Fault Status - Hach BioTector B3500ul User Manual

8.3.9 Fault Status

This menu gives a short status history of several system devices before a fault is registered. The default 0.0 values indicate that there
are no faults detected for the specific device.
O2 FLOW
BIOTECTOR TEMPERATURE
CO2 ANALYZER FAULT
OZONE GEN FAULT
COOLER FAULT
▪ The O2 FLOW menu consists of 120 entries for the MFC
setpoint value (first column) and MFC flow value (second
column). The entries are sampled at every 1 second intervals. If
a fault is detected, the events are stored in the O2 FLOW fault
archive and are retained even if the fault is acknowledged in
Fault Archive menu. The archive is only over-written if a new
fault is detected.
▪ The BIOTECTOR TEMPERATURE menu consists of 120
readings of the BioTector temperature. The entries are sampled
at every 2 seconds intervals, covering 240 seconds. If a fault is
detected, the events are stored in the BIOTECTOR
TEMPERATURE fault archive and are retained even if the fault
is accepted in Fault Archive menu. The archive is only over-
written if a new fault is detected.
▪ The CO2 ANALYZER FAULT menu consists of 120 readings of
the CO Analyzer. The entries are sampled at every 2 second
2
intervals, covering 240 seconds. If a fault is detected, the events
are stored in the CO2 ANALYZER FAULT archive and are
retained even if the fault is accepted in Fault Archive menu. The
archive is only over-written if a new fault is detected.
▪ The OZONE GENERATOR FAULT menu consists of 120
readings of the current drawn through the OZONE
GENERATOR. If a fault is detected, the events are stored in the
OZONE GENERATOR FAULT archive and are retained even if
the fault is accepted in Fault Archive menu. The archive is only
over-written if a new fault is detected. By careful analysis of the
fault data, it is possible to determine between an abrupt fault,
and an intermittent fault.
▪ The COOLER FAULT menu consists of 120 readings of the
Cooler. The entries are sampled at every 1 second intervals.
The data in first column displays the current drawn by the Cooler
in Amperes. The data in the second column displays the %
output activation time of the Cooler. For instance, 90% means
that the Cooler is activated for 90% of the Pulse Width
Modulation period. If a fault is detected, the events are stored in
the COOLER FAULT archive and are retained even if the fault is
accepted in the Fault Archive menu. The archive is only over-
written if a new fault is detected.
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