Designing an access control system often starts with the reader technology. But in some environments, that is the least of your concerns. Harsh environments can mean anything from extreme temperature (hot or cold), to dusty, dirty, gaseous, chemical and beyond. And while cards and readers may work just fine in those conditions, that is anything but a given. There are far more things to consider in the design of systems for these special circumstances.
“Harsh environments can involve temperature, humidity, aggressive gasses or particulates,” says Brad Aikin, product manager for commercial electronic locks, Ingersoll Rand, Carmel, Ind. “Aggressive or acidic gasses such as those found in paint booths at automotive facilities can attack mechanical components and eat away at finishes and circuit boards. Tire manufacturing involves large particulates of rubber dust. Even a marshmallow plant has powdered marshmallow particulates all over the place.”