Mass Flow Controller includes zero drift detection.

Press Release Summary:

Available on Model 7950S Mass Flow Controller, Zero Drift Diagnostic tool monitors flow signal during no-flow conditions. Alarms notify user when out-of-limits condition has been detected. Zero drift can be accurately detected because diagnostic has ability to monitor both positive and negative flow signals. Configuration tool application is provided that allows user to customize Zero Drift Diagnostic using PC connected to Model 7950S service port.

Original Press Release:

Emerson Releases New Zero Drift Diagnostic for Use On Brooks Instrument Mass Flow Controllers

First-of-its-kind diagnostic tool alerts users to out-of-limits condition.

HATFIELD, PENN (June 23, 2006) - Emerson Process Management announces the release of a new diagnostic tool which detects and alerts users when the flow sensor on Brooks Instrument mass flow controllers (MFCs) experiences zero-drift of more than user specified limits. The Zero Drift Diagnostic is an advanced tool now available for the Brooks Model 7950S MFC. This unique feature monitors the flow signal during no-flow conditions, and then utilizes the Model 7950S alarms to notify the user when an out-of-limits condition has been detected. Zero drift can be accurately detected because the diagnostic in Brooks MFCs has the ability to monitor both positive and negative flow signals, giving users a higher level of confidence that the process has not shifted. Brooks’ products have long been revered for their resistance to zero drift over long periods of time. Now Emerson is the first supplier to prove the stability of its mass flow controllers with this new software diagnostic tool. A configuration tool application is provided that allows the user to customize the Zero Drift Diagnostic using a personal computer connected to the Model 7950S service port.

About Emerson Process Management

Emerson Process Management (, an Emerson business, is a leader in helping businesses automate their production, processing and distribution in the chemical, oil and gas, refining, pulp and paper, power, food and beverage, pharmaceutical and other industries. Brooks Instrument ( has supplied liquid and gas process control solutions to industries throughout the world. Brooks manufactures a complete line of flow measurement and control instrumentation including thermal mass, variable area, Coriolis, and positive displacement flowmeters, as well as a full line of supporting accessories. Brooks' technology and expertise play a key role in Emerson's combining of superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Emerson's brands include PlantWeb®, Brooks®, Fisher®, Micro Motion®, Rosemount®, Mobrey®, Bristol®, Daniel®, DeltaV™, Ovation® and AMS™ Suite.

About Emerson

Emerson (NYSE: EMR), based in St. Louis, is a global leader in bringing technology and engineering together to provide innovative solutions to customers through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2005 were $17.3 billion. For more information, visit


Christine Batycki

More from Mechanical Components and Assemblies

All Topics