Fujifilm Prescale Measurement Film

Fujifilm Prescale can measure pressure and visualise pressure range. Red patches appear on Prescale when pressure is applied. Prescale functions as a sensor and you can see at a glance the whole pressure distribution on it.

About Prescale

Prescale allows you to easily measure pressure distribution and range. Created using Fujifilm’s advanced thin film coating technologies, the pressure inspection sensor on the entirety of the film allows you to confirm pressure distribution of the entire surface at a glance. The color appears red where pressure is applied, and the color density varies according to the amount of pressure. To cover a wide pressure range (0.006 to 300 MPa), we supply nine types of Prescale.

Structure and Principle

Structure

There are two types of Prescale: the two-sheet type and the mono-sheet type. The two-sheet type is composed of two films of which are respectively coated with color-forming material and color-developing material. This type is used by placing the sides coated with the chemical agents over each other. The mono-sheet type is a film with a single base film with a coating of color-forming material and developer.

How Prescale Works

The microcapsules in the color-forming layer are broken by pressure, and the colorless dye is absorbed into the developer, causing a chemical reaction to produce a red color. The microcapsules containing the color-forming material are adjusted to varying sizes and strengths, and is coated uniformly, producing a color density that corresponds to the amount of pressure.

Prescale Pressure Calculator (MPa)

1 MPa = 1 N/mm² ≒ 10.2 kgf/cm²

To obtain the pressure value, you need the mass (kg) or newtons (N), as well as the surface area (mm² or cm²).
For instance, if 100 kg is applied on a 100 mm² (1 cm²) surface, the calculation is 100 kgf/cm².
Divide this value by 10.2. The formula is 100 kgf/cm² / 10.2 = 9.8 MPa.