JUMO tecLine ClO2 User manual

20263400T90Z001K000
V3.00/EN/00585740/2022-10-28
JUMO tecLine ClO2 and O3
Sensors for chlorine dioxide (ClO2) and ozone (O3)
Typ 202634
Operating Manual

Contents
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1.2 Warning symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1.3 Note symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Areas of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3 Output signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.4 Suitable indicators/transmitters/controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.5 Sensor details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.6 Important information for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.6.1 Notes for all types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.6.2 Notes for types with hydrophobic membranes (202634/45, /50, /60, /65) . . . . . . . . . . . . . .11
3 Identifying the device version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Nameplate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.2 Order details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.4 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Important information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.2 Combination fitting (type 202811/10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2.1 Mounting the combination fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2.2 Installing the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.3 Flow fitting for membrane-covered sensors (type 202811/30) . . . . . . . . . . . . . . . . . . . . . . .22
4.3.1 Mounting the fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3.2 Installing the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.4 Flow monitor for disinfection measurands (type 202811/20). . . . . . . . . . . . . . . . . . . . . . . . .24
4.4.1 Mounting the flow monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 Sensors with an output signal of 4 to 20 mA (types 202634/45, /47, /50, and /52). . . . . . . .25
5.1.1 General requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.1.2 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.1.3 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.2 Sensors with digital interface output signal (types 202634/60, /62, /65, and /67). . . . . . . . .27
5.2.1 General requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.2.2 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.3 Flow monitoring (combination fitting and flow monitor). . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.3.1 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Contents
5.4 Combination fitting temperature probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.4.1 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.5 Example of a measuring section with the sensor type 202634/45 . . . . . . . . . . . . . . . . . . . .28
5.5.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.5.2 Connection example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 Important notes for screwing the membrane cap on and off. . . . . . . . . . . . . . . . . . . . . . . . .29
6.2 Initial filling and installation of the membrane cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6.2.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) . . . . . . . . . . . . . . . . . . . . . .30
6.2.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) . . . . . .32
6.3 Minimum inflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
6.3.1 Adjusting the minimum inflow (combination fitting and flow monitor) . . . . . . . . . . . . . . . . . .34
6.4 Settling time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
7 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.2 Calibrating with an indicator/controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
8 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1 Replacing the electrolyte. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
9.1.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) . . . . . . . . . . . . . . . . . . . . . .37
9.1.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) . . . . . .39
9.2 Replacing the membrane cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
9.2.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) . . . . . . . . . . . . . . . . . . . . . .41
9.2.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) . . . . . .43
9.3 Removing calcium deposits from the membrane cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
9.4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
9.5 Consumable material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
10 Overcoming errors and malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10.1 General troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
10.2 Specific troubleshooting on the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
10.2.1 Testing the leak-tightness of the membrane cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
10.2.2 Electronics test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
10.2.3 Testing the zero point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
10.2.4 Measurement signal test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
10.2.5 Testing the environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Contents
11 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11.1 Sensors for chlorine dioxide (ClO2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
11.1.1 Version with output signal 4 to 20 mA (type 202634/45). . . . . . . . . . . . . . . . . . . . . . . . . . . .51
11.1.2 Version with digital interface output signal (type 202634/65) . . . . . . . . . . . . . . . . . . . . . . . .52
11.2 Sensors for chlorine dioxide (ClO2) with membranes that are insensitive to chemicals . . . .53
11.2.1 Version with output signal 4 to 20 mA (type 202634/47). . . . . . . . . . . . . . . . . . . . . . . . . . . .53
11.2.2 Version with digital interface output signal (type 202634/67) . . . . . . . . . . . . . . . . . . . . . . . .55
11.3 Sensors for ozone (O3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
11.3.1 Version with output signal 4 to 20 mA (type 202634/50). . . . . . . . . . . . . . . . . . . . . . . . . . . .56
11.3.2 Version with digital interface output signal (type 202634/60) . . . . . . . . . . . . . . . . . . . . . . . .57
11.4 Sensors for ozone (O3) with membranes that are insensitive to chemicals . . . . . . . . . . . . .58
11.4.1 Version with output signal 4 to 20 mA (type 202634/52). . . . . . . . . . . . . . . . . . . . . . . . . . . .58
11.4.2 Version with digital interface output signal (type 202634/62) . . . . . . . . . . . . . . . . . . . . . . . .59
11.5 All sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
11.5.1 Maintenance, storage, and transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
12 China RoHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

6
1 Introduction
1Introduction
1.1 Safety information
1.1.1 General Information
This manual contains information that must be observed in the interest of your own safety and to avoid
material damage. This information is supported by symbols which are used in this manual as indicated.
Please read this manual before starting up the device. Store this manual in a place that is accessible to
all users at all times.
If difficulties occur during startup, please do not intervene in any way that could jeopardize your warranty
rights!
1.1.2 Warning symbols
WARNING!
This symbol in connection with the signal word indicates that personal injury may occur if the respective
precautionary measures are not carried out.
NOTICE!
This note in connection with the signal word indicates that material damage or data loss will occur if
the respective precautionary measures are not taken.
1.1.3 Note symbols
NOTE!
This symbol refers to important information about the product, its handling, or additional benefits.

7
2 Description
2 Desc rip tion
2.1 Areas of application
These membrane-covered amperometric sensors are used to determine the concentration of chlorine
dioxide or ozone in water.
Typical areas of application include the monitoring of swimming pool, drinking, service, process, and
cooling water.
The sensors with hydrophobic PTFE membranes (types 202634/45, /65, /50, and /60) can only be used
in media of swimming pool or drinking water quality.
The sensors with membranes that are insensitive to chemicals and surfactants (types 202634/47, /67, /
52, and /62) can be used in media with almost all water qualities.
NOTE!
Solid materials in the media clog up the membrane and prevent the sensors from working correctly.
NOTE!
Calcium oxide can block the membrane.
NOTE!
The sensors are not suitable for detecting the absence of chlorine dioxide or ozone.
2.2 Design
The sensors have a membrane-covered, amperometric two-electrode measuring system.
The working electrodes (cathodes) are made of gold (Au). The anodes, which perform the role of a com-
bined reference and counter electrode, are made of silver (Ag) and have a silver halide (AgHal) coating.
For the measuring methods used here, chlorine dioxide or ozone diffuses through the membrane from
the measurement medium and, combined with the electrolytes, triggers an electrical signal at the work-
ing electrode. This signal is proportional to the concentration of chlorine dioxide or ozone and is amplified
by the electronics. The measurement signal is mainly independent of the temperature of the media
thanks to integrated temperature compensation.
2.3 Output signal
As the measurement signal of the amperometric sensors is temperature-dependent, an automatic tem-
perature compensation is carried out by an integrated NTC resistor. The recommended temperature
range is 01 to +45 °C.
In the analog versions, the integrated sensor electronics provide a current signal of 4 to 20 mA, and in
the digital versions, they provide a Modbus RTU interface signal.
Calibration is carried out in a downstream device (indicator, controller, recorder, PLC, etc.).
The sensors can be connected directly to any suitable indicators and controllers. They provide the volt-
age required for supplying the sensors and allow for easy calibration of the measuring systems.
1Prerequisite: no ice crystals in the measuring water.

2 Description
8
2.4 Suitable indicators/transmitters/controllers
Type Features Suitable sensors
JUMO AQUIS 500 AS Single-channel (4 to 20 mA) indicating de-
vice/controller, additional temperature in-
put, binary input, up to 2 analog and
switching outputs
Types 202634/45, /47, /50,
and /52 (output signal of
4 to 20 mA)
JUMO AQUIS 500 RS Single-channel (Modbus RTU) indicating
device/controller, additional temperature in-
put, binary input, up to 2 analog and switch-
ing outputs
Types 202634/60, /62, /65,
and /67 (digital interface)
JUMO dTRANS AS 02 Modular multichannel transmitter/controller
for standard signals, PROFIBUS-DP,
RS422/485, data logger using optional
boards
Types 202634/45, /47, /50,
and /52 (output signal of
4 to 20 mA)
JUMO AQUIS touch S/P Modular multichannel measuring devices
for liquid analysis with integrated controller
and paperless recorder, USB host, USB de-
vice, Modbus, PROFIBUS DP, and Ether-
net using optional boards
All types 202634

9
2 Description
2.5 Sensor details
Types 202634/45 and /50
4to 20 mA version
Types 202634/60 and /65
Modbus RTU version
(1) Valve opening
(2) PTFE membrane
(3) Membrane cap
(4) Transparent cover (hose ring)
(5) Measuring electrode
(6) Electrode finger (reference electrode)
(7) O-ring
(8) Sensor shaft with integrated electronic components
(9) 2-pole terminal for measuring cable connection
(10) O-ring
(11) Cover
(12) Pg screw connection
(13) M12 flange connector
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(1)
(9)
(10)
(11)
(12)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(1)
(13)

2 Description
10
Types 202634/47 and /52
4to20mA version,
membrane that is insensitive to chemicals
Types 202634/62 and /67
Modbus RTU version,
membrane that is insensitive to chemicals
(1) Membrane disk
(2) Membrane holder (stainless steel)
(3) Membrane cap
(4) Working electrode of the electrode finger
(5) Reference electrode of the electrode finger
(6) Pressure equalization opening
(7) O-ring
(8) Sensor body with integrated electronic components
(9) 2-pole terminal for measuring cable connection
(10) O-ring
(11) Cover
(12) Pg screw connection
(13) M12 flange connector

11
2 Description
2.6 Important information for use
2.6.1 Notes for all types
NOTICE!
An unsuitable measuring environment may produce incorrect measurement results.
Using the sensors without the use of suitable flow fittings will lead to incorrect measurement results.
In order to ensure error-free measurements, the sensors must be installed in suitable flow fittings,
see chapter 4.2 "Combination fitting (type 202811/10)", Page 19 or chapter 4.3 "Flow fitting for mem-
brane-covered sensors (type 202811/30)", Page 22.
NOTICE!
Incorrect handling may cause damage to the membrane caps.
Screwing an unfilled membrane cap fully onto the sensor before startup may cause mechanical damage
to the membrane. In addition, screwing on a filled membrane cap without placing the sensor into the
measurement media can cause salt or gel residues to be deposited.
Screwing on the membrane cap without then starting up the sensor should be avoided.
NOTICE!
The membranes may be damaged by high pressure.
Operating the sensors with increased pressure may cause the membranes to rip.
The sensors should be operated under as little pressure as possible, with the measurement media
able to flow freely. If this is not possible, the sensors can be operated under a constant pressure of
up to 1 bar (relative pressure) or 2 bar (absolute pressure). Fluctuations in pressure must be avoid-
ed.
2.6.2 Notes for types with hydrophobic membranes (202634/45, /50, /60, /65)
The sensor membranes are made of hydrophobic, microporous PTFE material. These sensors should
only be used in water which has the qualities of drinking or swimming pool water. Under no circumstanc-
es should the water contain surfactants (contained in some cleaning agents and disinfectants). Surfac-
tants destroy the hydrophobic properties of the membrane. It can therefore no longer be guaranteed that
the sensors will work correctly.
The sensors for chlorine dioxide provide an alternative for measurement solutions containing surfactant
with membranes that are insensitive to chemicals (types 202634/47 and 202634/67) or the sensors for
ozone with membranes that are insensitive to chemicals (types 202634/52 and 202634/62).
NOTICE!
Unsuitable measurement media may produce incorrect measurement results.
Using the sensors to measure contaminated media may lead to incorrect measurement results.
In order to ensure error-free measurements, the measurement media must have the qualities of
swimming pool or drinking water and must not contain any solids.

2 Description
12
NOTICE!
Irritating substances may produce incorrect measurement results.
Using the sensors to measure media containing surfactants may lead to incorrect measurement results.
In order to ensure error-free measurements, the measurement media must not contain surfactants
(surface-active substances e.g. from detergents, cleaning agents or disinfectants).
NOTICE!
Harmful substances may lead to incorrect measurement results and cause damage to the mem-
brane caps.
Using the sensors to measure media containing hydrophobic substances may lead to incorrect measure-
ment results. Hydrophobic substances can damage the membrane caps.
In order to ensure error-free measurements, the measurement media must not contain hydrophobic
substances (e.g. oil or grease).

13
3 Identifying the device version
3 Identifying the device version
3.1 Nameplate
Position
The nameplate is glued to the top of the sensor.
Table of contents
The nameplate contains important information. This includes:
Device type (Typ)
Compare the specifications on the nameplate with your order documents. The supplied device version
can be identified using the order code in chapter 3.2 "Order details", Page 14.
Fabrication number (F-Nr.)
The fabrication number provides information such as the production date (year/week). The figures in
question are in positions 12, 13, 14, and 15 (from the left).
Example: F no. = 0000000000022350005. The device was produced in the year 2022, in the 35th week.
Description Designation on the nameplate Example
Device type Type 202634/45-20
Fabrication number F no. 000000000002235000500

3 Identifying the device version
14
3.2 Order details
3.3 Scope of delivery
(1) Basic type
202634 JUMO tecLine ClO2 + O3
Sensors for chlorine dioxide and ozone
(2) Basic type extension
45 Sensor for chlorine dioxide, output signal 4 to 20 mA
47 Sensor for chlorine dioxide, output signal 4 to 20 mA, insensitive to chemicals and surfactants
50 Sensor for ozone, output signal 4 to 20 mA
52 Sensor for ozone, output signal 4 to 20 mA, insensitive to chemicals and surfactants
60 Sensor for ozone, digital output signal
62 Sensor for ozone, digital output signal, insensitive to chemicals and surfactants
65 Sensor for chlorine dioxide, digital output signal
67 Sensor for chlorine dioxide, digital output signal, insensitive to chemicals and surfactants
(3) Measuring rangea
10 0 to 0.5 mg/l (ppm)
20 0 to 2 mg/l (ppm)
25 0 to 5 mg/l (ppm)
35 0 to 10 mg/l (ppm)
37 0 to 20 mg/l (ppm)
aOther measuring ranges upon request.
(1) (2) (3)
Order code /-
Order example 202634 / 45 - 20
Types 202634/45, /47, /50
and /52
Two-wire sensor, incl. membrane cap, electrolyte, special abrasive paper for cath-
ode cleaning and operating manual
Types 202634/60, /62, /65
and /67
Modbus RTU sensor, incl. membrane cap, electrolyte, special abrasive paper for
cathode cleaning and operating manual

15
3 Identifying the device version
3.4 Accessories
Fittings
Spare part sets and electrolytes
Accessories for sensors with a digital interface (type 202634/60, /62, /65, /67)
Transmitters/controllers for sensors with an output signal of 4 to 20 mA (type 202634/45, /47, /50, /52)
Description Part no.
Combination fitting for mounting several electrochemical sensorsa00607325
Individual fitting for mounting a membrane-covered sensor 00392611
Mounting bracket for individual fitting 00455706
Flow monitor for monitoring the minimum inflowb00605507
aWith integrated flow monitor, mini ball valve included.
bFor flow monitoring in connection with the individual fitting.
Description Part no.
Spare part set for 202634/45, /50, /60 and /65 (1 x membrane cap, fine abrasive paper) 00392331
Spare part set for 202634/47 and /67 (1 x membrane cap, fine abrasive paper) 00753804
Spare part set for 202634/52 and /62 (1 x membrane cap, fine abrasive paper) 00762731
Special electrolyte for 202634/45, /47, /65, and /67 (100 ml) 00392332
Special electrolyte for 202634/50, /52, /60, and /62 (100 ml) 00392333
Description Part no.
JUMO digiLine huba00646871
JUMO power supply unit for JUMO digiLine huba00661597
1.5 m connecting cable, 5-pole M12 connector, A-coded on the ferrules 00638333
5 m connecting cable, 5-pole M12 connector, A-coded on the ferrules 00638337
10 m connecting cable, 5-pole M12 connector, A-coded on the ferrules 00638341
aWhen connecting multiple sensors with a digital interface (type 20263x) to the JUMO AQUIS touch S/P, the JUMO
digiLine hub and an external power supply (e.g. part no. 00661597) are required. For further accessories see data
sheet 202705.
Designation Part no.
JUMO AQUIS 500 AS, type 202568/20-888-888-888-310-310-23/000
(for further versions, please refer to data sheet 202568)
00528718
JUMO dTRANS AS 02, type: 202553/01-8-01-4-0-00-23/000
(fur further versions, please refer to data sheet 202553)
00550842
JUMO AQUIS touch S/P Refer to data
sheets
202580/81

3 Identifying the device version
16
Transmitters/controllers for sensors with a digital interface (type 202634/60, /62, /65, /67)
Designation Part no.
JUMO AQUIS 500 RS, type 202569/20-654-888-888-310-310-23/000
(for further versions, please refer to data sheet 202569)
00602275
JUMO AQUIS touch S/P Refer to data
sheets
202580/81

17
4 Mounting
4 Moun ting
4.1 Important information
NOTICE!
An unsuitable measuring environment may produce incorrect measurement results.
Using the sensors without the use of suitable flow fittings will lead to incorrect measurement results.
In order to ensure error-free measurements, the sensors must be installed in suitable flow fittings,
see chapter 4.2 "Combination fitting (type 202811/10)", Page 19 or chapter 4.3 "Flow fitting for mem-
brane-covered sensors (type 202811/30)", Page 22.
NOTICE!
The membranes may be damaged by high pressure.
Operating the sensors with increased pressure may cause the membranes to rip.
The sensors should be operated under as little pressure as possible, with the measurement media
able to flow freely. If this is not possible, the sensors can be operated under a constant pressure
according to the specifications in chapter 11 "Technical data", Page 51. Fluctuations in pressure
must be avoided.
NOTICE!
Air bubbles may lead to incorrect measurement results.
The presence of air bubbles in the measurement medium in front of the membrane may produce incor-
rect measurement results.
In order to ensure error-free measurements, the measurement media must be free of air bubbles.
NOTICE!
Interruptions in the voltage supply may produce incorrect measurement results.
An interruption in the voltage supply (e.g. in interval operation) may produce incorrect measurement re-
sults. The sensors require a settling time period to determine the correct measurement.
In order to ensure error-free measurements, the sensors and transmitters must be permanently sup-
plied with voltage, even in interval operation.
NOTICE!
Dry electrolytes may produce incorrect measurement results.
If there is no medium to measure when the membrane cap is filled, a build-up of salt on the inside of the
membrane may cause incorrect measurement results.
For sensors with electrolyte-filled membrane caps, the sensor fittings should be prevented from
draining or dry running.
NOTICE!
Deposits on the membrane may lead to incorrect measurement results.
If there is no disinfectant (chlorine dioxide or ozone) in the measurement medium for more than 24 hours,
this will lead to incorrect measurement results due to deposits (biofilm) on the membrane.
Avoid operating the sensors with measurement medium which does not contain a disinfectant. After
operation in a disinfectant-free medium, a settling time period is to be expected. The dosing may
need to be switched on after a delay.

4 Mounting
18
NOTICE!
Impurities may produce incorrect measurement results.
Using the sensors to measure media containing oxidants, reducing agents or corrosion protection agents
may lead to incorrect measurement results.
Oxidizing agents, reducing agents, corrosion inhibitors, and substances which result in cross sensi-
tivities with the sensors (see information in chapter 11 "Technical data", Page 51) must be avoided
in the measurement medium.
NOTE!
If no disinfectant is dosed over a long period of time, the sensors must be disconnected from the trans-
mitter/controller, removed and stored correctly; please refer to chapter 9.4 "Storage", Page 45.

19
4 Mounting
4.2 Combination fitting (type 202811/10)
4.2.1 Mounting the combination fitting
The combination fitting can be mounted on a wall or an installation panel with the mounting holes (1)
using two commercially available M5 cylinder head screws (dia. 5.5 mm, countersink according to DIN
974-1: dia. 11 mm, 5 mm deep, not included in the scope of delivery).
(1) Mounting hole for cylinder head screws M5 (dia. 5.5 mm; countersink: dia. 11 mm, 5 mm deep)
(2) Valve insert for flow control
(3) Inductive proximity sensora(flow monitoring), M12 x 1 thread
(4) Floating body for flow monitoringa
(5) Sealing screw M8
(6) Extension for M8 sealing screw
(7) Sealing screw G 3/8
(8) Mounting closed with dummy plug for pH/Redox sensor with Pg 13.5 thread
(9) Mounting for membrane-covered sensor with dia. 25 mm
(10) Hose connection for measuring water outflow, connection G 1/4, for hose 6 × 8
(inner dia. 6 mm, outer dia. 8 mm)
(11) M8 ground roda
(6)
(7)
(8) (8)
(10)
(13)
(11)(12)(14)(15)
(9)

4 Mounting
20
4.2.2 Installing the sensor
Overview
(12) Sealing screw G 1/4 (opening for optional mini ball valve for sampling)
(13) Indicator for sensor immersion depth
(14) Temperature probea
(15) Hose connection for measuring water inflow, connection to fitting G 1/4,
for hose 6 × 8 (inner dia. 6 mm, outer dia. 8 mm)
aoptionally
(1) Mounting for pH/Redox sensors (7) Pressure ring
(2) Pg 13.5 pressure screw (8) Stepped collar
(3) Mount for membrane-covered sensor (9) O-ring
(4) Union nut (10) Mark for sensor immersion depth
(5) Membrane-covered sensor (11) Mark for floating body height
(6) Sensor groove
(8)
(7)
(9)