Pr-23-Ac Mounting Specifics - Vaisala K-PATENTS PR-23 Series Instruction Manual

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9.3.5 PR-23-AC mounting specifics

The sanitary process refractometer PR-23-AC is connected to the process by a 2 1/2"
3A sanitary clamp. The recommended mounting is in a pipe bend, with a vertical flow
upwards before the sensor, and a horizontal pipe after. By this mounting is obtained
1. Self-cleaning of prism due to the flow directed against its surface.
2. Efficient drainage when the pipe is emptied.
For pipe diameters of 3" or above, a ferrule is welded directly to the pipe wall, Figure 9.4
(a ferrule, length 21.5 mm, is delivered with standard sensor delivery from Vaisala).
Figure 9.4 Mounting with sanitary ferrule
For smaller pipe diameters, flowcells are available from Vaisala, Figures 9.5, 9.6, 9.7
and 9.8, see also the tables in Section 9.3.2.
The flowcells are exchangeable with standard 90
Pipe diameter 3" (80 mm) or more
PR-23 instruction manual
∘
bend pieces.