Goodwin Steel Castings

Goodwin Steel turn to EMS for a technical solution to a challenging particulate monitoring requirement, to accurately record particulate emissions data at a single monitoring point with variable flow speeds.

Goodwin Steel Castings


Goodwin Steel Castings Ltd is a supplier of speciality metal castings based in Stoke-on-Trent, Staffordshire. Goodwin Steel Castings Ltd specialises in machined metal castings, fabrication, and assembly, and has been supplying these products for nearly 130 years.

Origins and Requirement

Goodwin Steel Castings Ltd approached EMS with a requirement for local exhaust ventilation (LEV) monitoring for three independent extraction booths. Dust from each booth is extracted into a single shared channel, which then feeds into a bag house for filtration. Extraction is performed by a single, variable speed drive controlled fan positioned downstream of the booths. 

The design of the extraction system allowed for only a single monitoring point after the extraction booths and before the bag house.


Using a single particulate monitor to record the emissions from each extraction booth created a challenge for the engineering team at EMS. Monitoring one point subject to three different levels of particulate flow required a monitoring solution capable of actively switching between three independent calibrations.

EMS specified an Auburn Systems 3400 unified particulate monitor to monitor the emissions between the LEV booths and the bag house.

To solve the challenge of variable particulate flow, the 3400 series particulate monitor was integrated into EMS’ frontline environmental data acquisition system (eDAS®). For this application eDAS® Site was specified as this includes an industrial specification touch screen display. This flexible system gave the client the ability to centralise all of their site environmental performance data. Inputs from multiple process monitoring instruments can be taken and displayed via a series of customisable reports, graphs and charts.

Although the primary function of eDAS® is to collate environmental performance data, it can also be used for a number of system control tasks. In this case the eDAS® was pre-loaded with three separate calibration factors and configured to apply the correct calibration for the number of booths in use.  


The flexibility of eDAS® allowed the EMS team to solve a complex monitoring challenge.

Thanks to this new system, monitoring of the LEV extraction booths at Goodwin Steel Castings Ltd is now always correctly calibrated. The new eDAS is also designed to adopt new monitoring equipment in the future and is fully extensible to include a cloud-based system, eDAS® Web.

For more information on environmental data acquisition please click here or contact the EMS team on 0114 272 2270.

We had a requirement to have continuous quantitative emissions monitoring on three extraction booths venting via one stack point, where the number of booths running could change at any one time. We further needed to log data including warning and emission limit alarms. The eDAS system automatically copes with the multiple calibration factors required and gives us clear emissions information
Ian Martin, Environmental Manager at Goodwin Steel Castings Ltd.

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