A.KRÜSS Optronic Process Refractometer PR21
The A.KRÜSS Optronic Process Refractometer PR21 is a high-precision analytical instrument specifically designed for continuous process monitoring and control in industry. It offers exceptional measurement accuracy and reliability, making it a preferred choice for professionals in various industries. Compared to similar products such as the A.KRÜSS Optronic Digital Handheld Refractometer, the PR21 offers higher precision and a wider range of applications.
Technical specifications and advantages
The PR21 is available in different models, including PR21S, PR21S-T, PR21H and PR21H-T. Here are the key technical specifications:
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Measurement accuracy:
- PR21S/PR21S-T: ±0.0002 nD, ±0.2 %Brix
- PR21H/PR21H-T: ±0.00002 nD, ±0.02 %Brix
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Resolution:
- PR21S/PR21S-T: 0.0001 nD, 0.1 %Brix
- PR21H/PR21H-T: 0.00001 nD, 0.01 %Brix
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Product temperature:
- PR21S/PR21H: < 60 °C
- PR21S-T/PR21H-T: < 160 °C
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Ambient temperature:
- PR21S/PR21H: < 40 °C
- PR21S-T/PR21H-T: < 60 °C
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Units of measurement: Refractive index [nD], sugar content [%Brix], user-defined [%]
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Measuring interval: 3-60 s
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Temperature sensor: PT100
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Temperature measurement: -10-200 °C
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Temperature resolution: 0.1 °C
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Temperature measurement accuracy: ± 0.2 °C
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Temperature compensation: ICUMSA, freely selectable
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Process temperature: -5-160 °C
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Prism: Sapphire
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Illumination: LED 590 nm (service life approx. >100,000 h)
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Housing: Stainless steel, cast aluminum, powder-coated
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Interfaces: Analog 0/4-20 mA, Ethernet, PROFIBUS (optional)
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Protection class: IP 65
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Operating voltage: 24 V
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Dimensions: 18.0 x 19.0 x 18.0 cm
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Weight: 3.5 kg
Certifications and standards
The PR21 complies with protection class IP 65, which means that it is protected against dust and water. This is particularly important for use in harsh industrial environments. Temperature compensation in accordance with ICUMSA standards ensures precise measurements even in changing ambient temperatures.
Application examples
The A.KRÜSS Optronic Process Refractometer PR21 is used in a wide range of industries, including
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Food and beverage industry: monitoring the sugar content in beverages and juices.
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Chemical industry: monitoring the concentration of chemicals in solutions.
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Pharmaceutical industry: monitoring the purity and concentration of pharmaceutical solutions.
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Petrochemical industry: Determination of the refractive index of oils and lubricants.
FAQs
How accurate is the PR21 compared to other refractometers?
The PR21 offers exceptional measurement accuracy of up to ±0.00002 nD and ±0.02 %Brix, making it one of the most accurate refractometers on the market. Similar products such as the A.KRÜSS Optronic Analog Abbe Refractometer AR4 also offer high accuracy, but not to this extent.
Can the PR21 be used in extreme temperatures?
Yes, the PR21 can be operated in a wide temperature range from -5 to 160 °C, making it ideal for use in various industrial environments.
What interfaces does the PR21 offer?
The PR21 is equipped with several interfaces, including analog 0/4-20 mA, Ethernet and optional PROFIBUS, which enables seamless integration into existing process control systems.
Conclusion
The A.KRÜSS Optronic Process Refractometer PR21 is an indispensable tool for professionals who require precise and reliable measurements in industrial processes. With its high measuring accuracy, robust design and versatile application options, it sets new standards in process monitoring. Similar products to the A.KRÜSS Optronic process refractometer also offer excellent performance, but with different specifications and areas of application.
