Ozone With Tablet - EVOQUA WALLACE & TIERNAN P7 ADVANCED Mode D'emploi

Methods

Ozone with Tablet

O3
0.02 – 2 mg/l O
a) in absence of Chlorine
Fill a clean vial (24 mm Ø) with 10 ml of the water sample and
0.0.0
perform zero calibration (see "Operation").
Remove the vial from the sample chamber and empty it, leaving a
few drops remaining in the vial.
Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from
the foil and crush the tablets using a clean stirring rod.
Add water sample to the 10 ml mark.
Close the vial tightly with the cap and swirl several times until the
tablets are dissolved.
Place the vial in the sample chamber making sure that the
are aligned.
Wait for a reaction period of 2 minutes.
! Zero
Test
(Countdown can be activated, see page 37)
O3
The method symbol flashes for approx. 3 seconds.
RESULT
The result is shown in the display as Ozone.
b) in presence of Chlorine (Chlorine with Ozone)
see method: Chlorine with Tablet, section e, Chlorine with ozone
Tolerances:
> 0.67 – 1.3 mg/l: ± 0.07 mg/l
> 1.3 – 2.0 mg/l: ± 0.13 mg/l
Notes:
see page 38
WT.050.311.000.DM.IM.0119
3
0 – 0.67 mg/l: ± 0.03 mg/l
P7 Advanced
marks
49