System Requirements

The NDIR Utilities require Microsoft Excel 32-bit. Excel & Office versions from 2000 to 2016 inclusive are supported, on Microsoft Windows XP onwards. Users with only 64-bit Excel available or those with large data-sets, please contact Cambustion.

Current Version

The current version of the utilities is 3.0.

Installation Instructions

  1. Download and unzip the compressed file: This contains a self-extracting executable.
  2. Double-click the NDIRUtilitiesV3.exe self-extracting zip file. This will copy files to the C:\Cambustion\NDIRUtilities directory.
  3. The NDIRhelp.chm help file should be automatically opened when the file transfer is complete. Follow the installation instructions on the "Installation" page to activate the Excel add-in.


Comments and suggestions for improvements to the NDIR Utilities are always welcome.

Please address these by email to the Cambustion Product Support Group at