Endress+Hauser Flowfit CYA27 User manual

Products Solutions Services
Operating Instructions
Flowfit CYA27
Modular flow assembly for multiparameter
measurements
BA02059C/07/EN/03.22-00
71559349
2022-03-31

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 the personnel ............ 5
2.2 Intended 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 ..................... 11
4.1 Incoming acceptance ................... 11
4.2 Product identification ................... 11
4.3 Scope of delivery ...................... 12
5 Mounting ......................... 13
5.1 Mounting requirements ................. 13
5.2 Mounting the assembly ................. 16
5.3 Mounting assembly in the process ......... 19
5.4 Connecting the flow switch, flow
measurement or status lighting (optional) ... 25
5.5 Installing sensor in assembly ............. 38
5.6 Connecting optional accessories ........... 40
5.7 Post-mounting check ................... 41
6 Commissioning .................... 42
6.1 Function check ....................... 42
6.2 Switching on the device ................. 42
7 Operation ......................... 44
7.1 Adapting the measuring device to the process
conditions ........................... 44
7.2 Sampling ............................ 45
8 Diagnostics and troubleshooting ... 47
8.1 General troubleshooting ................. 47
8.2 Faults in the assembly and process
integration .......................... 47
9 Maintenance ...................... 48
9.1 Maintenance schedule .................. 48
9.2 Maintenance tasks ..................... 49
9.3 Disassembly (e.g. for modification or
cleaning) ............................ 54
10 Repair ............................ 56
10.1 Spare parts .......................... 56
10.2 Return .............................. 57
10.3 Disposal ............................ 57
11 Accessories ....................... 58
11.1 Device-specific accessories ............... 58
12 Technical data .................... 60
12.1 Power supply ......................... 60
12.2 Performance characteristics .............. 60
12.3 Environment ......................... 60
12.4 Process ............................. 61
12.5 Mechanical construction ................ 62
Index .................................. 64

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
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
Reference to device documentation
Flow direction

Flowfit CYA27 Basic safety instructions
Endress+Hauser 5
2 Basic safety instructions
2.1 Requirements for the 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 Intended 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 (4.72 in) 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 a 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, type
and position of sensor slots.
For additional functions, the assembly can be fitted with optional accessories, e.g.:
• Status lighting to indicate the operating status
• Flow switch for monitoring the flow
• Flowmeter for flow measurement
• Sampling valve for direct sampling at the assembly
• Particle filter for particle reduction
7
8
10
1
2
3
4
5
6
9
12
11
13
14
A0043472
1 Process adapter inlet (female thread G 1/4") and hose connection (optional)
2 Inlet module
3 Module for holding a disinfection sensor with 25 mm (0.98 in) diameter
4 Disinfection sensor CCS5xD , e.g. CCS51D (not included in the scope of delivery)
5 Module for holding a sensor with Pg 13.5 connection, e.g. a pH sensor
6 pH sensor, e.g. CPS31E (not included in the scope of delivery)
7 Module for holding the conductivity sensor CLS82E with Pg 13.5 connection
8 Conductivity sensor CLS82E (not included in the scope of delivery)
9 Flow module
10 Flow switch or flowmeter (optional)
11 Outlet module
12 Process adapter outlet (female thread G 1/4") and hose connection (optional)
13 Status lighting (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 (0.98 in) sensors
• Sensor secured via pressure screw M35x2
• Sensors: →  58
• Flow versions
• 5 l/h (1.1 gal/h)
• 30 l/h (6.6 gal/h)
• Flow-dependent module whose design varies depending on the selected
flow version
• 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 (0.47 in) sensors in 120 mm (4.72 in) length
• Sensor installation via Pg 13.5 thread
• Sensors: →  58
• Flow-independent module that can be combined with both flow versions
A0043431
Flow module
• Qualitative display and control of the flow
• Flow must come from below
• Flow versions
• 5 l/h (1.1 gal/h)
• 30 l/h (6.6 gal/h)
• Flow-dependent module whose design varies depending on the selected
flow version
• Optional function
• Approved flow switch, see accompanying documentation
• Status lighting
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
A0047941
Flow module for continuous flow measurement
• Qualitative control and quantitative measurement of the flow volume
• Medium flows crosswise from above
• Flow versions
• 5 l/h (1.1 gal/h)
• 30 l/h (6.6 gal/h)
• Flow-dependent module whose design varies depending on the selected
flow version
• Optional function
Status lighting
The flow module, if used, must be the last module upstream from the
outlet module in order to guarantee flow through all modules.
A0043432
Module for the conductivity sensor CLS82E
• Medium flows to sensor from below
• Adapter for sensor CLS82E (12 mm (0.47 in) sensor with Pg 13.5 thread in
120 mm (4.72 in) length)
• Optional function: sampling valve (not shown here)
• Flow-dependent module whose design varies depending on the selected
flow version
A0043430
Dosing module
• Connection for supplying a liquid for pH adjustment (acidification) 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 is not included in the scope of
delivery)
• Medium flows through module from above
• Flow-independent module that can be combined with both flow versions
The dosing module, if used, should be the first module downstream
from the inlet module. An exception to this is a measurement which
could be falsified by the type of liquid added, e.g. a conductivity
measurement. In this case, the dosing module should be installed as the
second module →  22.
A0043894
Inlet module
• With needle valve (inlet valve)
• Connection G 1/4'' (ISO 228-1)
• Medium flows crosswise from below
• Drill hole for mounting (→  16)

Product description Flowfit CYA27
10 Endress+Hauser
A0043895
Outlet module
• With needle valve (outlet valve)
• Connection G 1/4'' (ISO 228-1)
• Medium flows crosswise from above
• Drill hole for mounting (→  16)
A0047942
Module for particle removal (only available through the replacement and
retrofitting module structure XPC0014)
• Flow-independent module that can be combined with both flow versions
• With needle valve in the top section (clear water)
• With G 1/4'' connection (ISO 228-1) in the bottom section (particle
discharge)
• Central flow direction (channel seal)
If used, the particle separator module should be the first module
downstream from the inlet module →  23.

Flowfit CYA27 Incoming acceptance and product identification
Endress+Hauser 11
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. Page search (magnifying glass symbol): Enter valid serial number.
3. Search (magnifying glass).
 The product structure is displayed in a popup window.

Incoming acceptance and product identification Flowfit CYA27
12 Endress+Hauser
4. Click the product overview.
 A new window opens. Here you fill information pertaining to your device,
including the product documentation.
Manufacturer 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

Flowfit CYA27 Mounting
Endress+Hauser 13
5 Mounting
5.1 Mounting requirements
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, →  16.
The prescribed orientation of the assembly may limit the installation of certain
sensors. e,g, upside-down installation.
5.1.2 Installation instructions
NOTICE
Ambient conditions
‣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 can freeze particularly with
low flow conditions. The medium temperature and the flow volume must be adjusted
accordingly. It may be necessary to insulate the supply and return lines and install the
assembly in an additional enclosure. This must be fitted with a separate heating
system if necessary.

Mounting Flowfit CYA27
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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)
ABC
D E F
60 (2.36)
A0045635
 1 Dimensions. Engineering unit: mm (in)
A Disinfection, pH and flow display version with sampling valve, status lighting and flow switch or flow
measurement
B Disinfection, pH, ORP and flow display version with sampling valve, status lighting and flow switch or flow
measurement
C Disinfection and flow display version with sampling valve, status lighting and flow switch or flow
measurement
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 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)

Flowfit CYA27 Mounting
Endress+Hauser 15
155 (6.10) 175 (6.89)
A0043194
 2 Mounting distance. Engineering unit: mm (in)
The minimum mounting distance required to remove the sensor(s) is 175 mm (6.9 in).

Mounting Flowfit CYA27
16 Endress+Hauser
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:
• Flow assembly Flowfit CYA27
• At least one sensor, e.g CCS51D for the measurement of 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 CPS31E
• ORP sensors, e.g. Memosens CPS16E
• Conductivity sensor CLS82E
• Oxygen sensors, e.g. COS22E
• Transmitter, e.g. Liquiline Compact CM82
• Multiparameter handheld device Liquiline Mobile CML18
• Extension cable CYK11
• Sampling valve on assembly if using modules for disinfection and conductivity
• Flow switch or flowmeter
• Status lighting
1
2
3
4
5
A0043060
 3 Example of a measuring system
1 Transmitter Liquiline CM44x or CM44xR
2 Measuring cable CYK10
3 pH sensor, e.g. CPS31E
4 Flow assembly Flowfit CYA27
5 Disinfection sensor CCS5xD (membrane-covered, ⌀25 mm (0.98 in)), 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.

Flowfit CYA27 Mounting
Endress+Hauser 17
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 included in the
scope of delivery.
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) 73 2.87( )
A0048283
 4 Direct wall mounting. Engineering unit: mm (in)
5.2.3 Mounting the assembly with wall holder
With the wall holder, 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 holder. Different
drill holes allow, for example, the use of the Flowfit CCA250 hole pattern.
Optional accessories, consisting of a wall holder with securing clips for assemblies with
1 to 6 modules.
The drill holes (hatched in graphic) correspond to those of assembly CCA250, which
can be reused.
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)
94 70(3. )
A0047945
 5 Dimensions of wall holder. Engineering unit: mm (in)

Mounting Flowfit CYA27
18 Endress+Hauser
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 holder.
2. Slide the assembly downwards on the securing clips until it clicks into place.
3. Fix the securing clips on the wall holder by tightening the grub screw slightly.
Tighten the grub screw so that it is as flush as possible against the securing clip.

Flowfit CYA27 Mounting
Endress+Hauser 19
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.

Mounting Flowfit CYA27
20 Endress+Hauser
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,  20. 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) gauge pressure.
If the sensor is installed, the sensor's pressure specifications must also be observed.
If the medium pressure is above 4 bar (58 psi) gauge pressure, a pressure-reducing
valve is required.
1. Mount the assembly horizontally →  13.
2. Installing in a branch pipe is preferable to installing directly in the process line. The
branch pipe can be blocked off without interrupting the process (a shut-off valve is
required upstream and downstream). This makes it possible to clean the sensor, for
example, without affecting the process.
3. If necessary, 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.
1
23456
7
8
9
A0043506
 8 Connection example with open outlet
1 Main inlet line
2 Manual valve (not included in the scope of delivery)
3 Check valve (optional, not included in the scope of delivery)
4 Pressure-reducing valve (optional, not included in the scope of delivery)
5 Filter trap (optional, not included in the scope of delivery)
6 Assembly Flowfit CYA27
7 Manual valve (optional in the case of an upward-sloping output line, not included in the 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.