OPTIMASS meters are the only SIL 2/3 devices with Bluetooth^® communication. It offers secure and simple wireless device operation without process interruption. All KROHNE Coriolis meters come with the EGM feature enabled. This guarantees increased reliability of your flow measurement and ensures maximum uptime of your process in a multiphase fluid condition. Depending on the sensor configurations, KROHNE Coriolis meter sizes range from 1/25th of an inch to 16 inch.