This article introduces a new intelligent data acquisition system called ALPHA900series, which manufactured by 304th institute of China Aviation Industry Corporation and ADAScompany of UK. It sums up the advantages of the data acquisition systems in 9O's,such as variable bytelength, programmable intelligent front, connections with temperature compensation and so on. Everymodule in this scries has its special function. It has been put into production successfully and used forprocess monitoring, condition monitoring or machine monitoring. Connected by low cost RS485network,the ALPHA 900 modules supply accurate measurement and control for temperature,pressureand strain along with data events and frequency. It also has attractive ratio of performance and price.