WILKS ENTERPRISE Inc.
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Frequently Asked Questions

How often do I need to recalibrate the InfraCal Filtometer?

The calibration should last for several years.  We recommend checking the calibration as often as needed to feel confident of the performance.
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Do the InfraCal Filtometers come calibrated?

For non-standard applications, the customer typically does their own calibration.  Once standards are made, entering the calibration into the analyzer is a simple process. There are detailed instructions in the manual and we are available to assist you with any questions you may have.  For some applications, the filtometers can be supplied with a non-certified factory calibration.
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Do the InfraCal Filtometers require installation, commissioning or training?

Our InfraCal Filtometers are portable, easy-to-use instruments requiring no installation or commissioning and minimal training as they are designed for use by non-technical personnel.  All of our manuals and procedures are available on our website for use prior to purchase.  On-site group training is available for a fee.
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How do I know the wavelength or sample stage required for my application?

Please contact us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it and we will be happy to assist you with determining the specific requirements for your application.
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Does Wilks rent analyzers?

 Yes, we do have a rental program available for customers in the US or Canada.  Please send an inquiry to This e-mail address is being protected from spambots. You need JavaScript enabled to view it if you are interested in obtaining additional information on renting an InfraCal Analyzer.
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How long does the source last?

The source in an InfraCal Model CVH is a tungsten source with a lifespan of generally 5 or more years.  However,  the source falls under the warranty coverage on the InfraCal Analyzers, which  is a one year factory warranty.
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What is the warranty on the InfraCal Filtometers?

All of our InfraCal Filtometers come with a one year factory warranty.  Please contact Wilks Enterprise for a copy of the warranty if you wish to obtain it prior to purchase.  Extended warranties are available for purchase for an additional one or two years.  The extended warranties can only be purchased at the time the analyzer is purchased.
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My InfraLog Printer will not work.

1.  Check the back of the InfraCal Analyzers and be sure the "Cal Lock" switch is in the "I" position.  

2.  Check to see that the printer light is on.

3.  The printer comes with a manufacture warranty.  For additional trouble shooting questions contact the Manufacturer:  Weigh-Tronix, Fairmont, MN  Tel:  507-238-4461, e-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it
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When I press run nothing happens.

If you press and hold the run button rather than press and release, it will go into the timer-setting mode.  To reset the timer to the appropriate evaporation time, use the up and down arrows on the buttons.  Once the timer is set, press the "CAL" button and the display will return to "idle".  Please refer to section 3.4.2 in the Users Guide for a detailed description.
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Where can I obtain an additional manual for the InfraCal Filtometer?

All of our manuals are available on our website.  The User's Guide for the InfraCal Filtometer can be obtained by pasting this link into your browser bar  http://wilksir.com/pdf/InfraCalFiltometerManual.pdf
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Will the power supply work in any country?

The power supply for the InfraCal Model CVH is a Universal Switching Power Supply, the input is 100 - 240v, 50/60 Hz.  However, you may need to purchase an adapter plug locally.
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Can I use the External 12 v Battery Pack outside of North America?

The battery pack is supplied with a US AC adapter that requires a 115v 60 Hz input to recharge the battery.  Customers using the battery pack outside the US would need to supply their own converter with the appropriate outlet to convert their country's power to the 115v 60 Hz.
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Does Wilks sell used equipment?

No, we do not sell used equipment.  Our analyzers are generally in use for more than 7 years and it would be more costly to refurbish an old analyzer than to build a new one.
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