What specific requirement did industries like brewing and pharmaceuticals place on temperature monitoring that manual logging could not reliably meet?

Answer

The necessity of holding a product at a specific temperature for an exact duration, requiring recording of the thermal history

Industries dealing with sensitive products, such as pharmaceuticals or food preservation, depend on precise thermal history. For instance, a requirement might stipulate holding a batch at $60^ ext{ }^ ext{o} ext{C}$ for exactly 4 hours. Manual logging, which relies on human observers checking gauges intermittently (perhaps hourly), is inherently flawed due to potential human error, bias, or missed readings, especially overnight. Dedicated recording mechanisms were needed to ensure that the *entire* thermal profile was documented continuously, guaranteeing evidence of compliance with strict time-temperature parameters.

What specific requirement did industries like brewing and pharmaceuticals place on temperature monitoring that manual logging could not reliably meet?

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