Model codes - PR-21-S

PR-21 Series User Guide
Document code
IM-EN-PR21S
Revision
C
Language
English
Product
PR-21-S
Document type
User guide
Table 1. PR‑21‑S models

Model

Description
PR‑21‑S

Sensor

Refractive index range limits
50 Low range, R.I. 1.320 … 1.460 (max span = 0.11)
57 High range, R.I. 1.380 … 1.530 (max span = 0.1)

Process connection
‑L Sandvik L‑clamp, 88 mm
‑D DIN‑flange 2656, PN25/40 DN80

‑A

 ANSI‑flange 150 lbs, 3 in
‑M ANSI‑flange 150 lbs, 4 in

‑J

 JIS‑flange, 10K 80 A

Sensor wetted parts material

XS

 SAF 2205 / AISI 316 L

Electrical classification

‑GP

General purpose

‑FM

FM certified Class I, Div.2, Groups A, B, C, D T6 (Tamb −20 … +45 °C)

‑IA

ATEX and IECEx certified Ex II 1G, Ex ia IIC T4 Ga (up to zone 0) (Tamb −20 … +65 °C)

1
Sensor length
‑LPL Long probe, insertion length 302 mm (11.89 in)
‑LPS Long probe, insertion length 150 mm (5.9 in)

Prism wash
‑HPY Integral nozzle mounting connection
‑HPN Integral nozzle for water
‑HPS Integral nozzle for steam
‑YPY Without integral nozzle mounting connection
Table 2. Transmitter models for 100 … 240 V AC

Model

Description
DTR Indicating transmitter (connectivity for two sensors)
STR Indicating transmitter (connectivity for one ‑IA sensor)
Cable connection
‑U ½ in NPT‑type conduit hubs
‑M M20x1.5 metric cable glands

Electrical classification

‑GP

General purpose

‑CS

CSA certified for use in general purpose (ordinary) locations

Applicable to CSA and ANSI/UL standards 2
Power supply
‑AC Power supply 100 … 240 V AC 50/60 Hz
Table 3. Transmitter models for 24 V DC

Model

Description
DTR Indicating transmitter (connectivity for two sensors)
STR Indicating transmitter (connectivity for one ‑IA/‑IF sensor)
Cable connection
‑U ½ in NPT‑type conduit hubs
‑M M20x1.5 metric cable glands

Electrical classification

‑GP

General purpose
Power supply
‑DC Power supply 24 V DC
Table 4. Cables

Model

Description
PR‑8230

Interconnecting cable between transmitter and sensor (standard black cable)

(for STR transmitter: Interconnecting cable between transmitter and isolator)
Cable length
‑010 10 m (33 ft)
‑_ _ _

Specify cable length in meters with 10 m (33 ft) increments.

Maximum length is 200 m (660 ft)

PR‑8021

PR‑8021‑FM

Cable connector for PR‑21‑S for ‑GP and ‑IA sensors 3

Cable connector for PR‑21‑S for FM sensors 3
1 Available with STR‑Indicating Transmitter and IS isolator only
2 Available only with Cable connection code ‑U, ½ in NPT‑type conduit hubs only
3 New cable connector needed for PR‑21‑S new sensor or PR‑21 upgrade