Keit IRmadillo User manual

26 July 2022 12:02
DOC0935 IRmadillo User Manual
ASM0627-10-Z-Cx-Ex-Gx-D3x
www.keit.co.uk
[email protected]

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Table of Contents
1. Safety ............................................................................................................................3
1.1. General safety ........................................................................................................3
1.2. Lifting instructions...................................................................................................3
1.3. Electrical safety.......................................................................................................3
1.4. Pressure and temperature limits .............................................................................3
1.5. Operating environment limits ..................................................................................4
2. How to Power, Purge and Connect the IRmadillo...........................................................5
2.1. Powering the IRmadillo...........................................................................................5
2.1.1. Uninterruptible power supply (UPS).................................................................5
2.1.2. Power cable.....................................................................................................5
2.2. Purging the IRmadillo..............................................................................................6
2.3. How to connect data communications.....................................................................7
2.3.1. Connecting to the internal controller.................................................................8
2.4. Checking for warnings and checking the probe is clean........................................10
2.4.1. Cleaning instructions......................................................................................10
2.4.2. Recognising if the probe is clean ...................................................................11
2.5. Taking a background ............................................................................................12
2.6. Installation best practice........................................................................................12
3. Maintenance................................................................................................................14
3.1. Service and support contacts................................................................................14
3.2. Maintenance & support programme (MSP)...........................................................14
3.3. Spectrum health....................................................................................................14
3.3.1. Use at high temperature ................................................................................15
3.3.2. Emitter ageing................................................................................................15
3.4. Remote health check............................................................................................16
4. Components ................................................................................................................17
4.1. IRmadillo spectrometer.........................................................................................17
4.1.1. Dust caps.......................................................................................................19
4.2. Controller specifications........................................................................................19
4.3. Storage conditions................................................................................................19
5. Accessories .................................................................................................................20
5.1. Sample cell - ASM1398 ........................................................................................20
5.1.1. Maintenance..................................................................................................20
5.1.2. Cleaning ........................................................................................................20
5.2. Flow cell................................................................................................................21
5.2.1. High flow cell - ASM1396...............................................................................21

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5.2.2. Low flow cell - ASM1222................................................................................22
5.2.3. Tri-port flow cell - ASM1101...........................................................................23
5.2.4. Safety............................................................................................................25
5.2.5. Maintenance..................................................................................................25
5.2.6. Cleaning ........................................................................................................25
5.3. Flanged probe.......................................................................................................25
5.3.1. Safety............................................................................................................26
5.3.2. Installation .....................................................................................................27
5.3.3. Maintenance..................................................................................................29
5.4. Port tube - ASM1487 ............................................................................................29
5.4.1. Safety............................................................................................................30
5.4.2. Installation .....................................................................................................30
5.5. Port Flange - ASM1486 ........................................................................................30
5.5.1. Safety............................................................................................................31
5.5.2. Installation .....................................................................................................32
5.5.3. Maintenance..................................................................................................32
5.6. Cradle - ASM1453 ................................................................................................33
5.6.1. Safety............................................................................................................34
5.6.2. Installation .....................................................................................................34
5.6.3. Maintenance..................................................................................................35
5.7. Inclined Stand –ASM0916....................................................................................35
5.7.1. Safety............................................................................................................36
5.7.2. Installation .....................................................................................................36
5.8. Ingold DN40..........................................................................................................37
5.8.1. Safety............................................................................................................37
5.8.2. Installation .....................................................................................................38
6. Troubleshooting...........................................................................................................39

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1. SAFETY
“WARNING” refers to situations that could result in personal injury.
“CAUTION” refers to situations that could result in equipment damage.
Failure to follow the requirements below may lead to dangerous situations.
1.1. General safety
WARNING
The spectrometer weighs ~18 kg; handle with care
CAUTION
Do not operate outside the range of environmental or analyte
conditions specified on the product label
CAUTION
The probe is NOT a carry handle
CAUTION
Do not open the spectrometer; it contains no user-serviceable
parts
1.2. Lifting instructions
Lift the device using the lip around the lid or with hands underneath the base. Do not use the
probe as a carry handle; this could cause damage. Users should risk assess manual handling
and use lifting equipment if necessary.
1.3. Electrical safety
WARNING
The electrical mains cable must be earthed and should include
a 5A fuse with a means of isolating both live and neutral; obey
local electrical safety codes
WARNING
An additional earth connection is provided on the enclosure
chassis using an M6 screw; use if required by local codes
WARNING
Never disconnect the mains power connector when energised
CAUTION
Residual current protection or ground fault interrupter devices
are recommended
1.4. Pressure and temperature limits
The maximum pressure and temperature (ambient and analyte) limits for the device vary
depending on the model and mechanical interface. Refer to the product label to confirm the
limits.
Do not exceed the pressure limits on the product label as this could be dangerous and will
invalidate the warranty. If in doubt, contact Keit for advice before installing the spectrometer.

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1.5. Operating environment limits
The spectrometer is thermally stabilised and designed to operate indoors or outdoors under a
variety of conditions and environments. Avoiding exposure to direct sunlight will help maintain
this thermal stability.
Table 1 –Atmospheric requirements for electrical safety
Parameters
Value
Units
Pollution degree of intended environment
4
Maximum installation altitude
3000
metres
Pollution degree of the environment refers to the level of contamination that the exterior of the
device can cope with. Pollution degree 4 means that continuous conductivity from conductive
dust, rain or other wet conditions will not cause electrical safety to be compromised.
Consideration should also be given to ventilation of the surrounding area when the system is
being purged.
CAUTION
Purging the device with dry nitrogen is recommended for
optimum performance (Note: maximum inlet pressure of 1 barg
with a flow rate 0.5 to 2 litre/min).
WARNING
When purging with nitrogen, ensure there is adequate
ventilation to prevent asphyxiation; an oxygen sensor is
recommended.

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2. HOW TO POWER, PURGE AND CONNECT THE IRMADILLO
2.1. Powering the IRmadillo
NOTE
See Section 1 Safety prior to attempting installation.
The spectrometer is normally supplied with a blunt-cut mains cable to be wired into your
electrical supply. The instrument requires single-phase mains input and must be connected to
a permanent earth (grounding) connection. A 5A fuse should be fitted in the live/hot supply
connection.
The power supply needs to be fitted with a means of isolating both live and neutral by fitting a
disconnecting switch or using a suitable circuit breaker that meets the requirements of IEC
60947-1 and IEC 60947-3. The switch must be located within easy reach of the instrument
and must be marked as the disconnection devicefor the equipment. The disconnection device
must not interrupt the earth connection.
The spectrometer is designed to operate over a wide range of voltages shown below in Table
2 - IRmadillo power specifications. If you plan to operate the spectrometer outside of these
ranges, contact Keit for advice before powering up the instrument.
Table 2 - IRmadillo power specifications
Parameters
Value
Units
AC input voltage
100-240
V
AC input frequency
50/60
Hz
Mains supply fluctuations (% of
Nominal Value)
±10
%
Power consumption
110 (max)
W
Overvoltage Category
CAT II
2.1.1. Uninterruptible power supply (UPS)
To ensure a reliable supply of power to the IRmadillo, we strongly recommend use of an
uninterruptible power supply (UPS). Contact [email protected] for further information.
2.1.2. Power cable
The power cable for the IRmadillo is a permanently connected flying lead passed through a
cable gland; this is located at the rear of the spectrometer. The gland and cable must be
sufficiently protected from loading and twisting. The cable should ideally be routed above
ground to avoid accidental damage.

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Figure 1: Power and communication gland locations for ASM0627-10-Z-Cx-Ex-Gx-D3x
The spectrometer body has an M6 earth attachment point below the probe. This can be used
where local codes require it in addition to earthing through the power supply cable. Please
identify and adhere to any applicable local standards.
WARNING
Failure to properly earth the spectrometer may cause serious
injury or death.
Figure 2: Earthing point for ASM0627-10-Z-Cx-Ex-Gx-D3x
2.2. Purging the IRmadillo
The IRmadillo spectrometer is designed to be continuously purged. This eliminates any
interference in operationcaused by changing levels of water vapour and carbon dioxide (CO2)
within the instrument, both of which interact strongly with infrared (IR) light.
The IRmadillo is fitted with a single body purge inlet and a breather in the probe. The Inlet is
shipped with a blanking plug that needs to be removed before use.

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Figure 3: Purge inlet and outlet locations on ASM0627-10-Z-Cx-Ex-Gx-D3x
The ideal purge gas is dry nitrogen. Alternatively, dry air from a purge gas generator can be
used. The output from this purge gas generator should have a minimum quality according to
ISO8573-1:2010 of Class 1:2:1 (dust:water:oil) or better. Keit can recommend suitable
generators that achieve this outlet air quality; contact suppo[email protected]. Purge gas
generators may include an internal compressor or use factory-supplied compressed air with a
minimum quality of Class 4:4:4 (dust:water:oil).
NOTE
All FTIR spectrometers are very sensitive to water vapour and
carbon dioxide. Even in well-controlled environments, e.g.,
laboratories, environmental changes can be large enough to
cause significant changes in the spectrum. We STRONGLY
recommend purging the instrument at all times.
To purge the instrument:
•Remove the blanking plug from the gas purge inlet on the instrument; this is a push fit
connector.
•Connect a 4mm diameter gas hose to the purge inlet port.
•Ensure the gas tube is connected to a suitable gas supply via a flow meter.
•Adjust the total flow to 0.5 - 2 litres per minute (The pressure drop through the unit is
<1 barg).
•Do not turn off the purge during normal operation; this will impact the instrument’s
performance.
•If the purge tubing is disconnected, the blanking plug must be fitted to the inlet
connection on the probe to maintain the IP rating and exclude dust.
The IRmadillo requires a stabilisation period of >12 hours once powered on and purging
started. This is to allow the internal components to reach a stable temperature and complete
purging. Once fully purged the instrument is very robust against changes in ambient
conditions, provided the purge gas supply is maintained.
2.3. How to connect data communications
Like the power cable, the IRmadillo is supplied with dual flying leads for communication that
are permanently connected through cable glands. You must ensure that the cables are

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sufficiently protected from loading and twisting. The cable should ideally be routed above
ground to avoid accidental damage.
NOTE
Ensure the mains and data communication cable connectors
are dry prior to mating.
NOTE
Keep the dust caps fitted on connectors when not in use.
Never leave an exposed connector.
The communications flying leads provided with ASM0627-10-Z-Cx-Ex-Gx-D3x are Cat7
terminated in female RJ45 connectors. Either socket can be used to form a connection for
DCS or access a network. For DCS guidance refer to the Modbus TCP commissioning guide
(DOC0817) or OPC-UA commissioning guide (DOC0828); for copies contact
[email protected].uk.
To connect, line up the latching surfaces and push together. This forms an IP67 rated
connection. Standard RJ45 connectors can simply be plugged in but an IP rating cannot be
guaranteed.
Figure 4: CNLinko LP16 RJ45 Plug Figure 5: CNLinko LP16 RJ45 socket
2.3.1. Connecting to the internal controller
To set up the IRmadillo in preparation for install, remote access is needed. This is performed
via Remote Desktop Connection from a local-access computer. A connection summary for
Remote Desktop connection is available below. For a detailed access guide contact
[email protected].uk.
The IRmadillo must be connected to the local-access computer either
a) via a common network; or
b) via a direct Ethernet-to-Ethernet connection
In the case of a), the network may need to be configured to allow Remote Desktop access
between the local-access computer and the IRmadillo controller.
This section assumes that your local-access computer is running Microsoft Windows.
However, we understand that Remote Desktop may be configured to work with a local-access
computer running Linux, Mac OS or other non-Windows operating systems.

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To connect to the instrument:
Once you have connected the IRmadillo controller using one of the above configurations, open
Remote Desktop Connection on the local-access computer. This is normally located here:
Start Menu → Windows Accessories → Remote Desktop Connection
Alternatively, you can find it by pressing the Windows key (or CTRL + ESC), then typing
Remote Desktop Connection and selecting the program when it appears. If you require
frequent access, we recommend saving a convenient shortcut to this program.
You should be greeted with a window that looks like this. Click Show Options.
Figure 6: Remote Desktop Connection start window, Show Options highlighted in red
Access details are shared with you as part of the document pack and are unique for each
individual IRmadillo. Contact [email protected].uk if unsure.
•Under Computer, you should enter the ‘Name’ of your computer.
•Under Username, enter the relevant account (Spectrometer User or Administrator).
•Click Connect and Windows will prompt you for a password. Enter the respective
password and click OK.
Figure 7: Login window
You should now have access to the relevant account.

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2.4. Checking for warnings and checking the probe is clean
When you have connected to the powered-on IRmadillo the KeitSpec application should load
automatically. It is important to confirm that the system is working without errors: information
on IRmadillo warnings and errors can be found in DOC0893 KeitSpec Software User Manual
section 1 Getting Started.
Once the system is set up without errors the probe tip must be cleaned, and a background
spectrum must be taken before insertion into the vessel or pipe. If the probe is guaranteed
clean the factory background scan shipped with the instrument –and saved to the desktop of
the controller - can be used. Cleanliness of the probe tip is important to performance; if you
suspect fouling or scale build-up, perform a clean appropriate to your environment.
2.4.1. Cleaning instructions
Rinse the ATR element with a suitable solvent. The choice of solvent will depend on your
process. You may fully immerse the ATR in solvent if needed. The following are suitable:
•Water
•Acetone
•Alcohols
•Surfactant solutions
•Alkanes (hexane, cyclohexane etc…)
•Ethers
Once exposed to a suitable solvent wipe the ATR with a clean cloth. The metal tube of the
probe can also be cleaned by wiping with a cloth.
For hard-to-remove fouling (such as biofilms or dried-on chemicals) Keit recommends an
oxidative acid clean. First clean the ATR using the methods outlined above, then perform the
following:
•Place the PTFE sample cell on the end of the probe and fill with ~4ml of 1 M nitric acid
solution
•Leave to soak for 1 hr
•Carefully remove the acid using a pipette and fill the sample cell with water
•Remove the water using a pipette
•Remove the sample cell and rinse the ATR again with water
•Carefully wipe the ATR with a cloth
It may be necessary to repeat the cleaning steps again if the contaminant has only been
partially removed.
In some cases, it may be necessary to perform an alkali clean on the probe. First clean the
ATR using the methods outline above, then perform the following:
•Place the PTFE sample cell on the end of the probe and fill with ~4ml of 1 M sodium
hydroxide solution
•Leave to soak for 1 hr
•Carefully remove the alkali using a pipette and fill the sample cell with water
•Remove the water using a pipette
•Remove the sample cell and rinse the ATR again with water
•Carefully wipe the ATR with a cloth

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It may be necessary to repeat the cleaning steps again if the contaminant has only been
partially removed.
2.4.2. Recognising if the probe is clean
When looking to see if the instrument is clean, the primary area of interest within the spectrum
is between 800 and 1800 cm-1. This section of the absorbance plot shouldmaintain a relatively
flat line with no consistently repeating peaks. Cleaning Mode can be used to see the effects
of the cleaning process in real time –see DOC0893 KeitSpec Software User Manual Section
2 The Spectrometer Tab.
Figure 8: A clean probe showing no significant peaks within the 800 to 1800 cm-1 region.
Several sharp peaks in the region 800-1800 cm-1 indicate that the probe has not been cleaned
properly.
Figure 9: Sharp spikes within the region indicating an unclean probe
A peak at 1400 cm-1 indicates that there is some water on the probe. This could indicate poor
purge quality.

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Figure 10: Peak indicating the water in the spectrum
A negative peak indicates that although the probe is clean now, it was not clean when the
background was taken. Another background must be taken before any spectra can be
measured.
Figure 11: Negative peaks indicating the background was taken when the probe was unclean or not fully
purged.
2.5. Taking a background
FTIR requires the collection of a background spectrum (also called a reference or baseline
scan) before any absorption scans can be performed. This must be performed before the
probe is inserted into the reaction/process of interest. The process for collecting a reference
scan can be found in DOC0893 KeitSpec Software User Manual Section 1 Getting Started.
2.6. Installation best practice
Having cleaned the probe and taken a background spectrum, the IRmadillo is ready to be
inserted into the reaction/process of interest.
Probe installation is unique for each application. Safe installation of the probe into the process
is the responsibility of the user and should be assessed by a suitably trained person.

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Please refer to the interface drawings of your probe and mounting system for further guidance.
If you have not been provided with interface drawings, please contact [email protected].uk.
To ensure success with installs, it is important to consider the following requirements:
•The IRmadillo needs to be suitably supported. The weight of the instrument is ~18 kg,
and it must be supported using the mounting points at the base, either through a
custom stand or using a Keit Cradle. The probe should not be used to support the
instrument.
•The body of the IRmadillo should not be placed indirect sunlight or near a heat source.
The instrument has internal temperature control, but this rating is limited and model
dependant. Direct heat sources can force the instrument beyond its operating range
and cause damage.
•The IRmadillo must be axially restrained when in the flow. Pressure on the probe will
cause the system to move if not properly restrained along the probe’s axis.
•It is preferable to mount the IRmadillo with the probe positioned horizontally. Mounting
the IRmadillo with the probe pointing downwards risks the formation of bubbles on the
ATR element, and prevents the ATR from coming into full contact with the analyte to
correctly analyse the process liquid.
•Similarly, avoid mounting the IRmadillo with the probe pointing upwards. If there are
any suspended solids in the mixture, there is arisk of these solids settling on the probe
tip, which may result in the spectra not being representative of the process liquid.
•The IRmadillo must be exposed to the flow when in operation. The probe tip must be
positioned in the flow within the pipeline or vessel to perform correctly; turbulent flow
is desired. If the tip is held in stagnant chemistry, building representative chemometric
models will not be possible.
Figure 12: IRmadillo supported and inserted into flow
•The probe must be aligned correctly with the port in which it is placed. It should not be
forced or bent into place as this will cause damage to the instrument.
•The IRmadillo body should not be placed directly in caustic or acidic environments.
The body is made from aluminium and will break down.

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3. MAINTENANCE
There are nouser-serviceable parts inside the IRmadillo. Please contact Keit or our local agent
to arrange service or repair. Service should only be performed by suitably trained engineers.
Probe accessories may contain O-rings, which we recommend replacing annually or, where
worn or damaged, more frequently. See Section 5 Accessories for more information on
accessories.
3.1. Service and support contacts
Website: www.keit.co.uk
Postal address: Keit Ltd.
Unit 4, Zephyr Building
Eighth Street, Harwell Campus
Didcot
Oxfordshire
OX11 0RL
United Kingdom
Telephone number: [phone]
Support email: [email protected].uk
3.2. Maintenance & support programme (MSP)
The MSP is for those customers who purchase an IRmadillo and want the assurancethat their
instrument will receive regular system maintenance to operate smoothly and uninterrupted.
The service package provides a comprehensive set of health checks, upgrades and remote
support to keep the IRmadillo functioning at the highest level.
Keit requires access to the controller in order to provide remote support. If this is not possible,
any issues will require the system to be returned to Keit for diagnosis.
For more information about our maintenance & support programme contact Keit using
[e-mail].
3.3. Spectrum health
The spectrum can be used as a good indication of the health of the instrument.

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3.3.1. Use at high temperature
Figure 13: Probe is heated causing the spectrum to tilt
In Figure 13, the spectrum is tilted, with positive absorbance at lower wavenumbers and
negative absorbance at high wavenumbers and the spectrum is not flat in the region 800-
1800cm-1. This indicates that the probe tip is at a higher temperature now than it was when
the background was taken. This may cause chemometric models to give incorrect results
unless the model uses an appropriate pre-treatment to remove the effect. Any model built by
Keit will have this taken into account.
3.3.2. Emitter ageing
Figure 14: Spectrum is tilted showing signs of emitter ageing
The infrared emitter in the probe is expected to age over its lifetime. The results of this can be
seen in Figure14: the spectrum istilted; the absorbance is positive across the whole spectrum;
and the spectrum is not flat in the region 800-1800 cm-1 (contrast with Figure 8, above). If
evidence of emitter ageing is seen, it may be required to take a new background scan to
remove this effect –contact Keit for advice.

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3.4. Remote health check
Keit can perform an annual examination of your system’s health data remotely to determine if
any servicing needs to be carried out. This includes review of internal diagnostics for warnings
and errors, component performance for signs of premature ageing, and evaluation of
background reference spectra history for signs of operator error or progressive damage.
Remote health checks are offered annually as a part of our MSP.

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4. COMPONENTS
This section contains general information about the IRmadillo spectrometer, such as the
constituent components and internal controller specifications.
4.1. IRmadillo spectrometer
Figure 15: ASM0627-10-Z-Cx-Ex-Gx-D3x front and top of the instrument
(A) Product label
The product label specifies the model of instrument with permissible environmental and
analyte operating conditions, along with applicable certification. Particular attention should be
given to the rated pressure and temperature limits.
(B) ATR element
The diamond ATR element is located at the end of the probe.
(C) Probe
The probe is designed to be installed directly into a reaction vessel or pipe and is made of a
corrosion-resistant metal.
(D) Probe (gas) purge outlet
Allows purge gas to escape the probe. There is a single outlet located on the probe for all
purge gas to escape.

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(E) Earthing point
The spectrometer body has an M6 earth attachment point below the probe. This can be used
where local codes require it in addition to earthing through the power supply cable.
WARNING
Failure to properly earth the spectrometer may cause serious
injury or death.
Figure 16: ASM0627-10-Z-Cx-Ex-Gx-D3x back and base of the instrument
(F) Purge inlet
The spectrometer purge inlet is used to purge both the spectrometer body and the probe at
the same time through a single connection. The connection is a Legris push-fit fitting. Rigid or
fixed piping may be used if the fitting is compatible and mechanical stress is avoided.
More detail on how to purge the instrument is given in Section 2.2 Purging the IRmadillo.
(G) Communication gland
This is the connection from the spectrometer for remote access, network connection or DCS.
More detail on how to connect using the cables is given in Section 2.3 How to connect data
communications.

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(H) Mounting holes
The spectrometer must be supported using the four M8 mounting holes in its base. Optional
feet are provided.
(I) Power cable gland
This is the mains power connection to the spectrometer. More detail on how to connect power
to the spectrometer can be found in Section 2.1 Powering the IRmadillo.
4.1.1. Dust caps
The communication flying leads are provided with dust caps to protect the RJ45 connectors.
When the cable is not in use, these should be attached to reduce the risk of potential damage
to the connectors that may be caused by the local environment.
4.2. Controller specifications
Table 3 - Specifications of the IRmadillo integrated controller
Category
Specification
Integrated
controller
The integrated controller has been optimised for the rugged operation of
the IRmadillo spectrometer; it is not a general-purpose personal computer.
Keit does not recommend the installation of additional software; changes
to the configuration may affect performance and reliability.
User
accounts
There are two user accounts, one with system administrator privileges and
a second ‘standard’ user. The standard user account starts automatically
and is the default account for the KeitSpec software application. The system
administrator account is provided to make changes to the operating system
configuration and install additional software, if required.
Windows
updates
The controller is running Windows 10 LTSC with automatic updates
disabled by default. The local administrator should choose when/if to
update the operating system. A strategy will be required to manage
updates, particularly if the controller is connected to a network.
Anti-virus
There is no anti-virus installed. The controller should only be connected to
internal, protected networks. Install your preferred anti-virus if required
4.3. Storage conditions
When installed with purge and power, the IRmadillo can thermally control its internal
temperatures up to the limit specified on the product label. However, if the system is to be
stored before its use Keitrecommends an air-conditioned environment. Theenvironment must
be non-condensing, with a relative humidity below 95%. The IRmadillo or storage container
should also be out of direct sunlight.
WARNING
Storing the IRmadillo unpowered and unpurged in unsuitable
conditions can cause damage to the instrument. If in doubt,
please consult with Keit