Hach POLYMETRON 9125 Operator's Manual page 48

Transmitter 9125 – Conductivity / resistivity measurement
Page 46
Example: if the measured temperature is equal to
22°C, the threshold is of 1.1 S/cm and shall remain at
this value as long as the temperature stays at 22°C. If
the temperature varies, rising to 25°C, the threshold
automatically switches to 1.3 S/cm.
NB: The delivered alarm corresponds to the value of
the threshold associated with the USP temperature
immediately below the measured temperature (i.e.
20°C and 25°C in the previous example).
T°C Non- T°C
compensated
conductivity
S/cm
0 2.4 35
5 3.0 40
10 3.6 45
15 3.95 50
20 4.3 55
25 5.1 60
30 5.4 65
Table 2 - Temperature curve and conductivity requirements
for purified water (non temperature-compensated conductivity
measurements).
Non- T°C Non-
compensated compensated
conductivity conductivity
S/cm S/cm
5.95 70 9.1
6.5 75 9.7
6.8 80 9.7
7.1 85 9.7
7.6 90 9.7
8.1 95 9.95
8.6 100 10.2