PrimaX® IR
28
Maintenance
GB
5.3
HART Information for Troubleshooting
The HART digital signal can provide additional information on the unit’s health and status. Some of the
information includes specific fault, calibration and obscuration status.
All available status bytes are defined in the PrimaX IR HART Specification found on the product CD.
Refer to this document for complete HART command and status definitions. Use the HART digital inter-
face to query the unit to provide additional troubleshooting information.
5.4
Cleaning
The presence of particulate matter, oil films, liquid water, or the residue from water drops on the device
optics can adversely affect its performance. The environmental guard is designed to prevent solids or
liquids from reaching the monitor's optical system. Heating elements are also incorporated into the unit
to prevent water condensation. Under severe conditions, however, some material may collect on these
surfaces and it may be necessary to occasionally check and clean the windows.
Calibration cap span fails.
Pull the cap off and evacuate gas from the calibration cap.
Retry the calibration procedure and verify the Zero calibra-
tion was successful. If Zero calibration returns “
” and the
Span calibration fails, verify adequate span gas and flow.
Verify that the Span gas is applied within the 30 second
window.
Check the o-ring integrity to ensure a good seal between
the sensor and the calibration cap.
Check the cap for damage.
Calibration cap rapidly flashes all icons
during startup
The calibration cap battery is nearing the end of its useful
life. The calibration cap will continue to operate until the
battery is consumed.
Known gas concentration response is
incorrect
Calibrate. If calibration fails, remove power and reapply.
Verify span gas flow rate and cylinder accuracy. Verify
environmental guard and/or flow cap are not obstructed.
Verify line load is according to electrical installation chapter
3.2.Verify ambient temperature range is appropriate for the
device rating.
One source not flashing
The PrimaX IR is designed to meet all specifications with
only one source. Source status is available through HART
communication. See HART manual for details.
Perform standard calibration.
No further action required.
General Troubleshooting Guide
Indication
Action
