Pr-23-W Sensor Model Code; Figure 82 Pr-23-W Saundersâ Body Sensor; Table 49 Pr-23-W Sensor Model Code - Vaisala PR-23 Series User Manual

The sensor itself is built just like the PR‑23‑M sensor, see
PR‑23‑M/MS (page 146), and it is fixed to the Saundersâ body in the same way, with a
sapphire plate and a Kalrezâ O‑ring to keep all the metallic parts away from the process
liquid.
Saunders valve body flow cell
Graphite cast iron
PFA/ETFE
Figure 82 PR‑23‑W Saundersâ body sensor
10.9.1 PR‑23‑W sensor model code
Table 49 PR‑23‑W sensor model code
Model Description
PR‑23 Sensor
Sensor model
Aggressive medium Saundersâ body flow cell
‑W
Refractive index range limits
R.I. 1.320–1.530 n
‑73
R.I. 1.260–1.470 n
‑74
Sensor wetted parts material
Teflonâ PTFE (Plytetrafluoroethylene)
‑2TF
Sensor/diaphragm valve body connection
2 Adapter for 2 in/DN 50 valve body
Flow cell adapter
(AISI 316L)
PTFE wetted parts
sapphire prism
D
sapphire prism
D
Chapter 10 – Sensor specifications
Teflon body refractometer
PR-23-W Sensor
Prism
Sapphire plate
O-ring (Kalrez)
155