There are a variety of ways in which safety switches are applied to industrial mixing equipment. However, it generally falls into three categories: limit switches, level switches, and temperature switches.
A limit switch prevents a high speed disperser or other post mounted mixer to start while in a lift position. Also it is frequently used to ensure that a tank or container is in place before the post mounted mixer is lowered into a batch. A level switch can restrain a pitched blade turbine mixer or other top entry mixer from starting when a batch level is too low. This is advantageous because most top mount tank mixers require a certain amount of fluid coverage to maintain stability while operating. A temperature switch can keep a disperser’s motor from reaching a temperature that could internally damage the motor or might create a hazard in an explosive environment.
The process environment is very important when determining the right switch to use. Mixers placed in pharmaceutical or food industries require frequent cleanings, so a stainless washdown grade limit switch may be ideal. Other environments or industries contain explosive atmospheres, and a particular code must be followed to build a unit that will operate safely, often necessitating the use of safety switches. Switch position may need to vary between batches to accommodate different size stainless steel or polyethylene containers.
With Mixer Direct’s ability to build and integrate an entire tank and mixer system, it is very easy for us to add the appropriate safety switches to keep your people and equipment protected. Contact us for more information by email at [email protected] or by telephone at 812-202-4047. We’d love to talk to you!