Technical Specifications
11 Technical Specifications
11.1 Observed regulations/
standards (minimum requirement)
n
EN 61010-1
n
EN 60730-1
n
EN 60730-2
n
EN 61326-1
11.2 Technical data
n
Measured variable
–
Free chlorine (hypochlorous acid
HOCl)
–
In contrast to the DPD-1 measure‐
ment, organic chlorine compounds
(such as, e.g. isocyanuric acid deriva‐
tives) feign a chlorine concentration
that is too low, and cannot be reliably
measured
n
Applications
–
Water of drinking water quality
(observe pH range), swimming pool,
uncontaminated drinking water and
industrial process water, no sea
water, no VE water (conductivity > 50
μS/cm)
n
Measurement range
–
CLO1 - mA - 10 ppm accords to 0.1 ...
10 mg/l
–
CLO1 - mA - 2 ppm / CLO2 - mA - 2
ppm accords to 0.02 ... 2 mg/l
n
pH range
–
5 - 9
n
Conductivity of sample water
–
0.05 mS/cm to 10 mS/cm
n
Resolution
–
100 % of lower limit of measuring range
34
n
Zero point
–
4.00 mA
n
Electrical zero point error
–
± 0.12 mA
n
Maximum operating pressure
–
8 bar, no negative pressure
n
Cross-sensitivity
–
Ozone (O
3
–
mono-, di-/trichloroamine
–
Iodine
–
CIO
2
–
Bromine
–
Bromamines
n
Faults
–
Rust
–
Lime
–
Surfactants (e.g. tensides from
cleaning agents)
–
Hardness stabilisers
may deposit on the electrodes and cause incor‐
rect measurements
)