A.KRÜSS Optronic Process refractometer requirement profile
PDF · Manufacturer document
A process refractometer participates directly in process measurement, so a concentration range alone is insufficient. The A.KRÜSS Optronic requirements form separates inline/bypass installation, temperature, pressure, medium and connections, providing a basis for an engineering checklist.[1]
Confirm the point and installation arrangement
Inline and bypass measurement have different connection and operating requirements. The form specifies different pressure conditions for PR21S and PRB21S; shared refractive-index measurement does not make them interchangeable at the same connection and pressure.
| Form example | Listed condition | Meaning |
|---|---|---|
| PR21S inline | Gauge pressure below 9 bar | Check the actual pressure for that design |
| PRB21S bypass | Gauge pressure below 2 bar | Do not apply the inline limit to bypass |
| Continuous operating temperature | 10–60 °C | Different from cleaning temperature |
| CIP condition | Listed up to 120 °C | Not permission for continuous measurement at 120 °C |
These conditions are from the existing Version 1.7 form for the specified arrangements, not universal process-refractometer specifications.[1]
Overall coverage versus an individual window
PR21S information covers an overall nD span of 1.32–1.52, but an individual window is 0.1000 wide, for example 1.32–1.42 or 1.37–1.47. Quoting only the total span implies every configuration covers it. Provide the expected sample interval and confirm the chosen window.[1]
PRB21S has its own range. Do not combine the two as shared series specifications. For concentration output, establish the sample system and conversion basis rather than applying one sugar relation to every medium.
Check media, materials and cleaning separately
Provide composition, state, expected temperature/pressure and cleaning media/conditions, then check the listed wetted materials. One compatible material does not establish suitability of every seal and connection.
The form provides no explosion protection. Do not add that capability or infer hazardous-duty suitability from the product name; confirm equipment and site requirements separately.[1]
Apply the checklist to the project
Record the measurement point, connections, continuous conditions, short-term cleaning conditions, window, outputs and maintenance. Recheck configuration after conditions change rather than updating one range value.
This checklist reduces selection omissions; it is not installation instructions or a guarantee of on-site measurement performance.
References
- [1] A.KRÜSS Optronic Process refractometer requirement profile, PDF page(s) 1 (file page order). View reference resource