Evoqua WALLACE & TIERNAN DEPOLOX 400 M, Operating Manual, Page: 35 / 152

DEPOLOX
®
400 M
Description
3.
35
CD7 (chlorine dioxide) OZ7 (ozone)
Measured value Chlorine dioxide, selective toward
Cl
2
, Br
2
, H
2
O
2
, cross-sensitivity to
O
3
, peracetic acid
Ozone, selective toward Cl
2
, Br
2
,
H
2
O
2
, cross-sensitivity to ClO
2
,
peracetic acid
Power supply Un12 – 15 VDC, 11 mA
Typical output signal approx. 10 µA per 1 mg/l (ppm)
Cl0
2
approx. 10 µA per 1 mg/l (ppm) O
3
Measuring system Membrane-covered 2-electrode system
Reference electrode Silver / silver halide / potassium halide solution
Working electrode Gold
Further materials PVC, silicone rubber, stainless steel
External dimensions Ø 25 mm (1"), length 175 mm (6.9")
Connector-cable combina
-
tion
Cable length 1.2 m
Electrolyte Diluted potassium halide solution,
100 ml bottle, store in a dark place
at 15°C to 25°C, can be used for a
max. of 2 years if still evenly clear Diluted potassium halide solution,
100 ml bottle, store in a dark place
at 15°C to 25°C, can be used for a
max. of 1 year if still evenly clear
Range 0.05 – 20 mg/l (ppm) Cl0
2
0.02 – 10 mg/l (ppm) O
3
Analysis DPD 1 + DPD 3
Zero point calibration Not necessary (zero point signal at
0 mg/l Cl0
2
= 0 µA)
Not necessary (zero point signal at
0 mg/l O
3
= 0 µA)
Response time T
90
< 20 sec. < 50 sec.
Influence of the pH value No signal influence up to stability
limit Cl0
2
No signal influence up to stability
limit ozone
Temperature compensa
-
tion
Internal temperature compensation 5 – 45 °C
Storage temperature -10 – +45 °C (without electrolyte)
Max. pressure 1.5 bar (21.76 PSI) with suitable flow cell module, no pressure surges
and/or vibrations. Observe the back pressure of the flow cell module!
Water quality All types of water, swimming pool,
drinking, service and process water
(limescale deposits can block the
membrane) All types of water, swimming pool,
drinking, service and process water
(also containing surfactants),
(limescale deposits can block the
membrane)
Conductivity > 1 µS/cm to max. 40 mS/cm > 1 µS/cm to max. 40 mS/cm
Flow 6 – 35 l/h, as constant as possible 6 – 35 l/h, as constant as possible
Service life Service life of the electrolyte in
operation approx. 6 months, ser
-
vice life of the membrane cap typi
-
cally 1 year (less with poor water
quality, e.g. sand, dirt)
Service life of the electrolyte in
operation approx. 6 months, ser
-
vice life of the membrane cap typi
-
cally 1 year (less with poor water
quality, e.g. sand, dirt)
Cross-sensitivity Ozone, peracetic acid Chlorine dioxide, peracetic acid
Selectivity Toward chlorine, bromine, hydro
-
gen peroxide
Toward chlorine, bromine, hydro
-
gen peroxide