Endress+Hauser Flowfit CYA27 User manual

Products Solutions Services
Operating Instructions
Flowfit CYA27
Modular flow assembly for multiparameter
measurements
BA02059C/07/EN/02.21
71511599
2021-01-07

Flowfit CYA27 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 4
1.1 Warnings ............................ 4
1.2 Symbols used .......................... 4
2 Basic safety instructions ............ 5
2.1 Requirements for personnel ............... 5
2.2 Designated use ........................ 5
2.3 Workplace safety ....................... 5
2.4 Operational safety ...................... 6
2.5 Product safety ......................... 6
3 Product description ................. 7
3.1 Product design ......................... 7
4 Incoming acceptance and product
identification ..................... 10
4.1 Incoming acceptance ................... 10
4.2 Product identification ................... 10
4.3 Scope of delivery ...................... 11
4.4 Certificates and approvals ............... 11
5 Installation ....................... 12
5.1 Installation conditions .................. 12
5.2 Mounting the assembly ................. 15
5.3 Mounting assembly in the process ......... 18
5.4 Flow switch and status indication light
(optional) ........................... 22
5.5 Installing sensor in assembly ............. 25
5.6 Connecting optional accessories ........... 27
5.7 Post-installation check .................. 27
6 Commissioning .................... 28
6.1 Function check ....................... 28
6.2 Switching on the device ................. 28
7 Operation ......................... 29
7.1 Adapting the measuring device to the process
conditions ........................... 29
7.2 Sampling ............................ 30
8 Diagnostics and troubleshooting ... 32
8.1 General troubleshooting ................. 32
8.2 Faults in the assembly and process
integration .......................... 32
9 Maintenance ...................... 33
9.1 Maintenance schedule .................. 33
9.2 Maintenance tasks ..................... 34
9.3 Disassembly (for conversion, cleaning etc.) ... 39
10 Repair ............................ 41
10.1 Spare parts .......................... 41
10.2 Return .............................. 42
10.3 Disposal ............................ 42
11 Accessories ....................... 43
11.1 Device-specific accessories ............... 43
12 Technical data .................... 45
12.1 Power supply ......................... 45
12.2 Performance characteristics .............. 45
12.3 Environment ......................... 45
12.4 Process ............................. 46
12.5 Mechanical construction ................ 47
Index .................................. 48

About this document Flowfit CYA27
4 Endress+Hauser
1 About this document
1.1 Warnings
Structure of information Meaning
LDANGER
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation will result in a fatal or serious
injury.
LWARNING
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation can result in a fatal or serious
injury.
LCAUTION
Causes (/consequences)
If necessary, Consequences of
non-compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more serious injuries.
NOTICE
Cause/situation
If necessary, Consequences of
non-compliance (if applicable)
‣Action/note
This symbol alerts you to situations which may result in damage to
property.
1.2 Symbols used
Symbol Meaning
Additional information, tips
Permitted or recommended
Not permitted or not recommended
Reference to device documentation
Reference to page
Reference to graphic
 Result of a step
1.2.1 Symbols on the device
Symbol Meaning
Reference to device documentation
Flow direction

Flowfit CYA27 Basic safety instructions
Endress+Hauser 5
2 Basic safety instructions
2.1 Requirements for personnel
• Installation, commissioning, operation and maintenance of the measuring system may
be carried out only by specially trained technical personnel.
• The technical personnel must be authorized by the plant operator to carry out the
specified activities.
• The electrical connection may be performed only by an electrical technician.
• The technical personnel must have read and understood these Operating Instructions
and must follow the instructions contained therein.
• Faults at the measuring point may only be rectified by authorized and specially trained
personnel.
Repairs not described in the Operating Instructions provided must be carried out only
directly at the manufacturer's site or by the service organization.
2.2 Designated use
The assembly is specially designed to hold sensors. This includes in particular membrane-
covered disinfection sensors, e.g. Memosens CCS51D and 12 mm sensors with Pg 13.5
thread adapters and 120 mm installation length, such as pH or ORP sensors, oxygen
sensors and conductivity sensors. Thanks to its design, it can be operated in pressurized
systems.
Use of the device for any purpose other than that described, poses a threat to the safety of
people and of the entire measuring system and is therefore not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Workplace safety
As the user, you are responsible for complying with the following safety conditions:
• Installation guidelines
• Local standards and regulations

Basic safety instructions Flowfit CYA27
6 Endress+Hauser
2.4 Operational safety
Before commissioning the entire measuring point:
1. Verify that all connections are correct.
2. Ensure that electrical cables and hose connections are undamaged.
3. Do not operate damaged products, and protect them against unintentional operation.
4. Label damaged products as defective.
During operation:
‣If faults cannot be rectified:
products must be taken out of service and protected against unintentional operation.
2.5 Product safety
2.5.1 State-of-the-art technology
The product is designed to meet state-of-the-art safety requirements, has been tested, and
left the factory in a condition in which it is safe to operate. The relevant regulations and
international standards have been observed.

Flowfit CYA27 Product description
Endress+Hauser 7
3 Product description
3.1 Product design
The Flowfit CYA27 is a modular assembly designed for operating sensors for liquid
analysis with continuous flow of medium. The sensors are placed in specially adapted
modules. Due to its modular design, the assembly is flexible in terms of the number and
type of sensor slots.
For additional functions, the assembly can be fitted with optional accessories, e.g.:
• Status indication light to indicate the operating status
• Flow switch for monitoring the flow
• Sampling valve for direct sampling at the assembly.
7
8
10
1
2
3
4
5
6
9
12
11
13
14
A0043472
1 Process adapter inlet (internal thread G 1/4") and hose connection (optional)
2 Inlet module
3 Module for holding a disinfection sensor with 25 mm diameter
4 Disinfection sensor CCS5xD, e.g. CCS51D (not included in scope of delivery)
5 Module for holding a sensor with Pg 13.5 connection, e.g. a pH sensor
6 pH sensor, e.g. CPS31D (not included in scope of delivery)
7 Module for holding the conductivity sensor CLS82D with Pg 13.5 connection
8 Conductivity sensor, e.g. CLS82D (not included in scope of delivery)
9 Flow module
10 Flow switch (optional)
11 Outlet module
12 Process adapter outlet (internal thread G 1/4") and hose connection (optional)
13 Status indication light (optional)
14 Sampling valve (optional)

Product description Flowfit CYA27
8 Endress+Hauser
A0043433
Module for disinfection sensors
• Medium flows to sensor from below
• Sensor slot for 25 mm sensors
• Sensor secured via pressure screw M35x2
• Sensors: CCS5x(D)
• Flow options
• 5 l/h (1.1 gal/h)
• 30 l/h (6.6 gal/h)
• Optional function: sampling valve (see diagram)
A0043434
Module for pH, ORP or oxygen sensors
• Medium flows to sensor from above
• Sensor slot for 12 mm sensors in 120 mm length
• Sensor installation via Pg 13.5 thread
• Sensors: →  43
A0043431
Flow module
• Flow display/monitoring
• Flow must come from below
• Flow options
• 5 l/h (1.1 gal/h)
• 30 l/h (6.6 gal/h) (identified by a blue distancing ring)
• Optional functions
• Flow switch
• Status indication light
The flow module, if used, must be the last module upstream from the
outlet module in order to guarantee flow through all modules.

Flowfit CYA27 Product description
Endress+Hauser 9
A0043432
Module for conductivity sensor CLS82D
• Medium flows to sensor from below
• Adapter for sensor CLS82D (12 mm sensor with Pg 13.5 thread in 120 mm
length)
• Optional function: sampling valve (not shown here)
A0043430
Dosing module
• Connection for supplying a liquid for acidification (pH reduction) or
cleaning purposes
• Connection: hose nipple 3 mm (0.12 in) on dosing plug Pg 13.5
suitable for hoses with internal diameter (ID) 1.6 mm (0.06 in), outer
diameter (OD) 4.8 mm (0.19 in) (hose and hose clip not included in scope
of delivery)
• Medium flows through module from above
The dosing module, if used, should be the first module downstream
from the inlet module. An exception to this is conductivity
measurement, which could be falsified by the type of liquid added. In
this case, the dosing module should be installed as the second module
downstream from the conductivity measurement.
A0043894
Inlet module
• with needle valve (inlet valve)
• Connection G 1/4'' (ISO 228-1)
• Flow of medium from below
• Drill hole for mounting(→  15)
A0043895
Outlet module
• with needle valve (outlet valve)
• Connection G 1/4'' (ISO 228-1)
• Flow of medium from above
• Drill hole for mounting(→  15)

Incoming acceptance and product identification Flowfit CYA27
10 Endress+Hauser
4 Incoming acceptance and product
identification
4.1 Incoming acceptance
1. Verify that the packaging is undamaged.
 Notify the supplier of any damage to the packaging.
Keep the damaged packaging until the issue has been resolved.
2. Verify that the contents are undamaged.
 Notify the supplier of any damage to the delivery contents.
Keep the damaged goods until the issue has been resolved.
3. Check that the delivery is complete and nothing is missing.
 Compare the shipping documents with your order.
4. Pack the product for storage and transportation in such a way that it is protected
against impact and moisture.
 The original packaging offers the best protection.
Make sure to comply with the permitted ambient conditions.
If you have any questions, please contact your supplier or your local Sales Center.
4.2 Product identification
4.2.1 Nameplate
The nameplate provides you with the following information on your device:
• Manufacturer identification
• Order code
• Extended order code
• Serial number
• Ambient and process conditions
• flow
• Safety information and warnings
‣Compare the information on the nameplate with the order.
4.2.2 Product identification
Product page
www.endress.com/cya27
Interpreting the order code
The order code and serial number of your product can be found in the following locations:
• On the nameplate
• In the delivery papers
Obtaining information on the product
1. Go to www.endress.com.
2. Call up the site search (magnifying glass).
3. Enter a valid serial number.
4. Search.
 The product structure is displayed in a popup window.

Flowfit CYA27 Incoming acceptance and product identification
Endress+Hauser 11
5. Click on the product image in the popup window.
 A new window (Device Viewer) opens. All of the information relating to your
device is displayed in this window as well as the product documentation.
Manufacturer's address
Endress+Hauser Conducta GmbH+Co. KG
Dieselstraße 24
D-70839 Gerlingen
4.3 Scope of delivery
The scope of delivery comprises:
• Assembly including enclosed accessories in the version ordered
• Operating Instructions
• Manufacturer's Declaration
4.4 Certificates and approvals
RL 2014/68/EU PED
The assembly has been manufactured according to good engineering practice as per Article
4, Paragraph 3 of the Pressure Equipment Directive (PED) 2014/68/EU and is therefore
not required to bear the CE label.
ADI-free
No materials or ingredients derived from animals are used during the entire production of
all the parts in contact with the process.

Installation Flowfit CYA27
12 Endress+Hauser
5 Installation
5.1 Installation conditions
5.1.1 Orientation
The assembly is designed for mounting on panels, walls, level surfaces, masts or railings.
The only permitted orientation of the assembly is horizontal, →  15.
The prescribed orientation of the assembly may limit the installation of certain
sensors. e,g, upside-down installation.
5.1.2 Installation instructions
NOTICE
Environment
‣The ambient conditions of the technical specification of the assembly and sensors must
be observed at the installation site.
‣Take technical precautions, such as installing in an additional enclosure, to protect the
measuring point from ambient or environmental influences (e.g. temperature,
pollution).
NOTICE
Direct sunlight or UV light
‣Appropriate precautions should be taken at the installation site to protect the assembly
from direct sunlight or other sources of UV radiation.
At ambient temperatures below 0 °C (32 °F), the medium temperature must be at least
5 °C (41 °F) and the supply and return lines must be insulated.

Flowfit CYA27 Installation
Endress+Hauser 13
5.1.3 Dimensions
285 (11.22)
52.5 (2.07)
212.6 ( 8.37)
221.4 (8.72)
345 (13.58) 225 (8.86)
165 (6.50) 165 (6.50)
249.5 (9.82)
155 (6.10)
Flowfit CYA27 Flowfit CYA27
Flowfit CYA27
Flowfit CYA27 Flowfit CYA27 Flowfit CYA27
ABC
D E F
60 (2.36)
A0042901
 1 Dimensions. Engineering unit: mm (in)
A Disinfection, pH and flow rate indication version with sampling valve, status indication light and flow switch
B Disinfection, pH, ORP and flow rate indication version with sampling valve, status indication light and flow
switch
C Disinfection and flow rate indication version with sampling valve, status indication light and flow switch
D Disinfection version with sampling valve
E pH, ORP or oxygen version
F Conductivity version with sampling valve
Number of modules 1 2 3 4 5 6
Width mm (in) 165 (6.50) 225 (8.86) 285
(11.22)
345
(13.58)
405
(15.94)
465
(18.31)
Weight in kg (lb)
max. weight
depending on version
without sensors
0.9 kg
(1.98 lb)
1.5 kg
(3.31 lb)
2.1 kg
(4.63 lb)
2.7 kg
(5.95 lb)
3.3 kg
(7.28 lb)
3.8 kg
(8.38 lb)

Installation Flowfit CYA27
14 Endress+Hauser
155 (6.10) 175 (6.89)
A0043194
 2 Mounting distance. Engineering unit: mm (in)
The mounting distance required to remove the sensor is 175 mm (6.9 in).

Flowfit CYA27 Installation
Endress+Hauser 15
5.2 Mounting the assembly
5.2.1 Measuring system
A complete measuring system may contain up to six different sensors and consists, for
example, of the following:
• Flowfit CYA27 flow assembly
• At least one sensor, e.g. CCS51D for measuring free chlorine
• At least one measuring cable, e.g. CYK10
• Transmitter, e.g. Liquiline CM44x or CM44xR with latest software
• Optional:
• pH sensors, e.g. Memosens CPS31D
• ORP sensors, e.g. Memosens CPS16D
• Conductivity sensor CLS82D
• Oxygen sensors, e.g. COS22D
• Transmitter, e.g. Liquiline Compact CM82
• Liquiline Mobile CML18 multi-parameter handheld instrument
• Extension cable CYK11
• Sampling valve on assembly if using modules for disinfection and conductivity
• Flow switch
• Status indication light
1
2
3
4
5
Flowfit CYA27
A0043060
 3 Example of a measuring system
1 Transmitter Liquiline CM44x or CM44xR
2 Measuring cable CYK10
3 pH sensor, e.g. CPS31D
4 Flowfit CYA27 flow assembly
5 Disinfection sensor CCS5xD (membrane-covered, ⌀25 mm), e.g. CCS51D
5.2.2 Direct wall mounting
The assembly can be screwed directly onto the wall using two holes provided in the inlet
and outlet module.
Direct mounting on the wall is permitted for assemblies with one to a maximum of
three modules.

Installation Flowfit CYA27
16 Endress+Hauser
Number of modules 1 2 3
Spacing between drill
holes
mm (in)
120 (4.73) 180 (7.09) 240 (9.45)
The mounting materials required to secure the device to the wall are not supplied.
1. Provide the mounting materials to secure the device to the wall (screws, wall plugs)
onsite.
2. Use mounting material that is suited to the wall substrate.
M6
240 (9.45)
A0043508
 4 Engineering unit: mm (in)
5.2.3 Mounting the assembly with wall holder unit
With the wall bracket, it is possible to select up to six modules. It is then possible to
remove individual modules while the rest of the assembly remains securely in the bracket.
Different drill holes allow, for example, the use of the Flowfit CCA250 hole pattern.
Optional accessories, comprising a wall bracket with securing clips for assemblies with
1 to 6 modules.
70 (2.76)
80 (3.15)
70 (2.76)
240 (9.45)
320 (12.6)
153.6 (6.05)
Ø9 (4x)
7 (0.28)
Ø9 (4x)
80 (3.15)
A0043220
 5 Dimensions of wall bracket. Engineering unit: mm (in)
The drill holes highlighted in color correspond to those of assembly CCA250, which
can be reused.

Flowfit CYA27 Installation
Endress+Hauser 17
A0043207
 6 2 securing clips for 1 to 5 modules
A0043208
 7 3 securing clips for 6 modules
With six modules, three securing clips are required for increased
stability.
1. Position the assembly in the center of the wall bracket.
2. Slide the assembly downwards on the securing clips until it clicks into place.

Installation Flowfit CYA27
18 Endress+Hauser
5.3 Mounting assembly in the process
5.3.1 General installation instructions
LCAUTION
Risk of injury from high pressure, high temperature or chemical hazards if process
medium escapes.
‣Wear protective gloves, protective goggles and protective clothing.
‣Install the assembly only in vessels or pipes that have cooled down, are empty and
unpressurized and have been rinsed.
NOTICE
If the return lines are insufficiently sized, ascending, are too long or are incorrectly
laid, there is a risk of excessive counterpressure in the assembly. This may impair or
completely disrupt the functioning of the assembly and particularly the sensors,
which may in turn cause further harm.
‣Keep return lines as short as possible and avoid unnecessary flow resistance as well as
rising pipes.
‣Return lines should be designed, dimensioned and laid in compliance with the pressure
specifications of the assembly and sensors.
‣Short return lines with an open outlet are preferable, particularly for assemblies with a
large number of modules.
• Due to its low flow rates, the assembly is not suitable for mounting directly in the
process line. It must instead be installed in a branch pipe or a bypass. It is the
responsibility of the user to select and test the appropriate type of process
connection.
• If the process pressure is above 4 bar (58 psi) relative, the use of a pressure-
reducing valve upstream from the assembly is required. The pressure-reducing
valve should be configured in accordance with the pressure specifications of the
sensors or assembly. The lower pressure here is the maximum permitted set
pressure.
• If solid particles are present in the medium, this can affect the correct function of
the assembly and sensors. It is recommended to install a particle filter/dirt trap with
a mesh size of 500 µm upstream from the assembly. Please note here that the filter
must also be maintained at regular intervals to ensure proper functioning.
• The connecting lines (pipe or hose lines) must be selected or dimensioned so that
they can withstand the process medium, temperatures and pressures. Pay attention
to the technical specification of the assembly and sensors.
• The connecting lines (pipe or hose lines) must be connected to the process
connections of the assembly without force or tension. If necessary, provide
appropriate strain relief devices.
• Prior to installation, check the flange seal between the flanges.
5.3.2 Process connection at the assembly
1. Mount the assembly on a vertical surface.
2. Connect the medium using the usual commercial connection fittings. Depending on
requirements, use conventional sealing materials, e.g. thread sealing tape or O-ring
(recommended) made of suitable material, e.g. FKM.

Flowfit CYA27 Installation
Endress+Hauser 19
5.3.3 Open outlet
With this type of installation, the assembly is located in a branch pipe that branches off a
main line and terminates in an open outlet→  8,  19. Ideally, the open outlet is
unpressurized or without counterpressure.
The pressure p must not exceed the permitted operating pressure of the assembly of
4 bar (58 psi) relative.
If the sensor is installed, the sensor's pressure specifications must also be observed.
If the medium pressure is above 4 bar (58 psi) relative, a pressure-reducing valve is
required.
1. Mount the assembly horizontally→  12.
2. Installing in the bypass is preferable to installing directly in the process line. The
bypass line can be shut off without interrupting the process (one upstream and one
downstream shut-off valve required). This enables sensor cleaning, for example,
without affecting the process.
3. Install a dirt trap (screen) with a mesh size of 500 µm upstream from the assembly. If
a pressure-reducing valve is used, it usually includes a dirt trap.
4. Set the flow value upstream from the assembly, e.g. via an upstream flow regulator.
The threaded adapters or hose adapters, which can be ordered, are sealed on the
assembly with an FKM O-ring and do not require additional sealing between the
assembly and adapter.
Flowfit CYA27
1
23456
7
8
9
A0043506
 8 Connection example with open outlet
1 Main inlet line
2 Manual valve (not included in scope of delivery)
3 Check valve (optional, not included in scope of delivery)
4 Pressure-reducing valve (optional, not included in scope of delivery)
5 Filter trap (optional, not included in scope of delivery)
6 CYA27 assembly
7 Manual valve (optional in the case of an upward-sloping output line, not included in scope of delivery)
8 Outlet
9 Main output line
The use of a check valve in the supply line of the assembly prevents the unintentional
backflow of media from the assembly into the process, e.g. during maintenance work.

Installation Flowfit CYA27
20 Endress+Hauser
5.3.4 Bypass with return
The counterpressure p2 is the definitive counterpressure for the assembly or sensors
and must not under any circumstances exceed the permitted pressure specification of
the assembly or sensors.
To achieve flow through the assembly with a bypass, pressure p1 must be higher than
pressure p2.
This requires the installation of an orifice plate or throttle valve in the main pipe.
p1 must not exceed the permitted operating pressure of the assembly of 4 bar (58 psi)
relative.
If the sensor is installed, the sensor's pressure specifications must also be observed.
1. Install the assembly horizontally →  12.
2. Connect the medium using the usual commercial connection fittings. Depending on
requirements, use conventional sealing materials, e.g. thread sealing tape or O-ring
made of FKM.
3. Installing the assembly in the bypass is preferable to installing it directly in the
process line. The bypass line can be blocked off without interrupting the process (a
shut-off valve is required upstream and downstream). This enables sensor cleaning,
for example, without affecting the process.
4. Install a dirt trap (screen) with a mesh size of 500 µm upstream from the assembly. If
a pressure-reducing valve is used, it usually includes a dirt trap.
5. Set the flow value upstream from the assembly, e.g. via an upstream flow regulator.
Flowfit CYA27
346
7
8
2
1
5
9
p1 p2
p1 > p2
A0043507
 9 Connection example with bypass and orifice plate in the main pipe
1 Main inlet line
2 Manual valve (not included in scope of delivery)
3 Check valve (not included in scope of delivery)
4 Pressure-reducing valve (optional, not included in scope of delivery)
5 Filter trap (optional, not included in scope of delivery)
6 CYA27 assembly
7 Manual valve (not included in scope of delivery)
8 Main output line
9 Orifice plate (not included in scope of delivery)
To take an assembly installed in this way out of operation, pressure relief should be
provided so that the pressure in the assembly can be reduced safely after shutting off
the supply and return lines. Suitable solutions include the optional sampling valve on
the assembly or the provision of a sampling point in the line.