Hach-Lange SI794 C User Manual - Manual (Page 37)

37
Code Display Action Choices
o1 .
Only with 00.00 % conc:
select the process solution
Select using 4 key.
-01- NaCl (0.00 ... 9.99 % by wt)
(0 ... 120 °C)
-02- HCl (0.00 ... 9.99 % by wt)
(-20 ... 50 °C)
-03- NaOH (0.00 ... 9.99 % by wt)
(0 ... 100 °C)
-04- H
2
SO
4
(0.00 ... 9.99 % by wt)
(-17 ... 110 °C)
-05- HNO
3
(0.00 ... 9.99 % by wt)
(-17 ... 50 °C)
Press enter to proceed
-01-SOL
(-01-SOL
-02-SOL
-03-SOL
-04-SOL
-05-SOL)
Concentration measurement
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,
see page 106.
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.