The tried and trusted Extronic dosing pumps from Prominent have been adapted to conform to the new EU Ex directive 94/9/EG. The Extronic model EXBb is available in two versions. The EXBbG model for metering liquid media in factory operations where there is a potential risk of gas explosion and the second EXBbM model for use in fire-hazardous underground excavation work.
Both versions incorporate a manual control system with potentiometer for adjusting the stroke speed as well as an external switch and external ana-logue drive. Another feature is a pause option in the manual control system, which can be used to connect or disconnect the pump via a zero volts switch. All manual system additions are available as optional extras and are intrinsically safe. To further enhance its current range of application, Prominent has developed a pump construction with safety dia-phragm for gas odorising.