Article | June 26, 2017

Making Sense Of Sensor Numbers And Placement

Source: Rotronic Instrument Corp.

By Bruce McDuffee

Making Sense Of Sensor Numbers And Placement

How many sensors do I need for a mapping study?

There are many factors that are in play for the number of sensors required. It would be nice if there was a simple formula such as one sensor per square foot or per square meter. A formula sometimes can be used as a general rule of thumb, but even if the space to be mapped is homogenous and symmetrical, there are still other considerations to think about. Is there a heat or cold source for the system to be mapped? Is there a fan that can affect air flow? Is there something blocking air flow such as a shelf or product? Is there a theoretical gradient of some type, like an upper corner (hot) or lower drain (cold)? All of these factors can play a role in the number of sensors required.