7 adjusting the temperature, Operation – Hach-Lange 3400 sc User Manual
Page 25
21
Operation
4.6.3.1 Preparing Conductivity Reference Solutions
Use
Table 6: "Conductivity Reference Solutions" on page 21
to prepare a conductivity
reference solution with a value between 200 and 100,000 µS/cm. The value prepared
should be near the typical measured process value for best accuracy. Add the listed grams
of pure, dried NaCl to one liter of high-purity, deionized, CO
2
-free water at 25 °C to obtain
the stated conductivity.
4.7 Adjusting the Temperature
View or change the temperature using the steps below.
1.
Select the Main Menu.
2.
From the Main Menu, select SENSOR SETUP and confirm.
3.
Select the appropriate sensor if more than one sensor is attached and confirm.
4.
Select DIAG/TEST and confirm.
5.
Select TEMP ADJUST and confirm.
The temperature will be displayed.
6.
Edit the temperature and confirm.
Table 6: Conductivity Reference Solutions
Desired Solution Value
Grams NaCl to be added
µS/cm
mS/cm
ppm (NaCl)
1
100
0.10
50
0.05
200
0.20
100
0.10
500
0.50
250
0.25
1000
1.00
500
0.50
2000
2.00
1010
1.01
3000
3.00
1530
1.53
4000
4.00
2060
2.06
5000
5.00
2610
2.61
8000
8.00
4340
4.34
10000
10.00
5560
5.56
20000
20.00
11590
11.59
1
When using the ppm measuring scale for compounds other than NaCl, refer to the appropriate chemistry handbook for reference
solution for formulation.