Hanna-instruments HI 5000 Manuel d'utilisateur télécharger pdf (Page 27)

pH VALUES AT VARIOUSpH VALUES AT VARIOUS

pH VALUES AT VARIOUS

TEMPERATURESTEMPERATURES

TEMPERATURES

With HI 9913 and HI 9935, the cycles are selectable

from 1 to 10 minutes for both pH and EC/TDS. For HI

9923 instead, the timers can be set from 1 to 90

minutes to allow for proper blow down of the boiler or

cooling tower.

Should this period elapse, the alarm terminals are

activated (and dosage terminals are disactivated).

This is to ensure that fertilizers or chemicals have not

run out or pumps or electrovalves have not ceased to

function properly.

m TIMER

MINUTES

TIMER

MINUTES

TIMER

MINUTES

2.5

7.5

TEMP pH VALUES

°C °F 4.01 6.86 7.01 9.18 10.01

104

113

122

131

140

149

158

4.01

4.00

4.01

4.02

4.03

4.04

4.05

4.06

4.07

4.09

4.11

4.12

6.98

6.95

6.92

6.90

6.88

6.86

6.85

6.84

6.83

6.84

6.85

7.13

7.10

7.07

7.04

7.03

7.01

7.00

6.99

6.98

6.99

9.46

9.39

9.33

9.27

9.22

9.18

9.14

9.10

9.07

9.04

9.01

8.99

8.97

8.95

8.93

10.32

10.24

10.18

10.12

10.06

10.01

9.96

9.92

9.88

9.85

9.82

9.79

9.77

9.76

9.75

Please refer to the following chart for a more accurate pH calibra-

tion:

For instance, if the buffer temperature is 25°C (77°F), calibrate the

meter to read 4.01, 7.01 or 10.01 on the display.

If the buffer temperature is 20°C, calibrate it to 4.00, 7.03 or 10.06.

If the buffer temperature is 50°C, calibrate it to 4.06, 6.98 or 9.82.

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Hanna-instruments HI 5000 Manuel d'utilisateur Page 27

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