Instrument Functions; Buttons And Keys - AEMC 6422 User Manual

1.5 Instrument Functions

The Models 6422 and 6424 are battery-powered portable measuring instruments
with LCD displays.
These instruments check the safety of electrical installations. They can be used
to test a new installation before it is powered up. They can also check an existing
installation (after it has been disconnected) or diagnose a malfunction in an
installation.
Ground resistance measurement (with three rods)
Voltage measurement
Resistance measurement
Average of ground measurements at 52, 62, and 72%
R over limit detection
H
R over limit detection
E
Stray or foreign voltage on U
AC current measurement with current clamp
(optional)

1.6 Buttons and Keys

Both models:
Buttons
TEST
TEST
+
Ground Tester Models 6422/6424
Function
SE
Long press (>2 seconds) turns instrument ON.
Second long press turns instrument OFF.
Short press starts ground measurements in automatic mode
(§2.3.3).
Long press starts ground measurements in permanent mode.
Pressing TEST during a measurement stops the
measurement (§2.3.5).
At the end of the measurement, pressing TEST exits the frozen
measurement display.
Pressing and TEST simultaneously for >5 seconds while
turning ON the instrument changes the names of the H, S, E
terminals to C, P, X (§2.3.2).
detection
Function
6422 6424
 
 
 
 
 
 
 
 
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