🔍 Key Concepts

• Difference between strip chart recorders and circular chart recorders • How data is plotted: rectangular (Cartesian) coordinates vs circular layouts • Practical issues: storage and readability of long-term records

💭 Think About

• Think about what shape the paper is in a strip chart recorder and how that affects the way data is plotted over time. • Consider which type of chart (strip vs circular) would naturally lend itself to being filed or stored as a long time-history log. • Ask yourself: when you plot something like temperature or depth over time on graph paper, what kind of coordinate system do you usually use?

✅ Before You Answer

• Identify whether strip charts are usually long, straight strips or round disks. • Decide if time on a strip chart typically moves in a straight line or radiates from a center point. • Confirm whether the measured variable on a strip chart is normally plotted against time on one axis and value on the other.