Vaisala PR-23 Series - PR-23-RP Sensor Model Code; Table 36 PR-23-RP Sensor Model Code

A factory acceptance test (FAT), and customized drawings stating client specific information
are also available on request.
10.7.1 PR‑23‑RP sensor model code
Table 36 PR‑23‑RP sensor model code
Model Description
PR‑23 Sensor
Sensor model
‑R Refinery
Sensor type
P Probe type, wetted materials single piece no weldings
Refractive index range limits
‑73 R.I. 1.320–1.530 n
D
(0 … 100 Brix) sapphire prism
Process connection
‑M20 ANSI-flange 300 lbs, 2 in, insertion length 130 mm
‑J20 JIS-flange 10k 50A, insertion length 130 mm
Sensor wetted parts material
‑SS AISI 316 L
‑HA Alloy 20
‑HC Alloy C276
Electrical classification
‑AX ATEX and IECEx certified Ex II 3G, Ex nA IIC T4 Gc (up to zone 2) (T
amb
−20 … +65 °C)
‑IA ATEX and IECEx certified Ex II 1G, Ex ia IIC T4 Ga (up to zone 0) (T
amb
−20 … +65 °C)
1)
‑CX NEPSI Certified for use in Ex nA IIC T4 Gc
‑CI NEPSI Certified for use in Ex ia IIC T4 Ga
Sensor housing
‑SC Stainless steel AISI 316
1) Available with STR‑ indicating transmitter and IS isolator only.
Example: Sensor: PR‑23‑RP‑73‑M20‑SS‑AX‑SC
Chapter 10 – Sensor specifications
139