Knauer Azura RID 2.1L User manual

HPLC
HPLC
Detector RID 2.1L / RID 2.1L HighFlow
Instructions
Document no. V6750

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Note: For your own safety, read the instructions and observe the
warnings and safety information on the device and in the instructions.
Keep the instructions for future reference.
Note: In case you require a version of this instruction in another lan-
guage, please submit your request including the corresponding article
number via e-mail or fax to KNAUER.
Phone: [phone] (9-17h, Central European Time)
Fax: [phone]
E-Mail: [e-mail]
Languages: German, English
KNAUER Wissenschaftliche Geräte GmbH
Hegauer Weg 38
14163 Berlin
Germany
Phone: [phone]
Fax: [phone]
Internet: www.knauer.net
E-Mail: [e-mail]
Article number: V6750
Version number: 2.1
Last update: 2019/05/13
Original Edition
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ly paper from sustainable forests.
This document contains confidential information and may not be
reproduced without written content of KNAUER Wissenschaftliche
Geräte GmbH.
© KNAUER Wissenschaftliche Geräte GmbH 2019
All rights reserved.
AZURA® is a registered trademark of
KNAUER Wissenschaftliche Geräte GmbH.
Technical Support:
Publisher:
Version information:
The information in this document is subject
to change without prior notice.
For latest version of the instructions, check our website:
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AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Table of contents
Table of contents
1. Product information.........................................................1
1.1 Intended use......................................................1
1.2 Operating ranges..................................................2
1.3 Views ............................................................2
1.4 Performance features ..............................................3
1.5 Functional principle ................................................4
1.5.1 Detector design and optical path ...................................4
1.5.2 Calculating the signal value ........................................5
1.5.3 Flow path .......................................................5
2. Scope of delivery ...........................................................7
3. Basic safety instructions .....................................................7
3.1 Target group ......................................................7
3.2 Safety equipment .................................................7
3.3 What must the user take into account? ................................8
3.4 Warning notifications...............................................9
3.5 Decontamination ..................................................9
4. Symbols and signs .........................................................10
5. Unpacking and setup.......................................................10
5.1 Operating environment............................................10
5.2 Unpacking the detector ...........................................11
6. Initial startup..............................................................12
5.3 Power supply ....................................................12
6.1 Connecting the leak management ..................................12
6.2 Connecting the capillaries .........................................14
6.2.1 AZURA® Detector RID 2.1L ........................................14
6.2.2 AZURA® Detector RID 2.1L HighFlow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.3 Integrating the detector into the system .............................16
6.4 Connecting the the detector to the computer via LAN .................17
6.4.1 Configuring the LAN settings .....................................18
6.4.2 Connecting the cables ...........................................18
6.4.3 Configuring the router ...........................................19
6.4.4 Integrating the LAN into the company network ......................19
6.4.5 Controlling several systems separately in the LAN....................19
6.5 Remote control...................................................23
6.5.1 Connector assignment ...........................................23
6.5.2 Connecting cables to the pin header ...............................24
6.6 Integrator port ...................................................25
7. Operation ............................................................... 26
7.1 Meaning of the LEDs ..............................................26
7.2 Default settings ..................................................27
7.2.1 Autozero .......................................................28
7.2.2 Temperature control .............................................28
7.2.3 Signal mode ....................................................28
7.2.4 Time constant & data rate ........................................28

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Table of contents
7.2.5 LED power factor ................................................29
7.2.6 Extended Dynamic Range ........................................30
7.2.7 Analog output scaling and oset ..................................30
7.3 GLP .............................................................31
7.4 Switching on the detector..........................................31
7.5 Flushing the flow cell ..............................................32
7.6 Activate standby..................................................33
7.7 Switching o the detector..........................................33
8. Functionality tests ........................................................ 34
9. Troubleshooting .......................................................... 35
9.1 Troubleshooting .................................................35
9.2 L AN ............................................................35
9.3 Device problems .................................................36
9.4 System messages.................................................36
9.5 Proceeding with tasks after a leak ...................................38
10. Maintenance and care ..................................................... 38
10.1 User tasks and intervals............................................38
10.2 Check calibration/validation........................................39
10.3 Preparing the detector for storage or transport .......................39
11. Technical data............................................................ 40
11.1 Main features ....................................................40
11.2 Communication ..................................................41
11.3 General .........................................................41
12. Chemical compatibility of wetted materials ...................................41
12.1 General .........................................................41
12.2 Plastics ..........................................................42
12.3 Non-metals ......................................................44
12.4 Metals ..........................................................44
13. Repeat orders ............................................................ 45
14. Legal information......................................................... 46
14.1 Transport damage ................................................46
14.2 Warranty conditions...............................................46
14.3 Warranty seal ....................................................46
14.4 Declaration of Conformity .........................................47
14.5 Disposal.........................................................47
14.5.1 AVV-Marking Germany ...........................................47
14.5.2 WEEE registration ...............................................47
14.5.3 Eluents and Other Operating Materials .............................47
15. HPLC glossary.............................................................47
16. Index.................................................................... 49

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 1
1. Product information
The AZURA® Detector RID 2.1L / RID 2.1L HighFlow1is a sensitive and
competitively priced dierential refractometer which is suitable for
detecting compounds with little or no UV activity such as alcohols, sugars,
lipids or polymers in high concentrations.
The device is a member of the AZURA L product line and shares a num-
ber of common features.
The front cover serves as a protection for the detector and its users,
but can also be removed.
The detector is a sturdy device due to its large footprint and low center
of gravity.
The leak tray on the front collects leaking fluids and protects the com-
ponents from possible damage.
The LEDs indicate the device status. This tells the user whether the
detector is working properly or whether an error has occurred.
On the rear side you will find the supply connection and further con-
nections to control the device.
The device name is above the serial number on the front. A white stick-
er on the back gives information about the manufacturer (name and
address), the product number and the specifications of the supply
connection.
Note: At the time of delivery, the detector is filled with ethanol.
1.1 Intended use
Note: Only use the device for applications that fall within the range of
the intended use. Otherwise, the protective and safety equipment of the
device could fail.
Detection via refractive index is very suitable for analytical HPLC
(High Performance Liquid Chromatography), GPC (Gel Permeation
Chromatography) and SEC (Size Exclusion Chromatography).
RI detectors are extremely versatile, but the detection is made with
lower sensitivity as with other detection methods. RI detectors are not
suitable for gradient chromatography, because they react very sensitive
to changes in eluent composition. In addition, RI detectors are very
dependent from temperature and pressure, and unstable conditions
cause base line instability. In some cases, positive and negative peaks
may occur in a single analysis.
The detector is designed for research and may be not suitable for
diagnostic purposes.
1Both variants will be referred to as "detector”
AZURA® L-characteristics
Identification

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
2 Product information
1.2 Operating ranges
The AZURA® Detektor RID 2.1L can be used in the following areas for
analytical applications (with flow rates up to 10 ml/min):
Food analysis
Chemical analysis
Pharmaceutical analysis
Environmental analyses
Biochemical analysis
The AZURA® Detektor RID 2.1L HighFlow can be used for preparative
applications (with flow rates up to 100 ml/min): It is not suitable for
analytical analysis.
1.3 Views
Front view
Legend
1 Label with maximum
flow rate
2 OUT port
3 IN port
4 Standby button with
LED display (see 7.1 on
page 26)
5 Leak tray
6 Capillary guide
34
5
6
2
1
Fig. 1: Front view
Rear View
Legend
1 Integrator port
2 Service interface (USB)
3 LAN and switch con-
nector 1
4 LAN and switch con-
nector 2
5 Pin header
6 Power supply connec-
tion and power switch
1 2 3 4 5 6
Fig. 2: Rear view

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 3
7 Rear label
7
Fig. 3: Label
1.4 Performance features
The newly designed optical bench with advanced temperature control
ensures high sensitivity, fast baseline stabilization, and excellent repro-
ducibility. Furthermore, the long-life LED and highly back pressure resis-
tant flow cell guarantee minimal maintenance.
If the Extended Dynamic Range option is active, it is possible to broaden
the linear dynamic range.
The detector measures with a maximum data rate of 100Hz. During the
measurement, approx. 100 spectra per second are recorded.
The detector can be operated with one of the available chromatography
data systems (OpenLAB® EZChrom Edition, ClarityChrom®, Chrome-
leon™, PurityChrom® and Mobile Control Chrom), as well with an option-
al touch display (Mobile Control), via LAN or analog input/output, by
which it can be integrated in nearly every LC system.
The Mobile Control and supported software products display or read
GLP data, such as the operating hours of the device or light sources. For
a detailed description of viewing or reading the GLP data, see the appro-
priate instructions for the software products:
(https://www.knauer.net/en/Support/User-manuals/Software).
Light intensity and balance, zero glass position and LED current can be
easily monitored via the Mobile Control and supported software products
to ensure optimal working conditions for your analysis.
Optical bench
Extended Dynamic Range
Data rate
Control
GLP data
Troubleshooting

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
4 Product information
The AZURA® Neo electronic platform features:
New microprocessor for faster device performance
Communication interfaces: IP dual stack with switch (for connecting
AZURA® devices among each other) and LAN stack function plus USB
service interface (internal USB to RS-232). Both LAN ports (1 and 2) can
be used as interface or as switch.
Industrial standard 4–20 mA analog input (replacing 0–10 V input on
the previous electronic platform).
No external display support.
1.5 Functional principle
When a ray of light passes from one medium into another the light is
refracted or bent depending on the light ray’s speed of light and the
angle of incidence. The extent to which a medium refracts light is its
refractive index (RI). Snell’s law of refraction expresses the relationship
between the angle of incidence and the angle of refraction.
Snell’s Law of refraction
where
α1= angle of incidence
α2= angle of refraction
c1= speed of light in medi-
um 1
c2= speed of light in medi-
um 2
n1= refractive index in
medium 1
n2= refractive index in
medium 2
n= relative refractive index
The refractive index of a medium depends on the wavelength of the light
and the density of the medium. Normally, in an RI detector, the wave-
length is constant. The density depends on the temperature, pressure
and composition of the medium.
1.5.1 Detector design and optical path
The AZURA® Detector RID 2.1L HighFlow is a dierential refractive index
detector of the deflection type. The detector measures the deflection
of a light beam causes by the dierence in refractive index between the
liquids in sample and reference cell compartments of the flow cell.
A light beam emitted from the LED light source 1crosses the RID’s
sample and the reference cells 2twice. When both cells contain pure
solvent, the system is calibrated to zero by means of a parallel zero glass
plate 3which positions the beam on the two detector diodes 4in such
a manner that the measured light intensities (I1and I2) of the two diodes
are virtually identical. When the sample cell contains a solution with a
AZURA® Neo

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 5
dierent refractive index, the light beam is geometrically proportionally
deflected depending on the relative change of the refractive index
(according to Snell´s law).
This results in a change of the light intensities I1and I2(one increases and
the other decreases), proportional to concentration and refractive index
of the sample solution. From these intensity changes the signal value is
calculated.
1.5.2 Calculating the signal value
Signal value
I1–I2= dierence of intensity values
I1+I2= sum of intensity values
a= autozero constant
c= calibration constant
The light beam reaches the two detector diodes (1 and 2) which deliver
the intensity values I1and I2during measurement, depending on the light
beam’s deflection. The dierence and sum of I1and I2are calculated con-
tinuously, and the resulting signal is given out to the device’s outputs.
1.5.3 Flow path
During analysis, the solvent takes the following flow path (see figure
below):
1. Enters through IN port.
2. Passes through heat exchanger.
3. Flows through sample compartment of the flow cell.
4. Passes through flush valve.
5. Exits through OUT port.
1
2
3
4
Analysis

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
6 Product information
Note: Only use spare parts and accessories made by KNAUER or a com-
pany authorized by KNAUER.
Power supply cable
AZURA® Detector RID 2.1L / RID 2.1L HighFlow device
AZURA® Detector RID 2.1L / RID 2.1L HighFlow accessory kit
AZURA® accessory kit
Valid documents:
AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions (V6750)
Installation Qualification (“IQ”)
Declaration of Conformity
3.1 Target group
3.2 Safety equipment
2. Scope of delivery
3. Basic safety instructions
This document address persons who are qualified as chemical laboratory
technicians or have completed comparable vocational training.
The following knowledge is required:
Fundamental knowledge of liquid chromatography
Knowledge regarding substances that are suitable only to a limited
extent for use in liquid chromatography
Knowledge regarding the health risks of chemicals
Participation during an installation of a device or a training by the com-
pany KNAUER or an authorized company.
If you do not belong to this or a comparable professional group, you may
not perform the work described in these instructions under any circum-
stances. In this case, please contact your superior.
When working with the device, take measures according to lab regula-
tions and wear protective clothing:
Safety glasses with side protection
Protective gloves
Lab coat
Legend
1 Solvent
2 Heat exchanger
3 Sample cell
4 Reference cell
5 Flush valve
6 Temperature con-
trolled compart-
ment
7 Waste
1
23
6
4
5
7
When the flush valve is activated the solvent takes the following flow path
(see figure below):
1. Enters through IN port.
2. Passes through heat exchanger.
3. Flows through sample compartment of the flow cell.
4. Passes through flush valve and directed to the second heat
exchanger.
5. Flows through reference compartment of the flow cell.
6. Exits through OUT port.
Legend
1 Solvent
2 Heat exchanger
3 Sample cell
4 Reference cell
5 Flush valve
6 Temperature con-
trolled compart-
ment
7 Waste
1
23
6
4
5
7
Flushing process

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 7
Note: Only use spare parts and accessories made by KNAUER or a com-
pany authorized by KNAUER.
Power supply cable
AZURA® Detector RID 2.1L / RID 2.1L HighFlow device
AZURA® Detector RID 2.1L / RID 2.1L HighFlow accessory kit
AZURA® accessory kit
Valid documents:
AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions (V6750)
Installation Qualification (“IQ”)
Declaration of Conformity
3.1 Target group
3.2 Safety equipment
2. Scope of delivery
3. Basic safety instructions
This document address persons who are qualified as chemical laboratory
technicians or have completed comparable vocational training.
The following knowledge is required:
Fundamental knowledge of liquid chromatography
Knowledge regarding substances that are suitable only to a limited
extent for use in liquid chromatography
Knowledge regarding the health risks of chemicals
Participation during an installation of a device or a training by the com-
pany KNAUER or an authorized company.
If you do not belong to this or a comparable professional group, you may
not perform the work described in these instructions under any circum-
stances. In this case, please contact your superior.
When working with the device, take measures according to lab regula-
tions and wear protective clothing:
Safety glasses with side protection
Protective gloves
Lab coat

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
8 Product information
3.3 What must the user take into account?
All safety instructions in this document
The environmental, installation, and connection specifications in this
document
National and international regulations pertaining to laboratory work
Original spare parts, tools, and solvents made or recommended by
KNAUER
Good Laboratory Practice (GLP)
Accident prevention regulations published by the accident insurance
companies for laboratory work
Filtration of substances under analysis
Use of inline filters
Once the capillaries have been used, never re-use them in other areas
of the HPLC system.
Only use a given PEEK fitting for one specific port and never re-use it
for other ports. Always install new PEEK fittings on each separate port.
Follow KNAUER or manufacturer’s instructions on caring for the co-
lums.
More safety-relevant information is listed below:
flammability: Organic solvents are highly flammable. Since capillaries
can detach from their screw fittings and allow solvent to escape, it is
prohibited to have any open flames near the analytical system.
solvent tray: Risk of electrical shock or short circuit if liquids get into
the device‘s interior. For this reason, place all bottles in a solvent tray.
solvent lines: Install capillaries and tubing in such a way that liquids
cannot get into the interior in case of a leak.
leaks: Regularly check if any system components are leaking.
power cable: Defective power cables are not to be used to connect
the device and the power supply system.
self-ignition point: Only use eluents that have a self-ignition point hig-
her than 150 °C under normal ambient conditions.
power strip: If several devices are connected to one power strip, al-
ways consider the maximum power consumption of each device.
power supply: Only connect devices to voltage sources, whose voltage
equals the device‘s voltage.
toxicity: Organic eluents are toxic above a certain concentration.
Ensure that work areas are always well-ventilated! Wear protective
gloves and safety glasses when working on the device!
Where is use of the device prohibited?
Never use the system in potentially explosive atmospheres without
appropriate protective equipment. For further information, contact the
Technical Support of KNAUER.
Secure decommissioning
Take the device completely out of operation by disconnecting the power
plug from the power supply (wall socket or power strip).
Opening the device
The device may be opened by the KNAUER Technical Support or any
company authorized by KNAUER only.

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 9
3.4 Warning notifications
3.5 Decontamination
Possible dangers related to the device are divided into personal and
material damage in these instructions.
Sign Meaning
DANGER (red) indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING (orange) indicates a hazardous
situation which, if not avoided, could result in
death or serious injury.
CAUTION (yellow) indicates a hazardous
situation which, if not avoided, could result in
minor or moderate injury.
NOTICE (blue) is used to address practices
not related to physical injury.
1
Gerätename Betriebsanleitung, V-Nummer
Contamination of devices with toxic, infectious or radioactive substances
poses a hazard for all persons during operation, repair, sale, and disposal
of a device.
All contaminated devices must be properly decontaminated by a specia-
list company or the operating company before they can be recommissi-
oned, repaired, sold, or disposed of. All materials or fluids used for
decontamination must be collected separately and disposed of properly.
Decontamination Report
Devices without a completed Decontamination Report will not be repai-
red. If you would like to return a device to KNAUER, make sure to enclose
a completed Decontamination Report with the device:
https://www.knauer.net/decontamination-report.
Life-threatening injuries
Health danger if getting in contact with toxic, infectious or radio-active
substances.
Before disposing of the device or sending it away for repair, you are
required to decontaminate the device in a technically correct manner.
3.3 What must the user take into account?
All safety instructions in this document
The environmental, installation, and connection specifications in this
document
National and international regulations pertaining to laboratory work
Original spare parts, tools, and solvents made or recommended by
KNAUER
Good Laboratory Practice (GLP)
Accident prevention regulations published by the accident insurance
companies for laboratory work
Filtration of substances under analysis
Use of inline filters
Once the capillaries have been used, never re-use them in other areas
of the HPLC system.
Only use a given PEEK fitting for one specific port and never re-use it
for other ports. Always install new PEEK fittings on each separate port.
Follow KNAUER or manufacturer’s instructions on caring for the co-
lums.
More safety-relevant information is listed below:
flammability: Organic solvents are highly flammable. Since capillaries
can detach from their screw fittings and allow solvent to escape, it is
prohibited to have any open flames near the analytical system.
solvent tray: Risk of electrical shock or short circuit if liquids get into
the device‘s interior. For this reason, place all bottles in a solvent tray.
solvent lines: Install capillaries and tubing in such a way that liquids
cannot get into the interior in case of a leak.
leaks: Regularly check if any system components are leaking.
power cable: Defective power cables are not to be used to connect
the device and the power supply system.
self-ignition point: Only use eluents that have a self-ignition point hig-
her than 150 °C under normal ambient conditions.
power strip: If several devices are connected to one power strip, al-
ways consider the maximum power consumption of each device.
power supply: Only connect devices to voltage sources, whose voltage
equals the device‘s voltage.
toxicity: Organic eluents are toxic above a certain concentration.
Ensure that work areas are always well-ventilated! Wear protective
gloves and safety glasses when working on the device!
Where is use of the device prohibited?
Never use the system in potentially explosive atmospheres without
appropriate protective equipment. For further information, contact the
Technical Support of KNAUER.
Secure decommissioning
Take the device completely out of operation by disconnecting the power
plug from the power supply (wall socket or power strip).
Opening the device
The device may be opened by the KNAUER Technical Support or any
company authorized by KNAUER only.

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
10 Product information
The following symbols and signs can be found on the device:
Symbols Meaning
High-voltage hazard
Electrostatic discharge hazard, damages to sys-
tem, device, or components can occur.
Obey maximum load for leak tray during transpor-
tation, installation and operation.
A device marked with CE fulfills the product spe-
cific requirements of European directives. This is
confirmed in a Declaration of Conformity.
Testing seals in Canada and the USA at nationally
recognized testing centers (NRTL). The certified
device or system has successfully passed the qual-
ity and security tests.
Because of its general temperature sensitivity, the detector must always
be the lowest device in a system. The RI detector must always be situated
below a UV detector because it is more sensible to temperature.
The capillary kits for easy installation (available as accessory) only fit if the
system is set up accordingly.
Note: At the time of delivery, the detector is filled with ethanol. Flush the
system (with the flush valve open) with water for 60 minutes before start-
ing the measurement.
5.1 Operating environment
Before you specify the location, read the technical data (see 11 on page
40). There you will find all the important information about power con-
nection, ambient conditions and humidity.
Only if the requirements for ambient conditions of the operating envi-
ronment are met, the intended use can be ensured. In order to ensure
thermo stability and to prevent drift eects, note the following aspects:
More eective aspects for detectors in HPLC systems are described in the
according chapter (see 6.3 on page 16).
Note: The leak may malfunction it the device is placed on a tilted surface.
Check the horizontal position with a spirit level.
4. Symbols and signs
5. Unpacking and setup

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 11
Device defect
The device overheats at exposure to sunlight and insucient air circula-
tion. Device failures are very likely.
Set up the device in such a way that it is protected against exposure
to direct sunlight.
Leave room for air circulation: See paragraph „space requirements“.
Set up the detector on an even surface.
Protect the detector from direct sunlight.
Set up the detector in a place protected from draft (air conditioning).
Protect the detector from strong draft.
Do not set up the device near to other machines that cause floor
vibrations.
Avoid vibration.
Keep the detector away from high frequency sources. High-frequency
sources may compromise measuring values.
If you are located in an earthquake area, use the bore holes 1. The
bore holes are located on both right and left side panels.
Minimum of 5 cm with a device on one side.
Minimum of 10 cm with devices on both sides.
5.2 Unpacking the detector
The detector is delivered in a closed package. To prevent damage, the
package is the best possible protection for the protector.
You have checked the carton for shipping damage.
Utility knife
Bruising danger
Damage to the device by carrying or lifting it on protruding housing
parts. The device may fall and thus cause injuries.
Lift the device only centrally on the side of the housing.
General requirements
1
Space requirements
Prerequisites
Tools

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
12 Product information
Process
1. Set-up the package in such a way that you can read the label.
2. Cut the tape with a utility knife and open the package.
3. Lift o the foam pad. Take out the accessories kit and the manual.
4. Open the accessories kit and check the scope of delivery. In case
any parts are missing, contact the Technical Support.
5. Hold the device from below, lift it out of the packaging and place it
on its feet. Do not hold onto the front cover.
6. Check the device for transport damage. In case of damage, please
contact the technical support.
7. Set up the device at the operation site. Remove the protective foil.
Store packaging and keep the included packing list for repeat orders.
5.3 Power supply
Electronic defect
Electronic hazard when using an identically constructed power adapter
from another manufacturer.
Only use spare parts and accessories from KNAUER or a company
authorized by KNAUER.
Note: Make sure that the power adapter and power cables meet the
requirements (see 11.3 on page 41). Removable power cables must
not be replaced by other types of cables.
The detector is intended for use with AC power networks of 100-240 V.
Only the supplied power cable is to be used to connect the device to
the mains supply.
Make sure that the power plug on rear of the device is always accessi-
ble, so that the device can be disconnected from the power supply.
6.1 Connecting the leak management
The leak management consists of the leak sensor and the drainage
system. The drainage system ensures that escaping liquids flow into a
waste bottle. If there is too much liquid, the red LED starts flashing. Both
the device and the data acquisition via chromatography software are
stopped.
Remove the front cover.
Next steps
6. Initial startup
Prerequisites

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 13
Procedure Process Figure
1. Carefully push the funnel 1
into the center opening of the
capillary guide 2.
12
Fig. 4: Funnel and capillary
guide
2. Push the long ending of the
first nozzle 4into the hose 3.
3
4
Fig. 5: Hose and nozzle
3. Afterwards, push the nozzle
onto the funnel.
4. Push the other end of the hose
onto the nozzle 5of the leak
tray.
5
Fig. 6: Hose connected to
device
5. Attach the waste nozzle 6to
the bottom unit
6. Attach the wastehose o the
waste nozzle and connect it to
the waste container.
7. Place the waste container
below the devices.
6
Fig. 7: Leak tray with nozzle
Attach the front cover.
Next steps

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
14 Product information
6.2 Connecting the capillaries
Component defect
Damage to the flow cell due to excessive tightening. Observe the
torque of the screw connection.
Use 5 Nm for stainless steel fittings
Use 0.5 Nm for PEEK fittings.
Before connecting capillaries, note the following issues:
The input capillary is connected to the IN port, the output capillary to
the OUT port. If the capillaries are connected incorrectly, damages at
the flow cell and a reduced detector performance may occur.
Choose fittings which keep the dead volume at a low level, and short
capillaries with a small diameter.
The 5 bar pressure rating is only valid under flow-through conditions in
the direction from the inlet to the outlet with a free drain at the outlet.
Only install the waste tubing kit, which is part of the delivery, at the
detector outlet.
The tubing in the kit has an ID of 0.9 mm. The tubing in the kit has an
ID of 0.9 mm. Do not install a backpressure capillary or capillaries with
a smaller inner diameter and make sure that the solvent can freely flow
to the waste without any backpressure. Otherwise, damage to the
detector is possible.
If a certain back pressure at the outlet is necessary, please install a
backpressure regulator, which does not build up more than 1.2 bar.
In the case of adding an additional detector to the system, it must be
connected upstream of the refractive index detector in order to avoid
damage to the RID 2.1L. To optimize the detector performance the
waste container should be positioned above the level of the RID 2.1L.
6.2.1 AZURA® Detector RID 2.1L
At the front side, both connections are designed for 1/16'' capillaries and
standardized fittings.
Following procedure can be appplied for both the IN port and the OUT
port.
Open-end wrench
Procedure Figure
1. Push the capillary 1through
the fitting 2.
2. Attach the seal ring 3.
Important information for
connecting the capillaries
Tools
321

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
Product information 15
Procedure Figure
3. Insert the capillary as far as
possible into the IN port 4or
OUT port 5at the front of the
device.
4. Tighten the fitting finger tight.
4
5
Check if all fittings are tight.
6.2.2 AZURA® Detector RID 2.1L HighFlow
At the front side, both connections are designed for 1/4'' UNF flat bottom
fittings.
Open-end wrench
Component defect
Damage of the flow cell by high backpressure.
Install the backpressure regulator from the supplied kit.
IN port
Procedure Figure
1. Push the capillary 1through
the fitting 2.
2. Slide the lock ring 3over the
tubing. Note that the tapered
end of the lock ring has to
point to the seal ring 4.
3. Attach the seal ring 4.
124
3
2
13
24
4. Insert the capillary as far as
possible into the IN port 5at
the front of the device.
5. Tighten the fitting finger tight.
Next steps
Tools
5

AZURA® Detector RID 2.1L / RID 2.1L HighFlow Instructions V6750
16 Product information
OUT port
Procedure Figure
1. Push the capillary 1through
the fitting 2.
2. Slide the lock ring 3over the
tubing. Note that the tapered
end of the lock ring (with the
thin edge) has to point to the
seal ring 4.
3. Attach the seal ring 4.
124
3
2
13
24
4. Insert the capillary as far as
possible into the OUT port 5
at the front of the device.
5. Tighten the fitting finger tight.
6. Connect the capillary to the
OUT port 6with the T-piece
7and tighten the fitting finger
tight.
7. Connect the backpressure reg-
ulator 8between T-piece
and capillary 9which leads
into a waste container. Note
the arrow on the backpressure
regulator which shows the flow
direction.
8. Connect the capillary to the
fraction collection bl with the
T-piece and tighten the fitting
finger tight.
2
13
24
6
bl
8
9
7
Check if all fittings are tight.
6.3 Integrating the detector into the system
To integrate the detector into a system, note the ambient conditions
found in the section Technical Data as well as the ambient conditions of
other devices to be integrated into that system. The detector is integrated
into the HPLC flow system by connecting the capillary to the flow cell and
the HPLC system. The capillary connections in a basic HPLC system are
shown in the following picture.
5
Next Steps