Emerson Rosemount CCO 5500, Reference Manual

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Note
Once you select Output Span , the current value is displayed for one second. The first digit of the
display then defaults to zero; thus you must re-enter the span value for the unit to function correctly.
Fault condition
If a fault condition occurs, you may set the current output of the instrument to one of the
following options:
Procedure
1. Set the output at 0 mA -
ZERO
.
2. Adjust the output to the calculated gas concentration even though a fault condition
exists -
MEAS
.
3. Hold the last selected gas concentration - HOLD .
4. Set the output to full scale (20 mA) - F.S.
Press the arrow keys to select one of these options; when the desired output is displayed,
press ENTER to confirm.
Set mA output
Note
This is set at the factory and should not be altered without due consideration.
From this option, the current levels of the analog output are set up. Press ENTER to select
it, and the instrument prompts you to set the current levels at 0 and 20 mA.
When this is displayed, set the current output to 0 mA as measured with a calibrated
current meter across the analog ouput loop terminals; do not connect anything else to
these terminals when setting up the output.
Use the two arrow keys to adjust the value; the UP arrow takes the current output up, and
the DOWN arrow takes it down. Press ENTER when the correct output is displayed on the
ammeter.
Configuration and startup
Reference Manual 39