Page 51
Run Modes
4.3.1 Sampling with pressure
CAUTION
Potential burst hazard! Do not exceed the maximum 100 psi (690k Pa) sample
pressure ratings.
Note: Using the sample pump on a pressurized system could damage the pump. Do not use the
sample pump on a pressurized system.
In online TOC mode, the cell valve opens to flush the cell.
• When flushing is completed, the cell’s sample valve closes, the analysis begins, and
initial conductivity and temperature readings are fed into the TOC algorithm.
Conductivity is monitored until oxidation is complete.
• When oxidation is complete, the analyzer reports the results to the home screen, the
data log, and the printer, based on the printer settings and if the printer is connected.
The analyzer then checks to see if the elapsed time is greater than or equal to the
value for cycle time in settings. If it is, the next online TOC analysis is started.
Otherwise, the analyzer enters the idle mode.
4.3.2 Sampling from a zero pressure system
If you are sampling from a zero pressure system, you can enable the pump option to
draw water into the cell. For instructions on setting up the pump option, see General tab,
page 56.
4.4 Conductivity mode
In conductivity mode, the home screen displays conductivity and temperature readings.
See Figure 26.
In conductivity mode, the analyzer starts by verifying that the UV lamp is off and the cell
valve is open to flush the cell. The analyzer reports the current readings for conductivity
and temperature every time a new value is available. The reported value is an average of
the data over the last two seconds. The average reading is also sent to the printer, based
on the printout settings, and to the data log. One data point is written to the log every 60
seconds.
Figure 26 Home screen, current tab, conductivity mode
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