3M CTM051 Manual do utilizador - Página 10

Procurar online ou descarregar pdf Manual do utilizador para Instrumentos de medição 3M CTM051. 3M CTM051 17 páginas. Ground pro ground integrity meter

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Using Reference with Voltage

Measurements

Using Reference with

Impedance Measurements

The Reference function

helps to set limits at which

an audio alarm sounds to

indicate that the measured

impedance is below the

specified limit. Unlike a

regular multimeter, the 3M

Ground Pro Ground Integrity

Meter allows you to specify

an exact impedance value

at which the instrument will

provide an audio indication.

In Impedance mode, depress

the Ref. button. You should

see a screen similar to the

one on the right with the REF indicator on. The top line of the display

shows the current impedance value (in this example it is an open circuit)

and the bottom line shows the reference level. Adjust the reference level by

using the Up and Down arrow buttons. Now when the impedance is below

the reference value, you should hear a beep. The reference value is set for

a particular range - you may need to readjust it for a different range. The

reference value will be saved in the internal non-volatile memory.

™

REF

O hm s

R ef

Normal

measurements

screen

Impedance

in Ohms

Threshold