GE Analytical Instruments ©2016
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DLM 68100-09 EN Rev. A
Chapter 6: Analyzer Operation
The second exception is the
Daily Flush
. Once every 24 hours of online operation, the Analyzer flushes the
reagents, dilution water, and check standard. The time of day that the flush occurs is selected by the operator.
The operator also may choose to have the sample inlets back flushed with acid as part of the flush by enabling
the
Clean Inlet
function.
Operation with Multiple Streams
The InnovOx On-Line TOC Analyzer may be used to monitor multiple streams. The base configuration can
monitor two streams, and five streams can be monitored with the optional 5-Stream configuration. With the
exception of the number of streams, both Analyzers are set up the same way.
When multiple streams are measured, the Analyzer measures the enabled streams in numerical order. For
example, Stream 2 follows Stream 1. Any disabled streams are skipped. If the Fail Safe option is employed,
streams are also skipped whenever a stream stops flowing. When flow resumes in that stream, the Analyzer will
measure it again in its original sequence.
Cycle Frequency
Many users prefer to obtain a TOC measurement of each stream every hour, every two hours, and so on. The
Cycle Frequency
setting makes it easy to make these periodic measurements.
To set the
Cycle Frequency
, the
Continuous
setting must be
Off
. In the example shown in
Cycle
Frequency
is set to one (1) hour. Only one Stream is enabled, so measurement of that stream starts every hour.
In the example shown in the following figure,
Figure 43: Operation with Five Streams and the Check Standard
five Streams are enabled. The
Cycle Frequency
is set to two (2) hours, so measurement of the enabled Streams
starts every two hours.
N
OTE
:
To increase the accuracy and speed of the measurements, observe the concentrations in adjacent
sample streams. Minimize the concentration difference between adjacent streams. It takes more
time to get an accurate measurement because more Sample Flushes are required, when one
stream is a much higher concentration than the following stream.
