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Related Manuals for PIKE Technologies IRIS ATR
Summary of Contents for PIKE Technologies IRIS ATR
- Page 1 IRIS User Guide The PIKE IRIS ATR Installation and User Guide...
- Page 2 ATR IRIS Installation and User Guide...
- Page 3 The information in this publication is provided for reference only. All information contained in this publication is believed to be correct and complete. PIKE Technologies, Inc. shall not be liable for errors contained herein nor for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
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Page 4: Table Of Contents
ATR IRIS Installation and User Guide Contents Introduction ............................ 1 ATR Outline ............................. 2 Unpacking Your Accessory ......................3 Packing List ............................3 Packing List (Continued) ......................... 4 Assembly ............................5 ATR Crystal Plate Installation ......................5 Clamp Installation ..........................6 Installation ............................ - Page 5 ATR IRIS Installation and User Guide Specifications ..........................25 Replacement Parts and Options ....................26 Crystal Plates ..........................26 Pressure Clamp ..........................26 Other Attachments ........................26...
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Page 6: Introduction
PIKE Technologies offers two diamond plate options. Our diamond ATR plate with an anti- reflective coated prism faces is the most popular with a spectral range of 4000 – 400 cm The function of the anti-reflective coating is to optimize energy throughput. -
Page 7: Atr Outline
ATR IRIS Installation and User Guide ATR Outline Figure 1. Overview of IRIS ATR components. PN 350-027018-04 P a g e... -
Page 8: Unpacking Your Accessory
ATR IRIS Installation and User Guide Unpacking Your Accessory In order for you to quickly verify receipt of your accessory, we have included a packing list. Please inspect the package carefully. Contact PIKE Technologies immediately if any discrepancies are found. Packing List... -
Page 9: Packing List (Continued)
Ge Crystal Plate 027-2120 The IRIS ATR base optics assembly has attached purge tubes. Some base optics assemblies may appear different due to specific baseplate mountings for your FTIR. The pressure clamp, press tips, purge tubing kit, ATR crystal plate, and wrench set are packed separately in the IRIS packaging. -
Page 10: Assembly
ATR IRIS Installation and User Guide Assembly Your IRIS ATR accessory has been configured to fit the sample compartment of the FTIR make/model specified in the sales order. Attach the IRIS body to the baseplate. If purging is required, press the included blue tubing onto the brass barb located on the purge tube. -
Page 11: Clamp Installation
ATR IRIS Installation and User Guide Clamp Installation The high-pressure clamp is required when testing solid samples to establish intimate contact between the ATR crystal and the sample. To install, place the clamp over the dowel pins located on the backside of the IRIS base (see Figure 3). Secure using the two M4 hex screws (M4 wrench included). -
Page 12: Installation
ATR IRIS Installation and User Guide Installation The IRIS ATR accessory has been aligned and tested at the PIKE Technologies facility on the make of your FTIR spectrometer to ensure that it performs to specifications. However, some variation in optical alignment can occur from spectrometer to spectrometer. To allow for this difference, alignment screws are located within the IRIS ATR base optics assembly for fine-tuning once the accessory is installed in the spectrometer. -
Page 13: Alignment
ATR IRIS Installation and User Guide Alignment The IRIS ATR accessory may not require any alignment when installed (see page 11 for minimum energy throughput values). However, should you choose to fine-tune the accessory in an effort to improve throughput, a field alignment can be performed using the 3/32”... -
Page 14: Field Alignment Procedure
ATR IRIS Installation and User Guide Field Alignment Procedure This is a one-time alignment procedure that optimizes the IRIS ATR to work with an individual optical bench. Once completed, the alignment does not have to be repeated unless accessory adjustments have been moved or it is to be used in a different FTIR instrument. - Page 15 ATR IRIS Installation and User Guide Left-to-Right IR Beam-Direction Spectrometer 5. Adjust FM screw to maximize the energy. 4 Tilt NOTE: The transmittance amplitude maximum does not occur at 1000 cm . Step 3 specifies 1000 cm purely as a reference point at which the impact of alignment adjustments can be evaluated.
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Page 16: Performance Verification
% transmittance. Table 2 shows the expected IRIS performance specifications for each available ATR crystal type. Table 2. Minimum IRIS energy throughput value and spectral range for IRIS ATR crystals. Crystal Plate Type Part Number Throughput at 1000 cm... - Page 17 ATR IRIS Installation and User Guide Figure 5. Representative IRIS diamond ATR crystal throughput spectrum. The throughput spectrum of each individual IRIS accessory may vary but should match or exceed the specifications listed in Table 2. NOTE: The energy throughput spectrum depends on the ATR crystal (diamond or Ge). An example throughput spectrum for diamond is shown in Figure 5.
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Page 18: Sampling Procedures
Once the measurement has been made, remove the sample from the crystal and clean the surface of the crystal and the surrounding plate area with a suitable solvent. Note that the High-Pressure Clamp for the IRIS ATR can be swung to the side to give more access to the ATR crystal area. -
Page 19: Configuration For Liquid Sampling
It is desired that the sample be removed without scratching the surface of the crystal. Figure 6. Example of a toluene spectrum collected using the IRIS ATR. Once the measurement has been made, remove the sample from the crystal and clean the surface of the crystal and the surrounding plate area with a suitable solvent. -
Page 20: Liquid Sampling Tools
Slide the volatiles cover between the retainer disk and the U- shaped bridge. Liquids retainer may be used with the high-pressure clamp only. Figure 7. IRIS ATR Volatile Liquids Retainer (left) and Flow-Through Attachment (right). For continuous sample monitoring, or for applications where sample needs to be completely enclosed for safety or reactivity reasons, an optional Flow-Through Attachment is available. -
Page 21: Configuration For Solid Sampling
ATR crystal surface. This is achieved by using the high-pressure clamp ordered with your IRIS ATR accessory. With the sample in place on the crystal, lower the pressure tip by turning the clamp knob so that the clamp tip is in contact with the sample. - Page 22 Figure 8. Example of spectrum of polystyrene collected using IRIS ATR. NOTE: The IRIS ATR high-pressure clamp has the ability to swing sideways for ease of accessing the crystal surface for cleaning and to safely remove the ATR crystal plate.
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Page 23: Pressure Clamp Tip Attachments
The accessory is shipped with the swivel tip attached to the pressure clamp ordered with the IRIS ATR accessory. This tip features an end cap mounted onto a small ball joint. Such design allows the press tip to move and adjust its position to the shape of the sample and maintain the sample position parallel to the crystal surface. -
Page 24: Crystal Cleaning
ATR IRIS Installation and User Guide Crystal Cleaning The solvent used for cleaning your crystal is dependent on the sample that has been analyzed. In all cases it is best to attempt to clean the crystal with the mildest solvent possible. -
Page 25: Atr Spectra
ATR IRIS Installation and User Guide ATR Spectra ATR spectra are similar to transmittance spectra. A careful comparison of ATR spectra and transmittance spectra reveals that the intensities of the spectral features in an ATR spectrum are of lower absorbance than the corresponding features in a transmittance spectrum and especially in the high wavenumber (short wavelength) region of the spectrum. -
Page 26: Atr Correction Post-Processing
ATR IRIS Installation and User Guide Clearly in this example the sample is too thick for transmittance analysis because most of the IR spectrum exhibits a Transmittance < 1%. However, simply placing the thick sample on the ATR crystal and applying pressure provides sufficiently good contact for the evanescent wave to penetrate into the sample a short distance, resulting in a high-quality ATR Transmittance spectrum (upper red spectrum) free of spectral regions of complete IR beam absorbance. -
Page 27: Useful Equations
ATR IRIS Installation and User Guide Useful Equations The depth of penetration (�� ) provides a relative measure of the intensity of the resulting �� spectrum and is expressed by the following equation: �� �� �� 2��( �� ������ θ − �� Where λ... -
Page 28: Crystal Atr Materials
ATR IRIS Installation and User Guide Crystal ATR Materials Diamond Diamond is one of the most rugged optical materials. It can be used for analysis of a wide range of samples, including acids, bases, and oxidizing agents. Diamond is also scratch and abrasion resistant. -
Page 29: Precautions
ATR IRIS Installation and User Guide Precautions Mirrors In order to provide the maximum reflectivity in the infrared, with the minimum spectral interferences, the mirrors used in this device are gold-coated. Normally, these mirrors will not require cleaning, since they are contained within the housing of the accessory. If they do need cleaning, please contact PIKE for recommendations. -
Page 30: Environmental Ratings
ATR IRIS Installation and User Guide Environmental Ratings Installation Category II Transient over-voltage Pollution Degree 2 Temporary conductivity caused by condensation Altitude Limit 2,000 meters Use “Indoor” use Ambient Temperature 40 °C max Humidity 80% RH non-condensing Specifications ATR Crystal Choices Diamond, germanium Crystal Plate Mounting User changeable plates Crystal Type Monolithic Diamond Set Mechanical With PTFE Seal... -
Page 31: Replacement Parts And Options
ATR IRIS Installation and User Guide Replacement Parts and Options The following parts and options may be ordered for the IRIS ATR accessory. Crystal Plates Part Number Description 027-2100 Diamond Crystal Plate 027-2110 Diamond Crystal Plate, Extended Range 027-2120 Ge Crystal Plate...
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