Endress+Hauser OUSAF44 User manual

Products Solutions Services
Operating Instructions
OUSAF44
Optical sensor with the OUA260 flow assembly for
the measurement of UV absorption
BA00416C/07/EN/18.22-00
71596229
2022-10-31

OUSAF44 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ........... 4
1.1 Warnings ........................... 4
1.2 Symbols ............................ 4
1.3 Symbols on the product ............... 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 ................... 5
2.5 Product safety ....................... 6
3 Product description ............. 7
3.1 Sensor design ....................... 7
3.2 Measuring principle .................. 8
4 Incoming acceptance and
product identification .......... 9
4.1 Incoming acceptance ................. 9
4.2 Product identification ................. 9
4.3 Manufacturer address ............... 10
4.4 Scope of delivery .................... 10
5 Mounting ...................... 10
5.1 Mounting requirements .............. 10
5.2 Mounting the sensor ................ 13
5.3 Post-mounting check ................ 14
6 Electrical connection .......... 14
6.1 Connecting the sensor ............... 15
6.2 Lamp voltage ....................... 15
6.3 Versions for use in hazardous areas .... 16
6.4 Ensuring the degree of protection ..... 18
6.5 Post-connection check ............... 19
7 Commissioning ................ 20
7.1 Function check ..................... 20
7.2 Calibrating/adjusting the sensor ...... 20
8 Maintenance .................. 23
8.1 Maintenance schedule ............... 23
8.2 Replacing the hazardous area lamp .... 23
8.3 Replacing the mercury lamp .......... 23
8.4 Replacing the reference filter ......... 26
8.5 Replacing the measurement filter ..... 28
8.6 Replacing the sensor window and seal .. 30
9 Repair .......................... 34
9.1 General information ................. 34
9.2 Spare parts ........................ 34
9.3 Return ............................ 34
9.4 Disposal ........................... 35
10 Accessories .................... 35
10.1 Flow assembly ...................... 35
10.2 Cable ............................. 36
10.3 Calibration ......................... 36
11 Technical data ................. 36
11.1 Input .............................. 36
11.2 Environment ....................... 37
11.3 Process ............................ 37
11.4 Mechanical construction ............. 37
Index ................................. 39

About this document OUSAF44
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
Additional information, tips
Permitted
Recommended
Forbidden or not recommended
Reference to device documentation
Reference to page
Reference to graphic
 Result of a step
1.3 Symbols on the product
Reference to device documentation
Warning: UV radiation
Do not dispose of products bearing this marking as unsorted municipal waste. Instead, return them to the
manufacturer for disposal under the applicable conditions.

OUSAF44 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 sensor measures the spectral absorption of process liquids in the ultraviolet region of the
electromagnetic spectrum. The sensor is suitable for use in a wide range of applicationsin a
variety of industrial sectors , such as:
• Measurement of protein concentrations
• Chromatography monitoring
• Filtration monitoring
• Concentration measurement of organic compounds
• Detection of aromates
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
• Regulations for explosion protection
Electromagnetic compatibility
• The product has been tested for electromagnetic compatibility in accordance with the
applicable international standards for industrial applications.
• The electromagnetic compatibility indicated applies only to a product that has been
connected in accordance with these Operating Instructions.
2.4 Operational safety
Before commissioning the entire measuring point:
1. Verify that all connections are correct.

Basic safety instructions OUSAF44
6 Endress+Hauser
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
LCAUTION
Mercury lamp
Can cause damage to the eyes and skin!
‣Avoid any exposure of the eyes and skin to the unshielded product.
‣Wear suitable protective goggles to protect against UV radiation.
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.
2.5.2 Versions with hazardous area lamp
‣Observe the safety instructions in the XA pertaining to this manual.
Safety instructions for electrical equipment in hazardous areas, photometer sensors,
XA01403C

OUSAF44 Product description
Endress+Hauser 7
3 Product description
3.1 Sensor design
1 12 34
A0030202
 1 Sensor with flow assembly OUA260
1 Cable connector
2 Lamp module
3 Flow assembly OUA260 (depending on version)
4 Detector module
The detector and lamp can vary on account of the individual options ordered.

Product description OUSAF44
8 Endress+Hauser
3.2 Measuring principle
Light absorption
The measuring principle is based on the Lambert-Beer law.
There is a linear dependency between the absorption of light and the concentration of the
absorbing substance:
A = -log(T) = ε . c . OPL
T = I/I0
T ... Transmission
I ... Intensity of received light at detector
I0 ... Intensity of transmitted light of light source
A ... Absorption
ε ... Extinction coefficient
c ... Concentration
OPL ... Optical path length
A light source emits radiation through the medium and the incident radiation is measured on
the detector side.
Once the light has passed through a filter for wavelength selection, the intensity of the light is
determined by a photodiode and converted to a photocurrent.
The subsequent conversion to transmission (%) or absorbance units (AU, OD) is performed in
the associated transmitter.
1OPL
23
4
5
68 7 2
A0029412
 2 Absorption measurement with reference
1 Light source
2 Optical windows
3 Measurement filter
4 Measuring detector
5 Lens
6 Medium flow
7 Reference filter
8 Reference detector

OUSAF44 Incoming acceptance and product identification
Endress+Hauser 9
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
• Serial number
• Safety information and warnings
‣Compare the information on the nameplate with the order.
4.2.2 Product identification
Product page
www.endress.com/ousaf44
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.

Mounting OUSAF44
10 Endress+Hauser
3. Search (magnifying glass).
 The product structure is displayed in a popup window.
4. Click the product overview.
 A new window opens. Here you fill information pertaining to your device, including
the product documentation.
4.3 Manufacturer address
Endress+Hauser Conducta Inc.
4123 East La Palma Avenue, Suite 200
Anaheim, CA 92807 USA
4.4 Scope of delivery
The scope of delivery comprises the following, depending on the version ordered:
• Detector and lamp module without flow assembly or
• Detector and lamp module mounted on flow assembly OUA260
• Operating Instructions
‣If you have any queries:
Please contact your supplier or local sales center.
5 Mounting
5.1 Mounting requirements
5.1.1 Measuring system
An optical measuring system comprises:
• Sensor (photometer) OUSAF44
• Transmitter, e. g. Liquiline CM44P
• Cable set, e. g. CUK80
• Assembly OUA260