Instruction Manual OilGuard Ex M
22
10241E/2
4.2
Normal operation
After switching on the instrument, it is in normal operation. The current
reading / measuring range is display continuously.
The following displays may also appear (examples):
The display…
Means...
You should then...
***** ppm 1
…that the reading is
outside the valid
measuring range
(measuring range
overrun).
-
...ensure that the
maximum permitted value
is not exceeded
-
...ignore the display if your
process is in an irregular
phase.
***Warming up***
…that the instrument is
in the warm-up phase
the first 10 minutes
after being switched on.
(During this time a limit
exceed is output to the
relays and the OilGuard
data logger.)
-
…wait until the current
reading is displayed
**** Fault ****
...
…that a fault has
occurred.
-
...try to determine the
cause of the fault
(
→
Section 6.1).
Limit
exceeded !
…that a limit has been
exceeded.
…that the photometer is
in the 10-min. warm-up
phase.
(a reading is displayed
alternating)
Table 2: Displays and their meaning.
Pressing the button
q
or
p
displays the currently set measuring range end
values. Other manipulations on the operating unit are not necessary for normal
operation.
