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4283 JN Giessen
The Netherlands

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UR62 – Refractometric analyzer

The UR62 digital refractometer is a probe designed for simple installation in-line or in a tank or vessel. It continuously measures concentration and displays and outputs the result in Brix or nD or % concentration with basic accuracy. The UR62 will signal to the process when concentration is outside of specifications or has reached its target end point by means of analogue 4-20 mA output. The probe is easily set up and configured through a PC or portable computing device using its built in RS485 interface. It can also be connected to the optional RC-24 touch screen operator display unit. The analyzer does not have any drift in the time so that it does not need any adjustment vs the laboratory: after the initial configuration during start up, the operators in the plant do not have to touch the system anymore. Due to the optical technology, the equipment is virtually no maintenance: the robust construction with 316 stainless steel and IP67 protection, allows the installation in any aggressive environment using various Maselli mounting adapters.

  • Optical Technology
  • Basic accuracy
  • Interface detection
  • 100% in line installation
  • No need of adjustments vs the lab
  • No maintenance


Application: Measurement of liquid products in process lines in Food, Chemicals, Textiles, Petrochemical industries, etc. in continuous or batch plants
Measurement limits: 1.3170…1.4907 nD (0…80 Brix)
Accuracy: With reference to standard sucrose solutions.
0.6% of the range; maximum accuracy ±0.0004 nD (±0.20 Brix) with minimum range.
Measurement scales: “BRIX” or “USER”; the “BRIX” scale refers to the nD/Bx ICUMSA (1974) conversion tables; the “USER” scale can be configured at the time of the order
Resolution: 0.2 Brix or equivalent
Product temperature during measuring: 5…+90 °C (23…194 °F).
with automatic compensation for temperature measured by internal Pt1000 Temperature Probe, Class “A” (IEC-751). The maximum value depends on the type of installation (totally or partially immersed, conditioning system if installed, etc.) For product temperatures over 70°C (158°F) maximum immersion of the instrument must be 30 mm.
Version with integrated prism cleaning system, the maximum temperature is 50 °C (122 °F).
Maximum temperature during sanitization: Hot water at 95 °C (203 °F) for 30′ / steam (0.5 bar) at 110 °C (230 °F) for 30′
Response time to temperature variations: 2′ / 10 °C (18 °F)
Relative line pressure: max. 10 bar (145 psi) at 20 °C (68 °F)
max. 8 bar (116 psi) at 90 °C (194 °F)

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