Coriolis Mass Flow Meters for small flow rates for Zone 1 applications Introduction Bronkhorst® manufactures low-flow Coriolis Mass Flow Meters and Controllers for gases and liquids. The product range offers true mass flow in a range from 5 g/h up to 600 kg/h (Full Scale values). The mini CORI-FLOW™ Series M12-M14 are designed for capacities from 100 mg/h up to 30 kg/h. This compact mass flow instrument can be built in a flameproof (Ex d) housing for use in IECEx and ATEX Zone 1 hazardous areas. All electrical instrument connections are available on screw terminals in an increased safe (Ex e) housing connected to the flameproof housing. External actuators can be connected to the integrated flow controller. IECEx and ATEX approval The mass flow meters, operating via the Coriolis principle, are now available with IECEx and ATEX approval II 2 G Ex d e IIB T6 Gb for use in hazardous areas. Hereto the instrument is built in into a rugged enclosure with separated compartment for the electronics. The flow meters, suitable for both liquid and gas flow applications, cover flow rates from 0,1 g/h to 30 kg/h and can be used in systems with pipeline pressures up to 138 bar (1987 psi). mini CORI-FLOWTM built in an Ex d housing for use in hazardous areas. The unique design of the miniature Coriolis sensor features superior response time and high accuracy, irrespective of changing operating conditions with regard to pressure, temperature, density, conductivity and viscosity. Features > irect mass flow measurement, d independent of fluid properties > fast and stable control > high accuracy, excellent repeatability > ulti-range: easy on site re-ranging via digital interface m (effective turndown 2000:1, typical XM13) > additional density and temperature outputs > bi-directional measurement > ommunication: RS232 (optional fieldbus communication: C Modbus, PROFIBUS DP, DeviceNet™, FLOW-BUS) > ECEx and ATEX approval II 2 G Ex d e IIB T6 Gb I for use in Zone 1 hazardous areas > optional: display modu

Technical specifications Flow ranges Unit XM12 Minimum full scale [g/h] 5 Nominal scale [g/h] 100 Maximum full scale [g/h] 200 Minimum flow [g/h] 0,1 Rangeability meter 1:100 Rangeability controller ≥ 1:50 Electrical signals - All instrument connections are wired to screw terminals - Valve/pump controller output Power supply +15…24 Vdc ±10% Max. ripple recommended: 50 mV tt Power consumption Meter: 3 W; Controller: max. 7 W Analog output / command 0…5 (10) Vdc or 0 (4)…20 mA (sourcing output) On request: Ex i output 4…20 mA Digital communication RS232; Optional fieldbus communication: Modbus,...