04E3920 User Manual QuickTOC
®
purity
ATEX 2 17
2 Operating Principle of the Analyser
2.1 Measurement of TOC
LAR | PROCESS ANALYSERS AG
2.1.6.2 Advantages
The TC only method is the correct choice when the concentration of the organic carbon is considerably
greater that the concentration of the anorganic carbon, especially when the anorganic fraction can be
neglected as a result (TIC < 5% of the TC):
TOC = TC - TIC
(TIC <<< TOC)
TOC = TC - (~0)
TOC = TC [mg/l C]
Summing up the advantages of the TConly Method:
• Measurement results are available in 60 to 90 seconds.
• No reagents and acids are required.
• Overhead for care and maintenance is very low.
2.1.6.3 Measurement Ranges
The analyser can be deployed in several measurement ranges (application-specific). Each measure-
ment range is assigned a recommended working range.
Table 2: Overview of the Measuring Ranges for TN
b
Measurement
Table 1: Overview of the Measuring Ranges for TOC and TC Measurement
Measuring Range
0,1 - 20 mg/l (ppm)
0,5 - 50 mg/l (ppm)
2 - 200 mg/l (ppm)
5 - 1.000 mg/l (ppm)
10 - 2.000 µg/l (ppb)
Measuring Range
0,1 - 50 mg/l (ppm)
10 - 200 mg/l (ppm)
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