Vaisala PR-23 Series - Figure 78 PR-23-M;MS Sensor; PR-23-M Sensor Model Code; Table 39 PR-23-M Sensor Model Code

1
2
3
Figure 78 PR‑23‑M/MS sensor
The previous figure shows the structure of the sensor. The flow cell (3) and the sapphire
plate (1) are fixed to the stainless steel sensor with four screws. The flow cell (3) is sealed by
a Kalrez O‑ring (2). The flow cell prevents any leakage reaching the metal parts, because
there is a circular leakage chamber behind the O‑ring (2). The chamber connects to a
checkport, which has a 1/8 in female thread connection.
10.8.1
PR‑23‑M sensor model code
Table 39 PR‑23‑M sensor model code
Model Description
PR‑23 Sensor
Sensor model
‑M Aggressive medium adapter
Refractive index range limits
73 R.I. 1.320–1.530 n
D
sapphire prism
74 R.I. 1.260–1.470 n
D
sapphire prism
Chapter 10 – Sensor specifications
147