UltraRAE 3000 User’s Guide22.4 MeasurementThe sub-menus for Measurement are Measurement Gas andMeasurement Unit.22.4.1 Meas. GasMeasurement gases are organized in four lists:• My List is a customized list of gases that you create. It contains amaximum of 10 gases and can only be built in ProRAE Studio ona PC and transferred to the instrument. Note: The first gas in thelist is always isobutylene (it cannot be removed from the list).• Last Ten is a list of the last ten gases used by your instrument.The list is built automatically and is only updated if the gasselected from Custom Gases or Library is not already in the LastTen. This ensures that there is no repetition.• Gas Library is a library that consists of many of the gases foundin RAE Systems’ Technical Note TN-106 (available online atwww.raesystems.com).• Custom Gases are gases with user-modified parameters. UsingProRAE Studio, all parameters defining a gas can be modified,including the name, span value(s), correction factor, and defaultalarm limits.1. Scroll through each list by pressing [N/-].2. Press [Y/+] to select one (My List, Last Ten, Gas Library, orCustom Gases).65
