Multi-function multi-application single line flow sample system, continuously monitoring up to 5 gas types from the harshest of environments. The GasVac® Solo has a unique system controller which enables three main functions to be selected according to site conditions and sampling requirements: sampling time, clean air purge time and condensate drain cycle time. All sensor 4~20mA signals are maintained during purge periods, therefore enabling continuous gas readouts regardless of the selected function time periods. The GasVac® Solo offers low cost, high reliability with proven technology, the complete package for any application.