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58 Configuration, Startup and Operation
S
ection 3: Configuration, Startup and Operation 6888Xi Advanced Electronics Instruction Manual
December 2012 PN 51-6888Xi
3.7.7 Autocalibration
If autocalibration is desired, the 6888Xi must be used with either an SPS 4001B or IMPS 4000.
The 6888Xi must be properly configured before autocalibration can take place. Refer to the
applicable SPS 4001B or IMPS 4000 instruction manual for details on performing autocalibra-
tion. Refer to this section for details on manual calibration procedures.
A 6888Xi is shipped from the factory without autocalibration configured. This same process
must be performed any time an I/O Board is replaced.
Configuring Autocalibration 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 AUTO CALIBRATION then press ENTER.
4. From the AUTO CALIBRATION menu, select ENABLE AUTO CAL then press ENTER.
5. Press the RIGHT arrow key to edit the value. 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 AUTO 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.
Configuring Autocalibration Using Field Communicator
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 AUTO CALIBRATION.
5. From the AUTO CALIBRATION menu, select the ENABLE AUTOCAL parameter.
6. Press the RIGHT arrow key to edit. Use the stylus on the screen keypad to select YES or NO
then press ENTER when finished.
7. Use the stylus on the screen to select SEND to update the 6888Xi.
3.7.8 Calibration Recommended
The 6888Xi can be configured whether or not to annunciate a calibration recommended alarm.
This alarm advises the user that the calibration is out of date and should be recalibrated.
A 6888Xi is shipped from the factory with the calibration recommended alarm enabled. This
same process must be performed any time an I/O Board is replaced.
Configuring Calibration Recommended 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 CAL RECOMMENDED then press ENTER.
5. Press the RIGHT arrow key to edit the value. 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.