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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
5-8
11. Select START CAL/STEP CAL to start applying the COe High Gas. The
time to apply the test gas is specified by the Gas Time.
12. The calibration status should automatically change to FlowCOeHI and
then ReadCOeHigh for a period of time. During this period, if an attempt
is made to go to the next calibration step by pressing OK and selecting
START CAL/STEP CAL, you will be prompted with Operator step
command is not accepted at this time.
13. When ready, Calibration Status will stop at STOP GAS, switch off the
COe High Gas. Press OK when ready. Select START CAL/STEP CAL
to start purging gas. The time to purge gas is specified by the Purge
time.
14. When the Purge step is complete, the Calibration Status will be at IDLE.
A Calibration Failed alarm will be set if the calibration has failed.
15. When calibration is complete. Select Exit Cal to exit the calibration
method.
Manual O
2
and COe Calibration using the Field Communicator - HART
To perform a manual O
2
and COe calibration using the Field Communicator or
AMS, use the following procedure. If necessary, refer to Section 6, Field
Communicator, for the HART menu tree.
NOTE
To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.
To return to a preceding menu, press the left arrow key.
1. Select DIAG/SERVICE from DEVICE SETUP menu.
2. Select CALIBRATION from the DIAG/SERVICE menu.
3. Select CAL CONTROL from the CALIBRATION menu.
4. Select CAL METHODS from the CAL CONTROL menu.
5. From the CAL METHODS menu, select the type of calibration desired:
O2 and COe Calibration.
6. In the first Calibration screen, a Loop should be removed from
automatic control warning appears. Remove the Hazardous Area
OCX 8800 from any automatic control loops to avoid a potentially
dangerous operating condition and press OK.
7. The main Calibration screen should look like the following. Press OK to
continue.
OCX: TAG NAME
STEP: Idle
TIME REMAIN: 0s
O2: 0.4 %, 85.95mV
COe: 0.20 ppm
OK/NEXT to Select
ABORT/CANCEL to Exit