Emerson Rosemount Oxymitter 4000, Reference Manual, Page: 113 / 198

• From the
O2 CALIBRATE
screen, go to
O2 CAL STATUS
→
CAL-STATE
→
TIME
REMAIN
→
PRESENT O2 .
When
CALSTATE
displays
COMPLETE
, the calibration is finished.
7.8 Automatically calibrate with HART
®
Use the following procedure to specify a time interfal (in hours) at which the transmitter
will be automatically calibrated.
If necessary, use the menu tree in Figure 7-3 for reference.
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.
Procedure
1. From the DEVICE SETUP screen, select
DETAILED SETUP
.
2. From the DETAILED SETUP screen, select
O2 CALIBRATION
.
3. From the O2 CALIBRATION screen, select menu item 6,
CAL MODE
. Set the
CAL
MODE
to
AUTO
.
4. Return to the O2 CALIBRATION screen and select menu item 7,
CAL INTRVL
.
5. At the prompt, input a time interval (in hours) at which you want the automatic
calibration to occur; then press ENTER .
7.9 D/A trim
Use the D/A trim procedure to calibrate the 4-20 mA output signal to a precision mA
measurement device, such as a calibrated digital ammeter. The procedure is interactive
and stored in the Rosemount
™
Oxymitter 4000 software.
Procedure
1. Use the Z pattern key entry to access the LOI menu.
2. Press the Down key twice to access the SYSTEM menu.
3. Press the Down key once to access the Input/Output menu.
4. Select
Analog
and press the Right key to display the Analog submenu.
5. Press the Down key as needed to access
Trim O2 Out
.
6. Press the ENTER key to start the trim procedure. Follow the LOI display prompts to
perform the trim procedure.
Reference Manual HART
®
/AMS
00809-0100-4340 October 2019
Rosemount Oxymitter 4000 113