Fluke 115С [17/26] True rms multimeters making basic measurements

True-rms Multimeters

Making Basic Measurements

To detect the presence of ac voltage, place the top of the

Meter close to a conductor. The Meter gives an audible as

well as visual indication when voltage is detected. There

are two sensitivity settings. The “Lo” setting can be used

on flush mounted wall sockets, power strips, flush

mounted industrial outlets and various power cords. The

“Hi” setting allows for ac voltage detection on other styles

of recessed power connectors or sockets where the actual

ac voltage is recessed within the connector itself. The

VoltAlert detector works in bare wire applications with

voltages as low as 24 V in the “Hi” setting.

XW WARNING

If there is no indication, voltage could

still be present. Do not rely on the

VoltAlert detector with shielded wire.

Operation may be effected by

differences in socket design,

insulation thickness and type.

Making Low Impedance Capacitance

Measurements

For making capacitance measurements on cables with

ghost voltage, hold qwhile turning on the Meter to

switch the Meter into LoZ, (low input impedance)

Capacitance mode. In this mode, capacitance

measurements will have a lower accuracy and lower

dynamic range. This setting is not saved when the Meter is

turned off or goes into sleep mode.

Testing Diodes

Forward Bias

Single

Beep

Reverse Bias

Shorted

and

Open

Bad Diode Bad Diode

Good Diode Good Diode

edy07f.eps