Page 54 Setup – PAT700 Total Organic Carbon Analyzer
Operator Manual Anatel
WGM - 28 November 2007 - Edition 01
The actual (uncompensated) conductivity limits are in accordance with the specifications set
forth in the method “<645> Water Conductivity” of the USP 25–NF 20 (January 2002).
The actual sample water temperature is rounded downward to the nearest 5° to establish the
conductivity limit, thereby assuring any potential excursions are detected early. For example,
if the measured water temperature is 24.5 °C, the 20 °C limit is applied and an alarm is
generated if the conductivity exceeds 1.1 μS/cm U.
To ensure agreement between all data outputs, TOC, conductivity, and temperature values
are all rounded to match the analyzer’s accuracy for alarm limit checking, display, printouts,
and any digital outputs.
Return icon returns you to the setup dialog box and saves the changes. Any changes are
noted in the audit trail.
5.6 Analogs
The analogs icon allows you to configure the analog outputs for the system. The analyzer has
analog outputs for TOC, conductivity, and temperature.
Table 5-1 Conductivity alarm limits
Temperature (°C) Uncompensated
Conductivity
(µS/cm)
Temperature (°C) Uncompensated
Conductivity
(µS/cm)
0 0.6 55 2.1
5 0.8 60 2.2
10 0.9 65 2.4
15 1.0 70 2.5
20 1.1 75 2.7
25 1.3 80 2.7
30 1.4 85 2.7
35 1.5 90 2.7
40 1.7 95 2.9
45 1.8 100 3.1
50 1.9
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