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DOC0945 (22 August 2022 15:28) 

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3.3.1.  Use at high temperature 

 

Figure 12: Probe is heated causing the spectrum to tilt  

In  Figure  12,  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 13: 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 Figure 13: the spectrum is tilted; the absorbance is positive across the whole spectrum; 
and  the  spectrum  is  not  flat  in  the  region  800-1800  cm

-1

  (contrast  with  Figure  7,  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. 

Summary of Contents for IRmadillo ASM0627-09-Z-Cx-O-G-D2x

Page 1: ...22 August 2022 15 28 DOC0945 IRmadillo User Manual ASM0627 09 Z Cx O G D2x ASM0627 09 Z Cx O G D3x www keit co uk support keit co uk...

Page 2: ...ontroller 8 2 4 Checking for warnings and checking the probe is clean 9 2 4 1 Cleaning instructions 9 2 4 2 Recognising if the probe is clean 10 2 5 Taking a background 11 2 6 Installation best practi...

Page 3: ...y 26 5 3 2 Installation 27 5 3 3 Maintenance 28 5 4 Port tube ASM1487 29 5 4 1 Safety 29 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...

Page 4: ...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 mean...

Page 5: ...0 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 du...

Page 6: ...ide 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 Ta...

Page 7: ...RNING Failure to properly earth the spectrometer may cause serious injury or death Figure 2 Earthing point for ASM0627 09 2 2 Purging the IRmadillo The IRmadillo spectrometer is designed to be continu...

Page 8: ...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...

Page 9: ...n the supplied extension cable Ensure the key on the plug align with the keyways in the connector and rotate the shell to complete the connection Figure 4 Souriau in line plug Figure 5 Souriau in line...

Page 10: ...thers 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...

Page 11: ...y 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 7 A clean probe show...

Page 12: ...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 T...

Page 13: ...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 AT...

Page 14: ...United Kingdom Telephone number 44 0 1235 431260 Support email support keit co uk 3 2 Maintenance support programme MSP The MSP is for those customers who purchase an IRmadillo and want the assurance...

Page 15: ...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 Figu...

Page 16: ...the connectors are disconnected it is recommended that the connectors are cleaned before being re connected The fibre connectors are cleaned with a pen as shown below Figure 14 Fibre cleaning pen NOT...

Page 17: ...n The pen fits over each of the two male fibre ferrules and is aligned by the transparent cover Push and click once on each ferrule Figure 17 Using the fibre cleaning pen to the Souriau plug Once both...

Page 18: ...Page 17 DOC0945 22 August 2022 15 28 www keit co uk Back to Table of Contents Figure 18 Reconnecting the Souriau connectors Locknut Align keyways...

Page 19: ...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 tem...

Page 20: ...r 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...

Page 21: ...rly 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...

Page 22: ...atile substances it is recommended to keep the plugging cap in place during use Figure 21 Sample cell fitted to IRmadillo probe 5 1 1 Maintenance Inspect the O ring regularly and replace if it has vis...

Page 23: ...from the main process passing the liquid in front of the ATR This is an alternative to installing the IRmadillo into a main pipeline It is fixed in place using a tri clamp that locates over the rear o...

Page 24: ...ow It is fixed in place using a tri clamp that locates over the rear of the flow cell and two semi circular collars that fit around the probe the clamp does not need to be tightened with significant f...

Page 25: ...ed for lab work where flow rate and volume are low It is fixed in place two collars that locate into a groove on the probe at the rear of the flow cell these are held in place by two screws The flow c...

Page 26: ...age Prevent load being applied to the instrument by the installation Connections must not apply forces to the flow cell or the IRmadillo probe Such loads increase the likelihood of leakage and could c...

Page 27: ...ctions completely to ensure safe use of the flanged probe Figure 25 IRmadillo with a welded flange probe 5 3 1 Safety WARNING The flange and hub form a seal with the process pipework and as such are s...

Page 28: ...the process pipework The gasket material must be chosen to be compatible with the pressure and temperature range of the process media and must be chemically compatible WARNING Choice of gasket materi...

Page 29: ...revent a leak from your pipework 5 3 3 Maintenance Keit recommends regular inspection of the integrity of the welds on the front and rear in line with local safety procedures Inspection of the sealing...

Page 30: ...o be tightened with significant force A blanking plug is also provided to seal the end if the spectrometer is withdrawn from the pipeline For technical drawings contact Keit at enquiries keit co uk Fi...

Page 31: ...rt tube This is held in place using the sanitary tri clamp Support the spectrometer on a suitable mounting frame that aligns the probe with the flange port that it will be fitted to The probe is inser...

Page 32: ...process media Keit recommends regular inspection of the integrity of the welds on the front and rear in line with local safety procedures CAUTION The spectrometer weighs 18kg The flange must not be u...

Page 33: ...u are advised to check with Keit before installing on a new process Before beginning installation ensure that the gasket is in good condition and that the sealing faces are not scratched or dented If...

Page 34: ...the spectrometer into a pipeline with bolting positions for lap joint flange and hub complying with ASME ANSI B16 5 or other flange options An optional ball valve is also available Figure 30 IRmadillo...

Page 35: ...chemically compatible WARNING Choice of gasket material must be appropriate for the chemistry and process being used The probe body and hub are manufactured from Hastelloy which is resistant to many a...

Page 36: ...it is not corroded by aggressive chemicals during maintenance or installation 5 7 Inclined Stand ASM0916 The inclined stand is designed for using the spectrometer as a bench top instrument for offlin...

Page 37: ...cable s 5 8 Ingold DN40 A version of the IRmadillo spectrometer probe is available to allow connection to reaction vessels or process pipework fitter with an Ingold DN40 port The probe tube is fitted...

Page 38: ...l Hastelloy C276 Port Size DN40 Ingold port Port Material 1 4435 acc to BN2 and 316L acc to ASME BPE table DT3 5 8 2 Installation Support the spectrometer on a suitable mounting frame that aligns the...

Page 39: ...ground scan taken with insufficient averaging Experiment with increased background scan acquisition time Negative peaks in spectrum Background scan taken with a dirty probe Clean ATR element and take...

Page 40: ...olution Unrepeatable measurements Damage to ATR element Contact Keit Contamination of ATR element Clean the probe See Section 2 4 Checking for warnings and checking the probe is clean Dip probe misali...

Page 41: ...dity 5 to 90 at 25 C Monitor Resolution The recommended monitor resolution is 1280 x 1045 pixels or higher Mains Power 90 to 264 Volts AC 47 to 63Hz Power consumption 20W internal power supply rated t...

Page 42: ...hen power is ON LED off when no power supplied DATA LINK LINK LED green when fibre optic link is established between controller and fibre optic converter DATA LINK HOST LED green continuous when fibre...

Page 43: ...standard with 4 retaining fasteners This is to prevent tampering with 1 x Ethernet 4 x USB 2 x PS2 and HDMI ports Information for Fibre Optic Patch Panel The fibre optic connectors are LC connectors m...

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