RC Systems ViewSmart 1600+, Руководство по эксплуатации

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UM-1097
Revision B 77
5.2 Menu Settings for Calibration
5.2.1 Local Cal
Local Cal is a setting available for both the Analog Input and Bridge Input options, and is configurable in
the channel’s Data From Menu.
There are three choices Board Default, On, and Off. With the Analog Input option used for both the Analog
and Bridge input boards, Board Default automatically turns the local calibration feature On for the Bridge
input and Off for the Analog Input. If there is a need to calibrate a channel locally and the board default is
Off it can be manually changed.
ViewSmart 1600+ Cal Mode features allow pushbutton calibration of zero and span values. This feature
should be utilized only when there are no other zero/span controls within the monitoring system since it
is inappropriate to calibrate a signal at more than one point. Therefore, if calibration is to be performed
at another transmitter or monitoring device, the ViewSmart 1600+ Cal Mode feature should not be used.
The Calibration Menu allows entering the correct Cal Zero & Cal Span set-point values needed to calibrate
the sensor. These are entered in the same engineering units as input range.
Cal Purge Time Found in the channel setting menu, Cal Purge Time is a setting that can be adjusted up to
5 minutes. This setting is used to provide sufficient time for the calibration gas to purge from the detector
and reading to return to normal levels prior to re-enabling outputs and alarm settings.