Sensor rangeability - PR-23 - PR-23-AC - PR-23-AP - PR-23-GC - PR-23-GP - PR-23-M - PR-23-RP - PR-23-SD - PR-23-W

The standard refractive index range of a PR‑23 sensor is 1.320 … 1.530 (corresponds to 0 … 100 Brix), shown in the following figure.

The refractometer models PR‑23‑M/MS and PR‑23‑W for aggressive solutions and ultra-pure fine chemicals can be equipped with a sapphire prism with a refractive index range 1.2600 … 1.4700, shown in the following figure.

The refractometer model PR-23-SD for pulp and paper industry can be equipped with a sapphire prism with a refractive index (nD) range 1.3600 … 1.5700, shown in the following figure.