Metrology Glossary: Draft Shield (Weight and Scale)

What Is A Draft Shied?

A draft shield is a contraption used to safeguard the precision of a balance or scale by shielding it from the disruptions caused by air movements. Typically constructed from transparent materials like acrylic, it includes one or multiple apertures through which the weighing pan or platform is accessible. The draft shield establishes a barrier between the area where weighing occurs and the surrounding atmosphere, thereby ensuring the scale’s ability to furnish precise measurements. Draft shields are especially crucial in analytical weighing, where even minor air disturbances can lead to incorrect outcomes.

Why Are Draft Shields Used For?

Draft shields are used for safeguarding precision balances and scales in analytical weighing. They shield against air currents and dust, crucial for maintaining measurement accuracy. These shields create a controlled weighing environment, ensuring constant temperature and humidity, further enhancing precision. Additionally, draft shields act as barriers, preventing sample contamination and preserving sample integrity. They also improve visibility for operators by enhancing the clarity of the weighing pan.