V3.00/EN/00585076
Page 1/12Data Sheet 202634
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20263400T10Z001K000
JUMO tecLine ClO
2
and O
3
Sensors for chlorine dioxide (ClO
2
) and
ozone (O
3
), digital or analog
Brief description
These membrane-covered, amperometric sensors are used to measure the concentration of
chlorine dioxide or ozone in aqueous solutions.
The sensor for chlorine dioxide can be used to measure chlorine dioxide from chlorite/chlorine
and chlorite/hydrochloric acid plants. The sensor for ozone can be used to measure electrolyti-
cally generated ozone among other things.
The sensors are not suitable for detecting the absence of chlorine dioxide or ozone.
Depending on the type, the electronics integrated in the sensors provide an analog, tempera-
ture-compensated current signal (4 to 20 mA) or a digital Modbus RTU output signal.
The sensors can be connected directly to indicating devices/transmitters/controllers (see "Suit-
able indicating devices/transmitters/controllers ", page 10). They supply the sensors with volt-
age and allow for easy calibration of the measuring system.
Areas of application
Measurement in...
• Drinking water
• Swimming pool water
• Service water
• Process water
• Cooling water
Special features
• 2-electrodes principle
• Easy calibration
• Integrated temperature compensation
• Proven measuring system
• Electrical connection analog or digital
Type overview
Type Description Technical data
202634/45 ClO
2
, output signal of 4 to 20 mA see "Sensors for chlorine dioxide
(ClO
2
)",page4
202634/65 ClO
2
, digital interface output signal
202634/46 ClO
2
, output signal 4 to 20 mA,
chemical-resistant membrane
see "Sensors for chlorine dioxide
(ClO
2
) with membranes that are in-
sensitive to chemicals ", page 5
202634/66 ClO
2
, digital interface output signal,
chemical-resistant membrane
202634/50 O
3
, output signal of 4 to 20 mA see "Sensors for ozone
(O
3
) ", page 6
202634/60 O
3
, digital interface output signal
202634/51 O
3
, output signal 4 to 20 mA,
chemical-resistant membrane
see "Sensors for ozone (O
3
) with
membranes that are insensitive to
chemicals ", page 7
202634/61 O
3
, digital interface output signal,
chemical-resistant membrane
Type 202634/45... and type 202634/60...
V3.00/EN/00585076
Page 2/12Data Sheet 202634
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20263400T10Z001K000
Example of the measuring point set-up
Additional indicating devices/controllers: "Suitable indicating devices/transmitters/controllers ", page 10
The following components are required to set up a measuring point for measuring chlorine dioxide or ozone:
Voltage supply
from JUMO
dTRANS AS 02
Outputs*:
*
Possible combinations
s 2025ee data sheet 53
Relay outputs
Binary outputs
Calibrated analog outputs
(free chlorine, chlorine dioxide,
ozone, 0(4) to 20 mA / 0 to 10 V,
galvanically isolated)
Interfaces
(Modbus, PROFIBUS-DP,
data logger)
U calibratedn sensor signal
(4 20 mA)to
(2)
(4)
(3)
(1)
(1) Amperometric sensor, membrane-covered (output signal of 4 to 20 mA)
(2) Transmitter/controller (JUMO dTRANS AS 02)
(3) Flow monitor (optional extra, recommended)
(4) Fitting for membrane-covered sensors (JUMO combination fitting 202811/10)