Servomex NanoTrace DF-760E, Instruction Manual

Page: 85 / 182

User Interface DF-760E 81
A relay is available on the Oxygen Output Setup Screen (see page 97) to signal that a span
or zero calibration is taking place, and the analog output signal can also be frozen or
allowed to update during the calibration process.
7.6.2.4.2 Do An AutoSpan Check
Figure 71: Oxygen AutoSpan Check
As opposed to the Manual Span mode, in the AutoSpan mode, whether check or recal, the
analyzer takes complete control of the process. In the span check mode a complete re-
calibration does not take place. Rather the final span reading is simply compared to the
previous reading to see if the two values are within the user specified percentage set on the
Check/Adjust Span Screen in the
Check Limit
field. See page 79 for additional
information.
After the span gas bottle is attached to the oxygen span inlet on the rear of the analyzer, the
gas value is entered in the Check/Adj Span screen as shown on page 79.
Similarly, the
Span GSF
value, if needed is entered in the Span GSF screen as described
on page 78.
The
TimeOut
is set in the AutoSpan Setup screen as described on page 82.
A relay is available on the Oxygen Output Setup Screen (see page 97) to signal that a span
or zero calibration is taking place, and the analog output signal can also be frozen or
allowed to update during the calibration process.
7.6.2.4.3 Do An AutoSpan Recal
Like the AutoSpan check process, the AutoSpan Recal process is also fully automated.
After the span gas bottle is attached to the oxygen span inlet on the rear of the analyzer, the
Span Gas
value is entered in the Check/Adj Span screen as shown on page 79.
Similarly, the
Span GSF
value, if needed is entered in the Span GSF screen as described
on page 78.
The
TimeOut
is set in the AutoSpan Setup screen as described on page 82.