AEMC instruments 6416, Руководство пользователя

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Clamp-on Ground Resistance Tester Model 6416 25
5.3 DISPLAY EXAMPLE
Figure 5-2 shows a typical display
upon first use, with the device set to
Ω+A . In this example, the measured
current is 30.0 mA and the imped-
ance is 7.9 Ω.
The buzzer is active and the
memory is empty.
NOTE: This display corresponds
to the device in Standard mode.
In Advanced mode, two additional
screens are available (see § 6.1.2.2).
Figure 5-3 shows a display, upon
first use, with the device set to
A . In
this example, the current measured
is 30.0 mA.
The buzzer is active and the
memory is empty.
Figure 5-2
Figure 5-3
5.4 TURNING THE INSTRUMENT ON
With the clamp closed and not clamped around any conductor, set the
rotary switch to a position other than OFF. All icons on the display light for
approximately two seconds, before possible entry of the date and time
(see § 5.2).
During the first few seconds of operation, the clamp automatically adjusts
correction factors to optimize the impedance measurement. This correction
makes it possible to allow for the variations of the measurement head air gap that
may occur in some temperature and humidity conditions.
During this adjustment, the screen displays CAL GAP. If the clamp detects a
problem, it indicates Err CAL when the switch is set to Ω+A. Turn the instrument
OFF, disconnect it from any conductor and make sure the sensor heads are
clean with no obstructions, then turn it back ON.
When this adjustment is done, the clamp displays the screen corresponding to
the switch setting.