Vaisala PR-23 Series - Mounting Specifics for EHEDG-Certified PR-23-AC Configuration; 3-A Sanitary Standard Compliance; Figure 57 Flow Cell AFC-HSS- with Wash Nozzle Connection (-NC) H20 for Pipe Diameter 2 in (50 MM) and H25 for Pipe

A
A
A
B
C
D
D
45°
B
B
SECTION A-A
SCALE 1 : 2
1
3
2
1
2
3
5
4
45°
SECTION B-B
SCALE 1 : 5
10
6
11
Flow cell type A
B C D
AFC-HSS-H20-SI-NC 48.6
48.6 51.6 89.0
AFC-HSS-H20-RI-NC
35.6
48.6 51.6 89.0
AFC-HSS-H25-SI-NC
60.3
60.3 64.1 108.0
Figure 57 Flow cell AFC
‑HSS‑ with wash nozzle connection (‑NC) H20 for pipe diameter 2 in
(50 mm) and H25 for pipe diameter 2.5 in (65 mm)
10.3.6 Mounting specifics for EHEDG‑certified PR‑23‑AC
configuration
Vaisala oers
certain configurations which have been certified to fulfill the sanitary
requirements published by EHEDG (European Hygienic Engineering & Design Group)
organization. During this certification the hygienic characteristics of both the refractometer
and the process connection were evaluated against the applicable requirements.
To ensure EHEDG compliant installation, follow the mounting specifics
provided on the
mounting drawing supplied by Vaisala with each refractometer sensor ordered with the ‑EH
option.
10.3.7 3‑A Sanitary Standard compliance
Ensure that the refractometer is not a source of contamination to the product due to
damaged or worn product contact surfaces. Misuse (for example, excessive prism wash time
or wash pressure) or mishandling may result in metal scratches or roughened surfaces. Such
surfaces may not stay clean in processing.
PR-23 Series User Guide
IM-EN-PR23-E
112