M+W Instruments™ was founded in 1988 and has always specialized in thermal mass flow meters and controllers for gases and has been a Bronkhorst® company since 1997. M+W Instruments thermal mass flow measurement principle is different from the bypass sensor principle used in our Bronkhorst High Tech mass flow meters and controllers and provides for different benefits.

Principle of Through-Flow Measurement

The mass flow meters and controllers consist of a metal body with a straight through flow path. Two sensors are encased with stainless steel and protrude inside this bore; one is designed as a heater and the other one is designed as a temperature probe.

A constant difference in temperature (delta T) is created between the two sensors. The heater energy required to maintain this delta T is dependent on the mass flow. The working principle is based on King's law of the ratio between the mass flow and the heater energy. That means the higher the flow, the more energy is required to maintain the chosen delta T.

The pressure drop over the instrument's measurement chamber is almost comparable to a straight run of pipe of the same diameter and is thus almost negligible.

Our instruments are suitable for use in the chemical and pharmaceutical industries, in mechanical engineering and semi-industrial applications, as well as in gas production, food and beverage industries.

Features

» Direct inline measurement principle

» Less sensitive to dirt and humidity

» Usable for virtually every kind of gas or gas-mix

» Mass flow measurement and control for a wide scope of applications

» Optional Flow-Bus, DeviceNet™, Profibus-DP®, ModBus-RTU

» Precise control mode and good response times

» Compact and robust design

» IP65 for full product range

» Bodies available in aluminum and stainless steel (AISI 316) for corrosive gases

» Sensor made of stainless steel

» No inlet pipe required

» Maintenance-free

« Customized adjustable multi-functional display: actual flow, totalizer with memory and reset, alarm, setup and much more

« IP65 compliant

Industries / Applications

» Analytical instruments

» Biogas applications

» Burner controls

» Coating plants

» Exhaust gas measurement

» Gas consumption measurement

» Gas monitoring systems

» N2/O2-generators

» Paint-spray lines

» and more

Aeration is a process which circulates, mixes or dissolves air (or other gases) in a liquid or other substance.

The robust and highly repeatable D-6300 Mass Stream™is a perfect fit for any aeration application.

Industrial sectors:

* Ice Cream / Whipped Cream

* Beverage

* Soil

* Waste Water Treatment

* Fermentation

* Fish or algae farms

Application requirements:

* High repeatability

* Robustness

* Dirt resistivity

* Easy to check actual flow

* Gas totalization

* Ingress protection class IP-65

In 2013 Bronkhorst USA will be exhibiting our latest products and speaking about applications in a variety of cities.

We look forward to seeing you at one of these shows.