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Quick user guide ΩMegaSafe EP 4/EP 4Ex
brief
> 2 s
brief
Polarity reversal for standard
measurement:
Changes the flow direction
of the measuring current. This
is indicated by the “+“ or “-“
symbol on the display.
For earth resistance tests con-
ducted with direct voltage, the
“+“ and “-“ values must be
determined in order to detect
erroneous results in the event
of differences.
Automatic measurement:
Brief for Lo-
Ω
measurement
(10
Ω
) with a measuring cur-
rent of 200 mA.
Switch on automatic:
“AuTo“ and “RdY“ are displayed.
Measuring:
By pressing the button two
measured values are stored.
The flow direction of the
measuring current is changed
automatically. This is indicated
by the “+“ or “-“ symbol on the
display.
Querying of stored minimum
“
+
“
and
“
-
“
values:
After an automatic measure-
ment the lowest resistance
values measured is shown on
the display. To compare the “+“
and “-“ measured value, press
the
+/-
key repeatedly.
Refer to the operating instruc-
tions if the values deviate from
one another significantly.
Function
Key Activation
Signals:
Acoustic w red LED for interference voltage
from 15 V to 400 V (voltage is displayed in V)
Lo-
Ω
-LED for measurements of 200 mA
Acoustic signal for continuity <1 Ω while pressing
the button
brief
+/-
+/-
+/-
