Standard Zero/Span Calibration Selection Menu - MSA Ultima X Series Installation & Maintenance Instructions Manual

Calibration gas reminder screen
Once the device has performed a successful Zero function and stored
the calibration information, it returns a calibration OK message. This
causes a series of calibration closure messages to appear. The first
closure message is a reminder to disconnect any calibration gases from
the device. See FIGURE D-19 for a sample view of this message
screen. The user can abort this screen, but the only affect at this time
would be that the last information screen will not display.
Loop control reminder message
The final information screen following a calibration procedure is a
reminder to return the loop to automatic control. See FIGURE D-20 for
a sample of this screen.
Standard Calibration Procedures

Standard Zero/Span Calibration Selection Menu

Select Sensor Calibration from the Sensor Trim Menu
Sensor calibration or "trim" functions are available from several
locations in the menu structure. See FIGURE D-6 for a view of this
selection menu.
First warning screen
Once the sensor calibration feature is selected, a warning message
displays to indicate that the 4-20 mA output should be disabled from
any automatic control loop to prevent false action during calibration.
The user must acknowledge this screen to continue. See section
FIGURE D-7 for a view of this warning screen. Optionally, the user may
abort the process at this screen.
Second warning screen
After acknowledgement of the control loop message, a second warning
message displays indicating that sensor calibration is changed. The
user can abort the procedure at this time or acknowledge the screen to
proceed. See FIGURE D-8 for a view of this screen.
Standard Calibration function select screen
Upon acknowledgement of the calibration change warning screen, the
user is presented with a calibration function selection screen. To
perform a standard Zero/Span of the sensor, select the "Zero/Span"
function and acknowledge the screen. See FIGURE D-9 for a view of
this screen.
D-37