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Pump it Up
Bronkhorst Integrated Liquid Dosing System
 Liquid dosing systems, comprising a flowmeter, pump and control package, offer a precise, automated method of proportionately dosing reactants, catalysts and other additives into a main fluid stream, without the need to pressurize the liquid source.
They are widely employed in the chemical, offshore, food processing, pharmaceutical and water industries, as well as analytical laboratories.
However, there is inherent difficulty in sourcing the components separately, then integrating them together, let alone pinpointing exact spheres of responsibility among the different suppliers should the system fail. Now, Bronkhorst have introduced fully integrated liquid dosing systems, which are built from carefully matched components, factory tested by ourselves and delivered as a complete working system, ready for installation from inlet to outlet. It offers a highly cost-effective solution for dosing applications and no quibble single point responsibility for all components.
Our dedicated dosing systems cover a liquid flow range from mere nanoliters, right up to a substantial 600 kg/h. Each consists of a flowmeter from the proven LIQUIFLOW ® or CORI-FLOW® series, including integrated PID controller and batch counter, together with a gear pump, a check valve to avoid backflow, a filter of the correct mesh type and size, and all interconnecting material.
For smaller flow ranges, we fit the Bronkhorst LIQUI-FLOW® rotary displacement pump, which is virtually pulsation-free in operation and readily applied for low viscosity fluids. In addition, a complete series of pumps is offered for applications that require higher flow rates, higher pressures, wide control ranges or entail aggressive fluids.
To guarantee safe use and long durability of the pump unit, the mass flow instrument has its response alarm enabled to stop the pump when flow is not within a pre-set band or if there is a blockage downstream.
System control is achieved by using the integrated controller function on the pc-board of the flowmeter, which can be optionally equipped with various fieldbus interfaces. It all adds up to a highly accurate, thoroughly dependable solution.
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BRIGHT Idea
Local Display and Control
 The BRIGHT Readout/Control module offers a modern, economical alternative for peripheral Readout/Control electronics with integrated power supply.
The module not only allows reading of actual and total flow, simultaneously, but also features local operation, i.e. change of setpoint, counter reset, setting of engineering units, fluid name and tag number, etc.
Four push-buttons at the right side of the device give access to a user-friendly menu. The bright 1.6" display is clearly visible over a wide angle, due to state-of-the-art OLED technology.
The weatherproof (IP65) housing makes the module suitable for use in industrial areas and the module can be mounted on the instrument or, using an optional mounting kit, on an adjacent wall or panel and on the pipe work.
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It's Just a Phase...Shift
Coriolis Mass Flow Meters/Controllers
Bronkhorst High-Tech, specialists in low flow measurement and control, designed the CORI-FLOW® series mass flow metering instruments to provide high accuracy in three classes:+/- 0.2%, +/- 0.5% or +/- 1.  0% of Reading.
CORI-FLOW® utilizes a patented, advanced Coriolis type mass flow sensor to achieve unsurpassed performance, even with changing operating conditions in pressure, temperature, density, conductivity and viscosity. The instruments are offered as separate flow meters or with close-coupled control valve or pump, thus constituting a compact Coriolis-type mass flow controller.
The instruments have analog (0-5 Vdc / 4-20 mA) and RS232 output as standard and can, as options, be equipped with interface to Profibus-DPR, DeviceNetTM, Modbus-RTU or FLOW-BUS.
The CORI-FLOW® internal tubing forms part of an oscillating system. When a fluid flows through the tubing, Coriolis forces cause a variable phase shift between the loops, which is detected by sensors and fed into the integrally mounted pc-board. The resulting output signal is strictly proportional to the real mass flow rate.
CORI-FLOW® instruments are applied in process fluid measurement or control systems in food, (petro-) chemical and pharmaceutical industries, in fermentation installations, in semiconductor processing and in fuel cell technology.
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Good to Know
Calculating Conversion Factors
 When sizing and calibrating a mass flow meter or controller, one needs to use a specified fluid as the reference. As the fluid in an application will very often be different from the reference fluid, a conversion factor between the two fluids must be used. Bronkhorst uses Air as our reference gas and Water as our reference liquid.  Bronkhorst developed a unique database, consisting of fluid data of over 600 fluids. Using application software routines various calculations can be made on-line at our internet site www.fluidat.com
We invite our customers to visit this site for a free registration. Upon receipt of your login details you will be able to calculate conversion factors/tables for Bronkhorst thermal gas & liquids flow meters, calculate Kv-values and orifice sizes for Bronkhorst control valves, calculate the pressure drop across in-line filters and perform calculations relevant to our CEM evaporation system.
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