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Emerson Process Management Smart Wireless technology is continuously monitoring resin batch temperatures at AOC’s facility in Perris, California, to enable better process control.

The technology is providing a 10 per cent improved throughput and increased employee safety.

The secure, self-organising network ensures the proper mixing of AOC intermediate resin products with micro-additives at target temperatures to achieve customer-specific formulations and quality.

AOC is a supplier of resins, gel coats, colorants and additives for composites and cast polymers.

Smart Wireless eliminated clipboard rounds, which were an inefficient use of operators’ time, subjected personnel to a safety risk and lengthened the time to market.

Tou Moua, AOC product engineer, said: ‘If staff found the temperature was not at target, it required additional time and resources to heat or cool the mix tank to the target temperature before adding temperature-dependent micro-additives or loading the product.

‘By replacing manual sampling with online measurements, we were able to decrease cycle time by up to 10 per cent.

‘We also improved operator safety and freed up their time to improve on other areas of the plant,’ added Moua.

Eight Rosemount wireless temperature transmitters continuously check batch temperatures, sending the real-time data to a Smart Wireless Gateway integrated with the plant DeltaV digital automation system.

The company uses Emerson AMS Suite predictive maintenance software to manage the devices, which enables technicians to configure them, run diagnostic checks and monitor alarms and alerts.

AOC chose Smart Wireless technology because it required minimal wiring; the wireless transmitters can be moved from one location to another and the technology was said to be more cost-effective than wired technology.

Setup and commissioning of the network took 12 hours.

Emerson Process Management – Wireless

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