Reiss TARAsys MT10-CL User manual

Operating Instructions
TARAsys
Measuring Board MT10
April 2021 (EN)
V0

Table of contents
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Table of contents
1Information about these Operating Instructions.................................4
1.1 Symbols and displays ................................................................4
1.2 Related documents....................................................................5
2Information about this product ............................................................7
2.1 Product description....................................................................7
2.2 Scope of supply.........................................................................8
2.3 Product overview .......................................................................9
3Safety ..................................................................................................11
3.1 Proper usage...........................................................................11
3.2 Qualification of the operating staff............................................11
3.3 Alteration and modifications .....................................................11
3.4 Residual risks ..........................................................................12
4Installation...........................................................................................14
5Putting the measuring board into service.........................................16
5.1 Installation requirements..........................................................16
5.2 Preparation of the electrolysis cell............................................16
5.3 Preparation of the sensor.........................................................19
5.4 Inserting the sensor into the flow chamber................................19
5.5 Inserting the electrolysis cell into the flow chamber...................20
5.6 Putting the flow chamber into service.......................................22
5.7 Flow control.............................................................................22
5.8 Taking measuring water samples.............................................22
5.9 Electrical connection of sensor and electrolysis cell..................22
6Operation of the controller.................................................................23

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6.1 Process display........................................................................23
6.2 Diagram...................................................................................24
6.3 Login as master .......................................................................26
6.4 Setting the time for the disinfection sensor ...............................26
6.5 Connecting the sensor with the controller.................................27
6.6 Controller settings that must not be changed............................28
7Calibration...........................................................................................30
8Removal ..............................................................................................32
9Maintenance of the electrolysis cell...................................................32
9.1 Maintenance overview .............................................................32
9.2 Replacement of electrolyte and membrane cap........................32
10 Troubleshooting .................................................................................34
10.1 Special tests............................................................................35
11 Disassembly and storage...................................................................35
11.1 Measuring board......................................................................35
11.2 Electrolysis cell ........................................................................35
11.3 Sensor.....................................................................................36
12 Disposal ..............................................................................................36
13 Warranty..............................................................................................36
14 Liability disclaimer..............................................................................37

Information about these Operating Instructions
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1 Information about these Operating Instructions
1.1 Symbols and displays
1.1.1 Safety instructions and warnings
In these Operating Instructions, the warning signs and signal words listed
below are used. They help you to safely handle the product, prevent
injuries to the operating staff and protect the owner against property
damage and additional costs.
Signal word Meaning
DANGER! DANGER refers to a hazard with a high risk
level, which, if not avoided results in death or
severe injury.
DANGER! This sign indicates that there is a risk of
personal injury caused by electric shock if no
appropriate safety precautions are taken.
WARNING! WARNING refers to a hazard with a medium
risk level, which, if not avoided might result in
death or severe injury.
CAUTION! CAUTION refers to a hazard with a low risk
level, which, if not avoided might result in minor
or moderate personal injury.
NOTICE NOTICE warns against property damage.
Tab. 1: Signal words

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1.1.2 Displays used in the text
Symbol Meaning
This symbol is the general warning sign and warns
you of risks of injury. Observe all instructions marked
by this warning sign.
This symbol indicates tips and helpful information for
optimum and economic use of the product.
This symbol indicates actions to be performed by the
personnel.

This symbol indicates the result of an action.
This symbol indicates individual bullet points.
This symbol indicates a prerequisite for the
performance of an action.
Tab. 2: Symbols and displays used in the text
1.2 Related documents
You can find the data sheets for the measuring board and the electrolysis
cell at the following internet address:
https://reiss-gmbh.com/?lang=en
You can find the data sheet for the inductive proximity switch at the
following internet address:
https://reiss-gmbh.com/?lang=en
You can find the data sheets and operating instructions for the sensor at
the following internet address:
https://reiss-gmbh.com/?lang=en
You can find the data sheets and operating instructions for the controller
“Aquis touch S” at the following internet address:
https://en.jumo.de/

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You can find the data sheet for the solenoid valve at the following internet
address:
www.landefeld.de\en, MO 214 ES 24V=
The data sheet for the power supply unit is comprised in the scope of
supply.

Information about this product
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2 Information about this product
2.1 Product description
The measuring board of the TARAsys MT10-CL product line is suitable
for measuring chlorine dissolved in water and used as a disinfectant. The
areas of application are reverse osmosis systems and drinking water
applications.
In combination with the TARAline CP4.0H-M4c sensor, the measuring
board is suitable for verifying the absence of chlorine or for continuous
measurement of lowest chlorine concentrations.
Permanent operation in chlorine-free water is made possible through the
use of a miniaturised electrolysis cell specially designed to keep the
sensor free from biofilms in the phases without chlorine. For this purpose,
the disinfectant generated by the electrolysis cell is applied to the sensor
on a daily basis. This happens automatically through the closing of a
solenoid valve which stops the flow of the measuring water and thus
allows the diffusion of the disinfectant generated from the electrolysis cell
to the sensor.
A major advantage of this type is that no disinfectant has to be present in
the measuring water and thus the dosage of the disinfectant is not
necessary either.
The measuring board has been designed for the use of sensors with
retaining ring (65 mm).
Please specify when ordering your sensor.
In general, a complete measuring and control system is comprised of the
following components:
Sensor
Electrolysis cell
Measuring board
Dosing device
Analysis instruments

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These Operating Instructions exclusively refer to the measuring
board equipped with the electrolysis cell.
Comply with the operating instructions of the peripheral devices.
2.1.1 Measurand
In combination with the TARAline CP4.0H-M4c sensor, the measuring
board measures the concentration of total chlorine in the measuring
water, i.e. the concentration resulting from the addition of inorganic
chlorine products (e.g. chlorine gas, sodium hypochlorite solution,
calcium hypochlorite solution.
The following kinds of chlorine are recorded:
“Free chlorine” from inorganic chlorination products (chlorine gas,
hypochlorite, etc.)
“Bound chlorine”, chloramine.
2.2 Scope of supply
Keep the complete packaging.
Send in the measuring board in its original packaging if it needs to be
repaired or in case of claims on warranty.
Check the package and its contents for completeness and integrity
upon receipt.
In case of damage:
Notify the supplier.
Component Number
Measuring board 1
Electrolysis cell 1
Operating Instructions 1
Tab. 3: Scope of supply

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2.3 Product overview
2.3.1 Measuring board
Fig. 1: Product overview
1 Controller
2 Solenoid valve
3 Flow chamber
4 Sensor1
5 Electrolysis cell2
6 Sampler
7 Flow control
8 Measuring water inlet
9 Measuring water outlet
10 Inductive proximity switch
1Not included in the scope of supply.
2For product overview see Chapter 2.3.2

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2.3.2 Electrolysis cell
Fig. 2: Product overview
1 Electrical connection
2 Electrode body
3 Anode
4 O-ring 14 x 1.8
5 Valve opening
6 Membrane disk
7 O-ring 25 x 2.5
8 Hose rings (x2)
9 Membrane cap
10 Cathode
11 Electrode finger
12 O-ring 25 x 2.5

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3 Safety
The measuring board was manufactured to the state of the art.
However, improper handling entails the following risks:
Personal injury and damage to property
Injury to health
Wrong measuring values which may lead to dangerous dosing errors
of the disinfectant.
Comply with the safety instructions provided in these Operating
Instructions.
3.1 Proper usage
The measuring board is used for measuring the concentration of a
specific disinfectant in water.
The measuring board must only be used under the following conditions:
For the disinfectant specified in the data sheet of the sensor used
Under the operating conditions specified in the associated data sheet
Only for the activities described in these Operating Instructions
Usage of the board in perfect condition only
Use of original accessories and spare parts (see https://www.reiss-
gmbh.com)
3.2 Qualification of the operating staff
The operator of the board must have the following qualifications:
He/she has read and understood the Operating Instructions.
He/she has received training in how to handle the measuring board.
3.3 Alteration and modifications
Any interventions and changes which can affect the safety and
functionality of the measuring board must only be performed by the
manufacturer.

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3.4 Residual risks
3.4.1 Loosening of the screw fittings
If not properly fastened, the screw fitting can work loose due to the water
pressure or due to vibration. This results in the following risks:
The electrolysis cell is pulled out of the flow chamber due to the water
pressure.
Screw fittings work loose and measuring water leaks.
Ensure that the screw fittings cannot work loose during operation.
Check the fittings for tightness at regular intervals.
Minimise vibrations.
3.4.2 High or fluctuating pressure
If the water pressure exceeds the maximum admissible value or
fluctuates considerably, this may result in the following risks:
The membrane of the electrolysis cell will be damaged.
Screw fittings work loose and measuring water leaks.
Observe the maximum admissible pressure according to the data
sheet (see Chapter 1.2, p. 5).
Keep the pressure constant.
3.4.3 Abrasive particles
Abrasive particles can damage the membrane of the electrolysis cell.
Install a filter upstream of the measuring board.
3.4.4 Blows, shocks and improper handling
Blows or concussions, e.g. when the device is dropped, can damage the
measuring board and the electrolysis cell.
Avoid blows and shocks.
Make sure not to drop the measuring board and the electrolysis cell.
3.4.5 Defective membrane cap
If the valve is inadvertently blocked when the membrane cap of the
electrolysis cell is screwed on or off, this can lead to overpressure or

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underpressure in the membrane cap. This can damage the membrane
cap.
When screwing on the membrane cap, make sure that the valve is
not pressed shut (see Chapter 5.2, page 16).
Before screwing the membrane cap off, pull the hose ring to the side
and keep the valve open (see Chapter 9.2, page 32).
3.4.6 Risks due to electric power
DANGER! Related data sheets and operating instructions
must be complied with (see Chapter 1.2, p. 5)
3.4.7 Failure of the measurement when the sensor is
disassembled
When the measuring value fails during the disassembly of the sensor,
this may lead to the incorrect dosing of the disinfectant.
Shut off the measuring and control system or switch to manual
operation.
3.4.8 Temperature and temperature fluctuation
If the temperature of the medium or the ambient temperature is outside
the admissible range, this can damage the measuring board and the
electrolysis cell.
Ensure that the admissible temperature ranges are adhered to in all
operating phases (see Chapter 1.2, p. 5).
3.4.9 Inadmissible installation
If the measuring board is not mounted in a perpendicular position, this
may lead to incorrect measuring values.
Mount the measuring board in a perpendicular position.

Installation
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4 Installation
DANGER! Never install or disassemble the measuring board
when it is energised! There is the risk of electric
shock.
De-energise the entire system before performing
any work. This kind of work must only be performed
by skilled staff.
Never install the device in potentially explosive
atmospheres. There is an explosion hazard.
Mount the measuring board in a perpendicular position, e.g.
on a mounting plate or on a wall.

Installation
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Fig. 3: Dimensions
Connect the board to the electric mains (observe Chapter 1.2,
p. 5).
Close the flow control valve
Connect the measuring water inlet and measuring water outlet
The measuring water outlet must be depressurised.

Putting the measuring board into service
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5 Putting the measuring board into service
The measuring board has been mounted and connected to the
electric mains (see Chapter 4, p. 14).
5.1 Installation requirements
The following installation requirements must be met:
Permanent power supply and presence of measuring water
Flow rate as specified in the data sheet of the sensor
Constant flow rate
Disinfectant must be present in the measuring water for calibration.
Ensure that the measuring water does not outgas at the measuring
point.
5.2 Preparation of the electrolysis cell
Unscrew the membrane cap [2] from the electrode body [1].
Fig. 4: Screwing off the membrane cap
1 Electrode body
2 Membrane cap

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Ensure that the 2 hose rings are in the correct position (see Fig. 5,
p. 17).
Fig. 5: Position of the rings
Place the membrane cap on a clean mat.
Fill the membrane cap of the electrolysis cell up to the rim with
electrolyte EEZ1.0/W.
Fig. 6: Filling the membrane cap
The electrolyte EEZ1.0/W for the electrolysis cell must not be mixed
up with the electrolyte for the sensor. When the sensor electrodes
come into contact with the electrolyte EEZ1.0/W, the sensor loses its
function.
Pay attention to the correct allocation of the electrolytes.

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Place the electrode body [1] perpendicularly onto the membrane cap
[2].
Turn the electrode body in anti-clockwise direction until the thread is
locked in place.
Fig. 7: Placing the electrode body onto the membrane cap
1 Electrode body
2 Membrane cap
Slowly screw the electrode body into the membrane cap.
Ensure not to press the valve opening shut (e.g. with your fingers).
The first resistance felt during screwing on comes from the O-ring
seal.
Continue screwing the cap on until it touches the shaft.
Push the second hose ring over the first hose ring in the groove.
After the membrane cap has been completely screwed on:
Do not touch the membrane or knock against it.
Wash off any remainders of electrolyte on the outside of the
electrolysis cell with tap water.
The electrolysis cell is now ready for being put into service.

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Fig. 8: Prepared electrolysis cell
5.3 Preparation of the sensor
The sensor has to be prepared for installation in compliance with the
applicable Operating Instructions (see Chapter 1.2, p. 5).
5.4 Inserting the sensor into the flow chamber
The measuring board has been mounted and connected to the
electric mains (see Chapter 4, p. 14).
The flow chamber is pressureless.
The sensor has been prepared (see Chapter 5.3, p. 19).
Remove the screw fitting [2] from the flow chamber [8].
Check the retaining ring [3], sliding ring [4] and O-ring 25 x 2.5 [5] for
proper position on the sensor [1].
Check the O-ring support [6] and the O-ring 30 x 2.6 [7] for proper
position in the flow chamber.
Slowly push the sensor into the flow chamber.
Carefully push the screw fitting over the sensor.
Tightly fasten the screw fitting.

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Fig. 9: Inserting the sensor with retaining ring
1 Sensor 5 O-ring 25 x 2.5
2 Screw fitting 6 O-ring support
3 Retaining ring 7 O-ring 30 x 2.6
4 Sliding ring 8 Flow chamber
The sensor has been inserted into the flow chamber.
5.5 Inserting the electrolysis cell into the flow
chamber
The electrolysis cell has been prepared (see Chapter 5.2, p. 16).
The sensor has been installed (see Chapter 5.4, p. 19).