GKM C4000 Combination Cold Water Meter – a meter combining two outstanding GKM metering technologies into one extremely compact unit, the GKM C4000 features two inductive registers for improved output performance and security, highly accurate bulk flow metering for applications with large variations in flow rate as well as a compact design for easy installation. The GKM C4000 is also compatible with Emeris PR6 and PR7 inductive pulse transmitters, and other common ancillary devices like data loggers and AMR systems