Vaisala K-PATENTS PR-23 Series, Instruction Manual, Page: 86 / 246

76 PR-23 instruction manual
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 in-
dex range 1.2600–1.4600, Figure 9.3.
1.30 1.25 1.35 1.40 1.45 1.50 1.55
M62/W62
M74/W74
N
D
Figure 9.3 PR-23-M/MS/W rangeability with
a sapphire prism (74) and with a standard prism (62)
9.3 Sanitary process refractometer PR-23-AC
Sanitary compact refractometer PR-23-AC is a 3A sanitary process refractometer for
measuring concentrations
in a pipe line . Easy to install in any pipe size directly or us-
ing a flowcell. The Sanitary compact refractometer is suitable for all food and bever-
age processing applications where on-line monitoring and control can help to improve
product quality and reduce costs.