Emerson Rosemount OCX8800 Quick Start Manual page 44

Quick Start Guide
The calibration data changes as the calibration proceeds.
9. Press Right when the high O
test gas. Press Right to start the high O
When the purge period expires, the LOI display reverts to the normal
operation display. If the calibration failed, the display will indicate an
alarm condition.
10. Press Right to start combustibles calibration. Turn on the CO test gas
when prompted.
11. Press Right after applying the CO test gas.
The calibration data changes as the calibration proceeds.
12. Press Right when the CO reading is stable.
13. Turn off the CO test gas and press Right to start the CO gas purge.
When the purge period expires, the LOI display reverts to the normal
operation display. If the calibration failed, the display will indicate an
alarm condition.
5.3.2 Calibrate O
F
OUNDATION
Note
To select a menu item, either use the Up and Down arrow keys to scroll to
the menu item and press the Right key or use the number keypad to select
the menu item number. To return to a preceding menu, press the Left key.
Procedure
1. To calibrate from Fieldbus, first set the Transducer Block to Out of
Service Mode (OOS).
2. To set the OOS mode, select Transducer; then select Process,
followed by Out of Service on the Target Mode screen.
3. From the Transducer screen, select Methods.
4. From the Methods screen, select OCX Calibration.
5. From the OCX Calibration screen, select Calibrate O
calibration, select Calibrate Combustibles Sensor for COe calibration,
or select Calibrate Both Sensors if you want to calibrate both sensors.
On the Calibration screen, a
automatic control
6. Remove the device from any automatic control loops to avoid a
potentially dangerous operating condition and press OK.
7. Set the Select Action screen to the following values/settings. From the
Select Action screen, select Update Display to refresh the calibration
status, select Next Calibration Step to continue calibration, select
44
/COe manually using the Field Communicator -
2
™
Fieldbus
reading is stable. Turn off the high O
2
gas purge.
2
Loop should be removed from
warning appears.
February 2020
2
Sensor for O
2 2
Rosemount OCX8800