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PRESSURE CHCK FAULT
FLOW WARNING
8.3.5 Output Devices
8.3.5.1
System Outputs
POWERED ALL TIME
VALVE ACTIVATION
6.0l/h
At the end of each reaction during operation, BioTector
automatically pressurizes the system with oxygen gas and uses
its mass flow controller to detect any gas leak in the system. If
the measured flow is less than or equal to the programmed
PRESSURE CHECK FAULT flow level (locked to 6.0 l/h by
default) during the test, the pressure check passes. The
PRESSURE CHECK FAULT acts a safety function, to ensure
that there is no gas leak in the system and it is safe to start the
next analysis reaction.
The pressure check cycle cannot be disabled in the system.
If the flow measured during the pressure check is greater than
the programmed PRESSURE CHECK FAULT level (greater than
6.0 l/h) the pressure check fails, and BioTector generates a
"06_PRESSURE CHCK FAIL" fault and stops. This fault is
logged in the fault archive.
54.0l/h
Each time BioTector is started up and everyday during online
operation at the programmed TIME above, oxygen gas flows
through the system and mass flow controller is used to detect
any blockage in the system. If the measured flow is greater than
or equal to the programmed FLOW WARNING level (54.0 l/h by
default), the flow test passes.
If the measured flow is less than the programmed FLOW
WARNING setting, the flow test fails, and BioTector generates a
"22_FLOW WARNING - EX" or "23_FLOW WARNING - SO" in
the fault archive and continues to run. This warning is logged in
the fault archive.
In TC – TIC systems, BioTector generates a "24_TIC FLOW
WARN - EX" or "25_TIC FLOW WARN - SO" if TIC reactor flow
test fails.
NO
POWERED ALL TIME parameter specifies if the relays are
powered all the time even if the system is stopped or paused
with the YES setting, or if the relay is powered only when
required with the default NO setting.
VALVE ACTIVATION determines the two possible times for the
SPF/SAMPLER
multi-stream valve to change over for the next stream. If the
default SPF (SAMPLE PUMP FORWARD) option is selected,
the valve for the next stream is selected as the Sample Pump
starts to run forward to bring the sample from the next stream. If
SPR (SAMPLE PUMP REVERSE) option is selected, the valve
for the next stream is selected when the Sample Pump reverse
operation is completed for the current stream, or when the
BioTector powers up.
If SAMPLER is activated in Stream Program menu, SPF option
is displayed as SPF/SAMPLER.
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