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54 Configuration, Startup and Operation
S
ection 3: Configuration, Startup and Operation 6888Xi Advanced Electronics Instruction Manual
December 2012 PN 51-6888Xi
6. Press the RIGHT arrow key to edit the gas value.
7. Use the stylus on the screen keypad to enter the new gas value then press ENTER when finished.
8. Use the stylus on the screen to select SEND to update the 6888Xi.
9. From the CALIBRATION menu, select PURGE TIME.
10. Press the RIGHT arrow key to edit the gas value.
11. Use the stylus on the screen to enter the new gas value then press ENTER when finished.
12. Use the stylus on the screen to select SEND to update the 6888Xi.
3.7.3 Output Tracking During Calibration
Use a Field Communicator or the 6888Xi to set how the analog output value will function during
calibration.
A 6888Xi shipped from the factory has the output tracking set to No, i.e. the analog output will
hold the last value during the calibration cycle. This same process must be performed any time
an I/O Board is replaced.
Setting Output Tracking Using the 6888Xi Keypad/Display
1. Press the MENU button repeatedly until the IOB1 Probe 1 menu displays.
2. From the main menu, select DETAILED SETUP then press ENTER.
3. From the DETAILED SETUP menu, select CALIBRATION then press ENTER.
4. From the CALIBRATION menu, select AO TRACK then press ENTER.
5. Press the RIGHT arrow key to edit the value.
No – The analog output will hold the last value during calibration
Yes – The analog output will track the actual measurement during calibration
Use the UP and DOWN arrow keys to change the value from NO to YES or YES to NO. Press
ENTER to save the new value. Press the LEFT arrow key to return to the CALIBRATION menu.
6. Press the EXIT key to return to the main menu.
7. Repeat steps 1 through 6 for PROBE 2 if configured for dual channel.
Setting Output Tracking Using Field Communicator in Manual Configure Mode
1. Use the 375/475 Field Communicator to access the main HART menu.
2. From the main menu, select CONFIGURE.
3. From the CONFIGURE menu, select MANUAL SETUP.
4. From the MANUAL SETUP menu, select CALIBRATION.
5. From the CALIBRATION menu, select ANALOG OUTPUT TRACK.
6. Press the RIGHT arrow key to change the value from NO to YES or YES to NO.
No – The analog output will hold the last value during calibration
Yes – The analog output will track the actual measurement during calibration
7. Use the stylus on the screen to press ENTER when finished.
8. Use the stylus on the screen to select SEND to update the 6888Xi.
3.7.4 Tolerance Check
Use a Field Communicator or the 6888Xi to set whether or not the measured calibration gas value
is validated against the programmed value. If configured Yes, the 6888Xi will create an alarm if the
measured value varies more than ±10% from the programmed value. Also, when configured Yes,
the 6888 must be calibrated using calibration gas 1 first then calibration gas 2 second and the gas
values must be set properly.
When using the 6888Xi with an SPS4001B or IMPS the test gas values for Gas 1 and Gas 2 corre-