Corus is a key element in the whole Itron chain, from the meter to billing data. It converts the actual volume measured by the gas meter to base conditions. Corus complies with EN12405-1 and EN12405-1/A1, providing extremely accurate measurement over the whole temperature and pressure ranges and many advanced functions including a graphic display, a large integrated database and various remote reading solutions through PSTN, GSM, GPRS or Ethernet TCP/IP solutions.