Gill Sensors produces ultrasonic flow sensors that are suitable for harsh environments, which take measurements in both directions and use difference in the time of flight to calculate flow velocity. Available products include the mass airflow sensor, which is capable of measuring bi-directional flow up to 600 kg/hr with a resolution of 0.001 kg/hr and turn-down ratio >1,000:1; and also a medical gas flow sensor for anesthesia and ventilation monitoring, which provides a flow range from 0.2 to 150 l/min, accuracy +/-3%, and resolution of 0.01 l/min.

Icenta is a UK-based supplier of flow meters, level sensors and control instrumentation used in a variety of process industry and manufacturing applications. Products include a variety of flow meters and sensors for monitoring fuel oil consumption, small quantity sensing, low flow rate sensors and more.