DC/AC Voltage Measurement

Warning

Use caution when measureing high voltage circuits

to avoid electrical shock and injury. do not test

voltages higher than dc/ac 600v.

•

Make sure the probe cap is screwed on if making CAT III

or higher measurements.

• Insert the black test lead or lead with test clip in the

"COM" jack.

• Set the rotary switch to the "V

• Press the "FUNC" button to switch between DC and AC

measurements. Manual range can be selected by

pressing the "RAN" button. Hold "RAN" to go back to

Auto range.

• Connect the probe tip of the meter and tip of the test lead

(or test clip) across the voltage source or load.

• Read the measurement on the display. The polarity of

the meter's "+" probe will be indicated.

"is displayed.

"position.

NOTE:

At small voltage ranges the meter may show unsteady

readings when test leads are not connected to the circuit,

this is normal because of the sensitivity of the meter.

When the meter is connected to the circuit, true readings

will be displayed.

DC/AC Current Measurement