JUMO tecLine ClO2 / JUMO tecLine O3
Sensors for chlorine dioxide and ozone
Type 202634/45, type 202634/46
type 202634/50, type 202634/51
B 202634.0
Operating manual
2012-07-13/00585740
Screws coated with threadlocking paint must not be adjusted! The
threadlocking paint must not be damaged. If it is, claims under the
warranty will not be honored!
Contents
1 Typographical conventions ...................................................... 5
1.1 Warning signs ..............................................................................................5
1.2 Note signs ....................................................................................................5
2 General ....................................................................................... 6
2.1 Preface .........................................................................................................6
2.2 Scope of application ....................................................................................6
2.3 Output signal ................................................................................................6
3 Device identification ................................................................. 7
3.1 Nameplate ....................................................................................................7
3.2 Order details .................................................................................................7
4 Description ................................................................................ 8
4.1 Scope of delivery .........................................................................................8
4.2 Sensor for chlorine dioxide - type 202634/45 ..............................................8
4.3 Sensor for chlorine dioxide - type 202634/46
(resistant to chemicals and surfactants) ......................................................8
4.4 Sensor for ozone - type 202634/50 .............................................................8
4.5 Sensor for ozone - type 202634/51
(resistant to chemicals and surfactants) ......................................................9
4.6 Details ..........................................................................................................9
4.7 Technical data ............................................................................................11
5 Mounting .................................................................................. 13
5.1 Notes ..........................................................................................................13
5.2 Flow-through fitting (part no. 00392611) ...................................................14
5.3 Flow monitoring .........................................................................................16
6 Electrical connection .............................................................. 17
6.1 Sensor for chlorine dioxide or ozone .........................................................17
6.2 Flow monitor ..............................................................................................18
6.3 Example of a measurement section ...........................................................19
7 Startup ..................................................................................... 21
7.1 Screwing the membrane cap off and on ....................................................21
7.2 Topping up reference electrolyte ...............................................................21
Contents
8 Maintenance ............................................................................ 27
8.1 Cleaning the electrode finger tip / replacing the membrane cap and
electrolyte ...................................................................................................27
8.2 Remove scale that has accumulated on the membrane cap ....................28
8.3 Storage / transport .....................................................................................28
8.4 Consumables / accessories .......................................................................29
9 Calibration ............................................................................... 30
9.1 General .......................................................................................................30
9.2 Calibration with a indicator/control instrument ..........................................30
10 Eliminating errors and faults .................................................. 32
1.1 Warning signs
Caution
This sign is used when there may be danger to personnel if the instructions
are ignored or not followed correctly!
Attention
This sign is used when there may be damage to equipment or data if the
instructions are ignored or not followed correctly!
1.2 Note signs
Note
This sign is used to draw your attention to something of special importance.
1 Typographical conventions
1
abc
✱ Action instruction
Footnote
Footnotes are remarks that refer to specific points in the text. Footnotes
consist of two parts:
Identification marking in the text and the footnote text.
The identification markings in the text are arranged as sequential superscript
numbers.
This sign indicates that an action to be performed is described.
The individual steps are marked by this asterisk.
Example:
✱ Press key.
5
2 General
2.1 Preface
Please read this operating manual before placing the device in operation.
Keep the operating manual in a place which is accessible to all users at all
times.
Danger:
Sudden failure of the sensor may result in dangerous overdosing of chlorine
dioxide or ozone. Suitable preventive measures must be in place as needed to
prevent this from happening.
Check the plant for odor of chlorine dioxide or ozone and check water for any
unusual discoloration.
2.2 Scope of application
These membrane-covered, amperometric sensors are used to measure the
concentration of chlorine dioxide and ozone (for example in drinking and
swimming water, industrial, process and cooling water).
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 for example to measure electrolytically
generated ozone.
The sensors are not suitable for detecting the absence of chlorine dioxide and
ozone.
The integrated electronics of the sensors provides a temperaturecompensated current signal of 4 to 20mA. A downstream device (indicator,
controller, recorder, PLC, etc.) is used for calibration.
2.3 Output signal
Since the measurement signal of amperometric sensors is temperaturedependent, an integrated NTC resistor is provided for automatic temperature
compensation. The recommended temperature ranges are as follow
- For sensors of types 202634/45 and 202634/50): +5 to +45 °C.
- For sensors of types 202634/46 and 202634/51): +5 to +50 °C.
The integrated electronics of the sensors provides a current signal of 4 to
20 mA.
A downstream device (indicator, controller, recorder, PLC, etc.) is used for
calibration.
The sensors can be connected directly to a suitable indicator and controller.
The JUMO AQUIS 500 AS indicator/controller (type sheet 202568) and the
JUMO dTRANS AS 02 indicator/controller (type sheet 202553) are especially
suitable for combining with these sensors. They provide the voltage required
for the power supply of the sensor and make for an easy way to calibrate the
measuring system.
6
3.1 Nameplate
Sensor for chlorine dioxide
Type: 202634/45-20
Measuring range: 0.00 to 2.00 mg/l
F No. 00000000 00 0 1226 0005
Serial No.: 01 01 0002
JUMO tecLine ClO2
JUMO GmbH & Co. KG
Fulda, Germany
www.jumo.net
Note:
The date of manufacture is encoded in the "F No." (manufacturing number):
1226 signifies: year of manufacture 2012 / calendar week 26.
3.2 Order details
(1) Basic type
202634 Sensor
3 Device identification
(2) Basic type extension
45 for chlorine dioxide
46 for chlorine dioxide (resistant to chemicals and surfactants)
50 for ozone
51 for ozone (resistant to chemicals and surfactants)
(3) Measuring range
o o 10 0.00 to 0.50 mg/l (ppm)
oooo 20 0.00 to 2.00 mg/l (ppm)
25 0.00 to 5.00 mg/l (ppm)
35 0.00 to 10.00 mg/l (ppm)
o o 37 0.00 to 20.00 mg/l (ppm)
(1) (2) (3)
Order code /-
Order example 202634 / 45 - 20
7
4 Description
4.1 Scope of delivery
Two-wire sensor with membrane cap, electrolyte and special abrasive paper
for cleaning the electrode finger.
4.2 Sensor for chlorine dioxide - type 202634/45
This sensor features a membrane-covered, amperometric 2-electrode
measuring system.
The membrane of this sensor is made of hydrophobic, microporous PTFE
material. These sensors should only be used in water with drinking or
swimming pool quality. The water should not under any circumstances contain
surfactants (many cleaning agents and disinfectants contain surfactants).
Surfactants will eliminate the hydrophobic properties of the membrane. Then
proper functioning can no longer be guaranteed.
The membrane cap that seals off the electrode space is filled with an aqueous
electrolyte containing alkali halides.
The working electrode (cathode) is made of gold (Au). The anode, which
performs the function of a combined reference electrode and counter
electrode, is made of silver (Ag) fitted with a coating of silver halide (AgHal).
The sensor for chlorine dioxide can be used to measure chlorine dioxide from
chlorite/chlorine and chlorite/hydrochloric acid plants.
4.3 Sensor for chlorine dioxide - type 202634/46 (resistant to chemicals and surfactants)
The sensor measures chlorine dioxide from chlorite/chlorine plants and
chlorite/hydrochloric acid plants.
4.4 Sensor for ozone - type 202634/50
This sensor features a membrane-covered, amperometric 2-electrode
measuring system.
The membrane of these sensors is made of hydrophobic, microporous PTFE
material. This sensor should only be used in water with drinking or swimming
pool quality. The water should not under any circumstances contain
surfactants (many cleaning agents and disinfectants contain surfactants).
Surfactants will eliminate the hydrophobic properties of the membrane. Then
proper functioning can no longer be guaranteed.
The membrane cap that seals off the electrode space is filled with an aqueous
electrolyte containing alkali chlorides.
The working electrode (cathode) is made of gold (Au). The anode, which
performs the function of a combined reference electrode and counter
electrode, is made of silver (Ag) fitted with a coating of silver halide (AgHal).
The sensor for ozone can be used to measure electrolytically generated
ozone.
8
4.5 Sensor for ozone - type 202634/51
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(resistant to chemicals and surfactants)
This sensor measures ozone, for example electrolytically generated ozone
). This sturdy sensor can be used in all water qualities.
(O
3
4.6 Details
4.6.1 Types 202634/45 and 202634/50
4 Description
(1) Pg screw connection
(2) Cover
(3) O-ring
(4) 2-pin terminal for measuring cable connection
(5) Electrode shaft with integrated electronics
(6) O-ring
(7) Electrode finger (reference electrode)
(8) Measurement electrode
(9) Transparent cover
(10) Membrane cap
(11) PTFE membrane
(12) Valve opening
9
4 Description
(1)
(2)
(3)
(4)
(5)
(7)
(8)
(9)
(10)
(11)
(13)
(14)
(12)
(6)
Attention:
- This measurement is only possible in a suitable flow-through fitting
(part no. 00392611).
- The process medium must be similar in quality to drinking or swimming
pool water.
- The sample medium must not contain any surfactants (surface-active
substances, for example those in cleaning agents, detergents and
disinfectants).
- The process medium must not contain any hydrophobic substances
(for example oils and greases).
4.6.2 Types 202634/46 and 202634/51
10
(1) Pg screw connection
(2) Cover
(3) O-ring
(4) 2-pin terminal for measuring cable connection
(5) Electrode shaft with integrated electronics
(6) Counter electrode (stainless steel)
(7) O-ring
(8) Electrode finger (reference electrode)
(9) Measurement electrode
(10) Transparent cover
(11) Membrane cap
(12) Membrane holder (stainless steel)
(13) Membrane
(14) Valve opening
4.7 Technical data
≤
UB – 7.5 V
0.02A
4.7.1 Types 202634/45 and 202634/50
4 Description
Analyte Chlorine dioxide (ClO2)Ozone (O
Membrane type Hydrophobic PTFE membrane
Measuring cable connection 2-pin terminal, polyamide PG7 screw connection; conductor cross section 2x 0.25 mm
Voltage supply U
Electromagnetic
compatibility
Output signal 4to20mA
Burden
Settling time 1h 2h
Incident flow velocity approx. 15cm / s
Measuring ranges
(other ranges on
request)
Resolution 0.001mg / l, for measurement range 0 to 0.5mg/l;
Response time t
Operating temperatures /
temperature compensation
Zero point adjustment Not required
pH value operating range 1to11pH 2to11pH
pH dependency
(loss of slope)
Disruptive substances /
cross sensitivities
Pressure resistance p
Material Shaft, cover, cap: PVC Shaft, cover, cap: PVC
Dimensions Diameter: 25 mm, length: 220 mm
Weight approx 125 g
Maintenance
90
Check the measurement signal:regularly, at least once a week
0to2.0/0to5/0to10mg/l (ppm)
Type 202634/45 Type 202634/50
12 to 30V DC (electrical isolation recommended)
B
Interference immunity: To industrial requirements
If the sensor is installed in a JUMO flow-through fitting 00392611,
this is equivalent to a flow rate of about 30l / h.
approx. 15 s approx. 15 s
+5 to +45 °C +5 to +45 °C
Chlorine is disruptive
Ozone is disruptive
No pressure fluctuations are admissible when operating under pressure.
0.01mg / l, for measurement range 0 to 2.0mg / l
We recommend unpressurized operation (atmospheric pressure).
According to EN 61326-1
Interference emission: Class B
No pH dependency
max. 2 bar
abs
p
max. 1 bar
rel
0to0.5/0to2.0/0to5/ 0to10
mg / l (ppm)
Chlorine is disruptive
Chlorine dioxide is disruptive
)
3
2
, cable diameter approx. 4 mm
Replace the membrane cap:once a year (subject to water quality)
Change the electrolyte: every 3 to 6 months
Storage
Sensor: frost-free, dry and without electrolyte, can be stored for an unlimited time at
+5 to +45 °C
Membrane cap: Used membrane caps cannot be stored!
Electrolyte: In the original bottle and protected against sunlight at +5 to +25 °C
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