Page 86
ST 800 Series HART/DE Option User’s Manual
Revision 5.0
The PILD related non-critical status is show in the table below
Alarm Message
Possible Causes
Recommended Resolution
PILD Block OS
(Optional for DP
Transmitter only
when PILD is
enabled)
One of the impulse
lines is blocked.
Check and clear the impulse lines. Then
disable and enable PILD when the
process and transmitter is in normal
operation.
PILD Block BS
(Optional for DP
Transmitter only
when PILD is
enabled)
The transmitter is
not installed to a
process or the
process is not in
operation.
Ignore the alarm. It's suggested that PILD
be enabled only after the transmitter is
installed and the process is running.
One of the impulse
lines of DP is
blocked and the
other side is open
to atmosphere or
has a constant
pressure.
Check and clear the impulse line(s). Then
disable and enable PILD when the
process and transmitter is in normal
operation.
Both sides of the
impulse lines are
blocked.
Noise in process is
too low.
PILD is not applicable to this specific
situation. It’s suggested to disable PILD.
PILD Blockage
(Optional and
applicable for AP and
GP Transmitter only
when PILD is
enabled)
The transmitter is
not installed to a
process or the
process is not in
operation.
Ignore the alarm. It's suggested that PILD
be enabled only after the transmitter is
installed and the process is running.
The impulse line is
blocked.
Check and clear the impulse line. Then
disable and enable PILD when the
process and transmitter is in normal
operation.
Noise in process is
too low.
PILD is not applicable to this specific
situation. It’s suggested to disable PILD.