Measuring range	Measuring range will we adopted to your needs!
Accuracy
PR21S	0.0002 nD
	0.1 %Brix
PR21H	0.00002 nD
	0.02 %Brix
Resolution
PR21S	0.0001 nD
	0.1 %Brix
PR21H	0.00001 nD
	0.01 %Brix
Process temp.
	< 60 °C
	< 160 °C (T-models)
Ambient temp.
	< 40 °C
	< 60 °C (T-models)
Temp. measurement	-10...200 °C
Temp. resolution	0.1 °C
Temp. compensation	ICUMSA
Illumination	LED (589 nm) for measuring prism
Interfaces	CAN-bus, ethernet
Power supply	24 V
Specials	Sapphire prism
	Protection class IP65
	Cooling (T-models)
	Ex protection optional
	Hastelloy-design optional

Process refractometer PR21 was developed for reliable process monitoring and control as well as for quality and quantity control in following industries:

• Pulp and paper industry
• Chemical and petrochemical industry
• Beverage industry
• Food industry
• Sugar and sweetener industry
• Textile industry
• Metal working industry
• Wastewater management

Process refractometer PR21

Process refractometer PR21 provides the benefits of refractometry for process applications. It is mounted directly into pipes, cauldrons or storage tanks. Thanks to standardized circuit points and because no bypass is required, installation is fast and simple. Cleaning and sterilization are performed directly in the process. Existing plants can be retrofitted very easy.
The PR21 is operated with 24 V DC and measuring data is transmitted to a programmable controler via ethernet or analog output unit. The accurate monitoring and control will result in an increased productivity. Likewise customers use the advantages of refractometry for their wastewater monitoring or safety-engineering systems. Therefore the PR21 process refractometer is available as ex-proof version and as hastelloy design for aggressive products.

Download refractometer brochure