Hanna-instruments HI 83200 Manual de usuario descargar pdf (Pagina 48)

94 95

Ozone

• Press the Zero key. The display will show “-0.0-” the meter is zeroed and ready for measurement.

• Remove the cuvette.

• Add the content of one packet of HI 93757-0 Ozone

Reagent. Replace the cap and shake gently for

20 seconds.

• Replace the cuvette into the holder and close the lid.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait

for 2 minutes and press Read. When the timer ends the meter will perform the reading.

• The instrument displays concentration in mg/L of ozone (chlorine free samples only).

ADDITIONAL MEASUREMENT PROCEDURE

For samples containing chlorine

• Select the

Ozone

method using the procedure described in

the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample, up to

the mark, and replace the cap.

• Place the cuvette into the holder and close the lid.

OZONE

SPECIFICATIONS

Range 0.00 to 2.00 mg/L

Resolution 0.01 mg/L

Accuracy ±0.02 mg/L ±3% of reading at 25 °C

Typical EMC ±0.01 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 525 nm

Method Colorimetric DPD Method. The reaction between ozone and the DPD reagent causes a

pink tint in the sample.

REQUIRED REAGENTS

Code Description Quantity/test

HI 93757-0 DPD Powder Reagent 1 packet

HI 93703-52-0 Glycine Powder (Optional Reagent) 1 packet

REAGENT SETS

HI 93757-01 Reagents for 100 tests

HI 93757-03 Reagents for 300 tests

HI 93703-52 Glycine Powder, Optional Reagent for 100 tests

For other accessories see page 124.

IMPORTANT NOTE: Chlorine is a strong interferent for ozone determination. If the sample is suspected to

contain chlorine residues (free or total chlorine), please follow the alternative measurement procedure

described below:

• Perform the Standard Measurement Procedure and take note of the reading:

value A

• On a fresh sample perform the Additional Measurement Procedure and take note of the reading:

value B

• Subtract reading

from reading

to obtain the ozone concentration in mg/L:

mg/L (O

) =

value A

–

value B

STANDARD MEASUREMENT PROCEDURE

• Select the

Ozone

method using the procedure described

in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample, up to

the mark, and replace the cap.

• Place the cuvette into the holder and close the lid.

Ozone

10 mL

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 64 65

Comentarios a estos manuales

Sin comentarios

Hanna-instruments HI 83200 Manual de usuario Pagina 48

Comentarios a estos manuales

Relacionado con productos y manuales para Instrumentos de medición Hanna-instruments HI 83200