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Summary of Contents for Endress+Hauser CYA251
- Page 1 Operating Instructions Flowfit CYA251 Flow assembly for nitrate/SAC, turbidity and oxygen sensors BA00495C/07/EN/02.12 71189534...
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Page 3: Table Of Contents
Flowfit CYA251 Table of contents Safety instructions ....4 Designated use ......4 Installation, commissioning and operation . -
Page 4: Safety Instructions
Safety instructions Designated use The CYA251 flow assembly is designed for the installation of nitrate/SAC, turbidity and oxygen sensors, each with a diameter of 40 mm. The assembly is used in pipes and hoses. Thanks to its special design, it is possible to operate the flow assembly in pressurized systems (see "Technical data"). -
Page 5: Notes On Safety Icons And Symbols
Flowfit CYA251 Safety instructions Notes on safety icons and symbols The structure, signal words and safety colors of the signs comply with the specifications of ANSI Z535.6 ("Product safety information in product manuals, instructions and other collateral materials"). Safety message structure Meaning This symbol alerts you to a dangerous situation. -
Page 6: Identification
Identification Flowfit CYA251 Identification Nameplate The nameplate contains the following information: • Manufacturer data • Order code • Extended order code • Serial number • Operating conditions • Safety icons Compare the order code on the nameplate with your order. -
Page 7: Installation
Flowfit CYA251 Installation Installation Incoming acceptance, transport, storage • Make sure the packaging is undamaged! • Inform the supplier about any damage to the packaging. Keep the damaged packaging until the matter has been settled. • Make sure the contents are undamaged! •... - Page 8 Installation Flowfit CYA251 3.2.2 Notes on installation To ensure that medium flows through the assembly in a bypass configuration, the pressure p1 must be greater than the pressure p2. This is achieved by installing an orifice plate in the main pipe.
- Page 9 Flowfit CYA251 Installation No measures to increase pressure are required for branch pipes that branch off from the main pipe. a0016024 Fig. 4: Connection example involving an open outlet The inlet and outlet connection of the flow assembly are always identical.
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Page 10: Installation Instructions
• A 40 mm sensor, e.g. CAS51D • Transmitter, e.g. Liquiline CM442 • Measuring cable a0016022 Fig. 5: Measuring system (example) Process pipe Liquiline CM442 transmitter Measuring cable Return line with shutoff valve CYA251 flow assembly with 40 mm sensor Inlet with shutoff valve Endress+Hauser... -
Page 11: Installation With Wall Holder Unit
Flowfit CYA251 Installation Installation with wall holder unit a0016088 Fig. 6: Wall holder unit Hanger bolt STST 10x60 (forms part of the delivery) Please comply with the following instructions when installing the flow assembly: • Mount the flow assembly either –... -
Page 12: Sensor Installation
Installation Flowfit CYA251 Sensor installation 3.5.1 Preparatory steps NOTICE The inside of the flow assembly is not symmetrical. • You can identify the difference from the outside as follows: the bottom inlet to the assembly is sealed by a dummy cover when delivered. - Page 13 Flowfit CYA251 Installation 3.5.2 Installing oxygen and turbidity sensors a0016092 a0016095 a0016096 Fig. 8: Installation sleeve Fig. 9: CUS51D Fig. 10: CUS31 Fixing ring Receiver Counter nut Sensor adapter Sensor Install the sensor as follows: Guide the sensor into the sensor adapter (→ å 8).
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Page 14: Cleaning
Installation Flowfit CYA251 3.5.3 Installing the CAS51D sensor a0016092 a0016090 a0016091 Fig. 11: Installation sleeve Fig. 12: CAS51D 2/8 mm Fig. 13: CAS51D 40 mm Fixing ring Counter nut Sensor adapter Sensor Install the sensor as follows: Guide the sensor into the sensor adapter (→ å 11). -
Page 15: Commissioning
Flowfit CYA251 Commissioning Commissioning Prior to initial commissioning, make sure that: • All the seals are seated correctly (on the assembly and the process connection) • The sensor is correctly installed and connected WARNING Medium incorrectly connected to the assembly Danger of medium leaking •... -
Page 16: Maintenance
Maintenance Flowfit CYA251 Maintenance WARNING Risk of injury if medium or cleaner escapes! • Prior to performing any maintenance task, make sure that the process pipe is unpressurized, empty and rinsed. • Switch off the cleaning unit before removing the sensor from the medium. -
Page 17: Cleaning Agents
Flowfit CYA251 Maintenance Cleaning agents The choice of cleaning agent depends on the degree and type of fouling. The most common types of dirt and fouling and the suitable cleaning agents are listed in the following table. Type of fouling... -
Page 18: Accessories
Flowfit CYA251 Accessories Cleaning nozzle Cleaning nozzle for CYA251 • For automatic sensor cleaning. • Order number: 71144328 (suitable for the CAS51D sensor (2 mm or 8 mm gap)) • Order number: 71144330 (suitable for the CAS51D sensor (40 mm gap)) •... -
Page 19: Wall Holder Unit
Flowfit CYA251 Accessories Wall holder unit Wall mounting kit for CYA251 • Order number: 71144369 a0016088 Fig. 17: Wall mounting kit Hanger bolt STST 10x60 mm Endress+Hauser... -
Page 20: Troubleshooting
The device must be returned if repairs or a factory calibration are required, or if the wrong device has been ordered or delivered. According to legal regulations, Endress+Hauser, as an ISO-certified company, is required to follow certain procedures when handling returned products that are in contact with medium. -
Page 21: Technical Data
Flowfit CYA251 Technical Data Technical Data Environment Ambient temperature 0 to 50 °C (32 to 120 °F) range Storage temperature 0 to 50 °C (32 to 120 °F) Process Process temperature 0 to 50 °C (32 to 122 °F), not freezing Process pressure Max. - Page 22 Technical Data Flowfit CYA251 Process connection a0016046 Fig. 20: Process connections External thread G1¼, PVC Flange ANSI 1", PVC Glue-in port DN 25, PVC Hose D20 PVC Internal thread Rp ¾", PVC Internal thread NPT ¾", PVC Endress+Hauser...
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Page 23: Index
Flowfit CYA251 Index Accessories ........18 Checking Installation. - Page 24 BA00495C/07/EN/02.12 71189534 FM+SGML 6.0 71189534...
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