The Analysis Cycle - Hach ANATEL PAT700 Operator's Manual

PAT700 Total Organic Carbon Analyzer – Run Modes
Chapter 4 Run Modes
4.1

The analysis cycle

An analysis cycle is comprised of a flush of the analysis cell, oxidation, and idle time (if the
cycle time is greater than the combined flush and oxidation time).
Oxidation time varies based on the amount of total organic carbon in the sample. Flush time
is configurable and idle time varies to allow for varying analysis cycle time. See
Idle time occurs only after an online TOC analysis has been completed and only if the elapsed
time has not exceeded the value for cycle time.
During idle time, the analyzer can operate in one of three ways: flow without conductivity, flow
with conductivity, or no flow.
• When flow without conductivity is selected, the sample valve opens during idle,
• When flow with conductivity is selected, the sample valve opens during idle, allowing
• When no-flow is selected, the analyzer sample valve closes, stopping all flow through
Anatel
allowing continuous flow through the cell. No conductivity is reported.
continuous flow through the cell. Conductivity of the water is reported.
the sample cell during idle.
Cycle time
(configurable)
Idle time
(variable)
Result reported
Figure 4-1 The TOC analysis cycle
Start
Flush time
(configurable)
Oxidation time
(variable)
Page 41
Figure 4-1.
Operator Manual