Hach-Lange SI794 I User Manual - Manual (Page 112)

112
Concentration measurement
Ranges
For the solutions listed above, the transmitter can determine the sub-
stance concentration from the measured conductivity and temperature
values in % by wt. The measurement error is made up of the sum of
measurements errors during conductivity and temperature measurement
and the accuracy of the concentration curves stored in the transmitter.
We recommend to calibrate the transmitter together with the sensor.
For exact temperature measurement, you should perform a temperature
probe adjustment. For measuring processes with rapid temperature
changes, a separate temperature probe with fast response should be
used.
When measuring processes such as dilution or intensification of CIP solu-
tions (Clean-In-Place), it is helpful to switch between the parameter sets
for measuring the process medium and for measuring the CIP solution.
0-18 % by wt (-20 °C)
0-18 % by wt (50 °C)
-02-
Substance Concentration ranges
NaCl
Configuration
0-26 % by wt (0°C)
0-26 % by wt (100°C)
-01-
HCl
Configuration
22-39 % by wt (-20 °C)
22-39 % by wt (50°C)
-07-
NaOH
Configuration
0-13 % by wt (0 °C)
0-24 % by wt (100 °C)
-03-
H
2
SO
4
Configuration
0-26 % by wt (-17 °C)
0-37 % by wt (110 °C)
-04-
28-77 % by wt (-17°C)
39-88 % by wt (115 °C)
-09-
94-99 % by wt (-17°C)
89-99 % by wt (115 °C)
-06-
HNO
3
Configuration
35-96 % by wt (-20°C)
35-96 % by wt (50°C)
-08-
0-30 % by wt (-20°C)
0-30 % by wt (50°C)
-05-
15-50 % by wt (0 °C)
35-50 % by wt (100°C)
-10-