Chart recorder

Okay kiddo, so a chart recorder is a machine that draws pictures of things over time. Think of it like drawing on a piece of paper, but instead of a person drawing, the machine does it automatically.

Let's pretend we want to draw a picture of the temperature in a room. The chart recorder will have a special sensor that can measure the temperature and tell the machine what to draw. It will start at the left side of the paper and draw a line that goes up and down depending on if the temperature is getting hotter or colder.

The machine doesn't just draw one line though, it keeps drawing lines over time so we can see how the temperature changes. It might draw a new line every minute or hour, depending on how we set it up. When we're done, we'll have a picture that shows us how the temperature changed over time.

Chart recorders can be used for lots of different things like measuring the flow of water in a river, tracking the speed of a car, or even monitoring the heartbeat of a person in a hospital. They're really helpful for scientists and engineers who want to study how things change over time.