Hanna-instruments HI 9914 Manual de usuario descargar pdf (Pagina 17)

- Air bubbles also disturb measurements and the probe should be

installed in such a way as to minimize them.

Note: It is always recommended to keep at least one spare probe

handy. When anomalies are not resolved with a simple mainte-

nance, change the electrode (and recalibrate the controller) to see

if the problem is alleviated.

Note: Ensure that the probe is installed in such a way that it perma-

nently lies in the solution whether in the tank or the circulation

pipe.

ACCESSORIES

pH electrodes

HI 1001 pH electrode for continuous flow-through monitoring

HI 1002 pH electrode for continuous flow-through monitoring

HI 1003 pH electrode with matching pin

EC probes

HI 7632/D Conductivity probe, ATC, 1/2” thread, with DIN

connector and 2 m (6.6’) cable, for continuous flow-

through monitoring up to 3 atm pressure

HI 3003/D Conductivity probe, ATC, Pt-ring, Kynar

body,

1/2” thread, with DIN connector and 2 m (6.6’)

cable, for continuous flow-through monitoring up to

6 atm pressure

pH calibration solutions

HI 7004L pH 4.01 buffer solution, 500 mL bottle

HI 7007L pH 7.01 buffer solution, 500 mL bottle

HI 7010L pH 10.01 buffer solution, 500 mL bottle

EC calibration solutions

HI 7031L 1.41 mS/cm calibration solution, 500 mL bottle

HI 7039L 5.00 mS/cm calibration solution, 500 mL bottle

Maintenance solutions

HI 70300L Electrode storage solution, 500 mL bottle

HI 7061L General cleaning solution, 500 mL bottle

Other accessories

BL1.5, BL3, BL5, BL7, BL10, BL15, BL20

Dosing pumps with flow rate from 1.5 to 18.3 lph

(0.4 to 4.8 gph)

APPENDIX - A

pH VALUES AT VARIOUS TEMPERATURES.

The temperature directly affects the pH value.

For example, if the buffer’s temperature is 25°C (77°F), calibrate the

meter to read 7.01, 4.01 or 10.01; if the temperature is 20°C, calibrate

the meter to 7.03, 4.00 or 10.06; if the temperature is 50°C, calibrate

the meter to 6.98, 4.06 or 9.82; etc.

Please refer to the following chart for a more accurate pH calibration.

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

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Hanna-instruments HI 9914 Manual de usuario Pagina 17

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