Bronkhorst UK Ltd

Vapour Flow

VAPOUR FLOW CONTROL

Our unique and patented 'CEM' technology, which stands for Controlled Evaporation Mixing, is developed for accurate vapour flow control. Traditional bubbler systems are often not capable of handling sufficient quantities of liquid with a low vapour pressure, or perform in an imperfect way. Moreover, they cannot instantaneously provide vapour of a mixture of liquids with different vapour pressures. These issues areovercome with our vapour delivery solutions.

Bronkhorst's evaporation technology is fast, accurate, highly repeatable and efficient.

CEM-Technology: Controlled Evaporation Mixing

The CEM-System (Controlled Evaporation and Mixing) is an innovative Liquid Delivery System (LDS) that can be applied for atmospheric or vacuum processes. The vapour generation system consists of a (thermal or Coriolis) liquid flow controller, an MFC for carrier gas and a temperature controlled mixing and evaporation device. The system is suitable for mixing liquid flows of 1-1200 g/h resulting in saturated vapor flows of 50 mln/min up to 100 ln/min. This vaporiser system can replace bubblers. New opportunities created with the CEM-system: mixtures can be evaporated and even solids, dissolved in solvents can be vaporised successfully.

Features

• accurately controlled gas/liquid mixture
• fast  response
• high  reproduceability
• very stable vapour flow
• flexible selection of gas/liquid ratio
• lower working temperature than conventional systems
• optional control by PC/PLC (RS232/fieldbus)