Vaisala PR-23 Series User Manual

10.8.7 PR‑23‑M/MS mounting specifica
tions
Teflonâ body r
efractometer PR‑23‑M is connected to the process by a G ½ in female or a
½ in NPT process connection, see the figure below. PR‑23‑MS is connected to the process by
a ¼ … 1 in G/NPT process connection.
Always install PR‑23‑M/MS with sensor support t
o prevent the sensor
weight from pulling at the non-metallic piping. See the figure below for support
placement.
CAUTION!
4.72
120.0
2.97
75.5
1.24
31.5
7.11
180.7
1 2 3
4
4
G1/2" or
NPT 1/2"
G1/2" or
NPT 1/2"
Suppor sensor here
Note!
Cable downwards
Grounding
screw
Note! Keep sensor
axle horizontal
mm
[in]
Figure 81 PR‑23‑
M with ½ in G/NPT process connection
10.9 Saunders body refractometer
PR
‑23‑W
Saundersâ
body refractometer PR‑23‑W is a heavy-duty instrument designed for
chemically aggressive liquids and ultra-pure fine chemicals in large-scale production and in
large pipelines. The materials and design of the sensor are similar to the Teflonâ body
refractometer PR‑23‑M, but the Saundersâ body makes it possible to fit this refractometer
into 50 mm, 80 mm or 100 mm (2 in, 3 in or 4 in) pipelines.
Saunders
â body material is graphite cast iron lined with 3 mm PFA (fluorinated ethylene
propylene) or ETFE (ethylene tetrafluoroethylene) fluoroplastic. The cast iron provides a
solid mechanical base and the PFA/ETFE lining ensures the chemical resistance.
PR-23 Series User Guide
IM-EN-PR23-E
154

Vaisala PR-23 Series Specifications

General

Brand	Vaisala
Model	PR-23 Series
Category	Measuring Instruments
Language	English