Ex-proof Coriolis mass flow meters - cpp - chemical plants & processes

Instrumentation & Automation

Ex-proof Coriolis mass flow meters

Bronkhorst High-Tech released an explosion proof version of its Mini Cori-Flow Ex d series of Coriolis mass flow meters for low flow rates Picture: Bronkhorst

Bronkhorst High-Tech released a new version of its Mini Cori-Flow Ex d series of Coriolis mass flow meters for low flow rates, suitable for use in hazardous areas. The compact flow meters are built in into a rugged, flameproof (Ex d) enclosure with separated compartment for the electronics in type of protection increased safety (Ex e), having an Atex as well as an IECEx approval. Besides the standard RS232 digital communication it is now possible to equip the instrument with a fieldbus interface (Modbus, Profibus DP, Devicenet, Flow-Bus) and, on request, an intrinsically safe (Ex i) 4…20 mA output. Furthermore the instruments offer additional functions such as alarms, totaliser and batch dosing.

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(a). The design of the miniature sensor features superior response time and high accuracy, irrespective of changing operating conditions with regard to pressure, temperature, density, conductivity and viscosity. The Coriolis flow meters offer integrated PID control for close-coupled control valves or pumps, thus constituting compact control loops. The mass flow meters feature fluid temperature and density as secondary digital outputs.


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