MBW 973-SF6, Operation Manual

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MBW973-SF6_MANUAL_E_V3.1
Data Lines
The first four lines of the display are for numeric representation of the measured data. We refer
to those first four lines as Data Lines. Numeric data lines contain the value to the left, with the
parameter description and units to the right. The displayed parameters and units can be
changed, but after a restart of the instrument, the values will be reset to the stored standard
configuration.
Data Line 1
This line displays the measured Dew/Frost Point.
The unit is °C at atmospheric pressure.
In the standard configuration, instruments equipped
with the SO
2
option show the SO
2
concentration
expressed in ppm
v
. The standard SO
2
configuration
is shown on the second display.
Data Line 2
This line displays the humidity content in either
ppm
v
(parts per million by volume) or ppm
w
(parts
per million by weight). Both units are pressure inde-
pendent.
Data Line 3
This line displays the purity in % Volume SF
6
.
Data Line 4
This line indicates the current pressure of the gas
compartment. The unit is kilo Pascal absolute pres-
sure.
The data lines indicating the measured humidity and SO
2
concentrations as well as
the % Volume SF
6
will only be displayed after completion of the measurement. Dur-
ing the measurement only the current gas pressure of the measured compartment
is indicated.
Fixed Function Keys and Status Line
Without SO
2
Option
With SO
2
Option
The bottom line of the display contains two fixed
function keys. The measurement process is started
by pressing the
Start button. With the Pump button,
pump back of stored gas in the internal cylinder can
be activated manually. These function keys are not
changeable and are always available. Additionally
this line contains the status indication, which indi-
cates the current operation mode. The level indica-
tor of the internal cylinder indicates the current stor-
age capacity. A 973 without the SO
2
option will dis-
play an X next to SO2 to indicate that the meas-
urement of SO
2
concentration is not available.