Hanna-instruments HI 83206-2008 Manual do Utilizador descarregar pdf (Página 16)

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Color of Water

COLOR OF WATER

SPECIFICATIONS

Range 0 to 500 PCU (Platinum Cobalt Units)

Resolution 1 PCU

Accuracy ±10 PCU ±5% of reading

Typical EMC ± 1 PCU

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 420 nm

Method Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition

, Colorimetric Platinum Cobalt method.

REQUIRED ACCESSORIES

0.45 µm membrane for true color measurement.

For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Color of Water

method using the procedure described in

the

Method Selection

section (see page 12).

• Fill one cuvette up to the mark with deionized water and replace

the cap. This is the blank.

• Place the blank (# 1) into the holder and close the lid.

• Press ZERO key. The meter will show “-0.0-” when the meter is

zeroed and ready for measurement.

• Remove the blank.

10 mL

# 1

• Reinsert the cuvette into the instrument.

• Press TIMER and the display will show the countdown prior to the

measurement or, alternatively, wait for 6 minutes and press

READ. When the timer ends the meter will perform the reading.

The instrument displays concentration in µg/L of chromium VI.

• Press the  or  to access the second level of functions.

• Press the Chem Frm functional key to convert the result in µg/L of Chromate (CrO

) and Dichromate

(Cr

• Press the  or  to go back to the measurement screen.

INTERFERENCES

Interference may be caused by:

Vanadium above 1 ppm. However, waiting 10 minutes before reading, the interference is removed.

Iron above 1 ppm

Mercurous and mercuric ions cause slight inhibition of the reaction.

Chromium VI LR

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 38 39

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