Process Refractometers (dry solids measurement)

Patented 6th generation process refractometer

Specialized KxS retractable process refractometer DCM-20 PASVE® system configurations for dry solids content measurement in:

  • Black liquor in evaporators and recovery boilers
  • Green liquor in causticizing
  • Brown stock washing filtrates and suspensions
  • All DCM-20 PASVE® sensors are interchangeable with full R.I. range of 1.32…1.56 covering all pulp mill dry solids content measurement applications up to 85 %

KxS retractable refractometer DCM-20 PASVE® system features patented safety design to protect both your process and your personnel. At the heart of the system is the PASVE® isolation valve, a field-proven solution trusted by the pulp industry with over 75,000 installations worldwide

  • Maximum operator safety 
  • Simple, risk-free sensor insertion and removal without process shutdown

The most maintenance-free pulp industry refractometer

KxS DCM-20 PASVE® system is designed to operate longer and more reliably—with virtually no need for routine maintenance. This is a result of expertise, smart engineering, and advanced optical performance tailored for the toughest pulp mill conditions.

Optical stability like no other

  • Durable, industry-proven construction withstands high temperatures, scaling, pressure fluctuations, and chemical exposure.
  • Most modern CMOS-based optics is accurate, and stable without sensitivity to light scatter.
  • Advanced 6th generation image detection identifies only real fouling, triggering wash cycles only when truly needed. This reduces unnecessary washing that can cause prism erosion.  

Installation flexibility and operation safety​

  • The KxS DCM-20 PASVE® is the smallest retractable process refractometer system.
  • The ultra-compact, lightweight design requires only 400 mm x 400 mm x 300 mm of free space around it for installation and safe operation.
  • Ideal for tight and challenging installation environments where space is limited.

Nordic Ventures Group offers dedicated expertise throughout the entire lifecycle of your DCM-20 PASVE® system—from configuration and installation to optimization and long-term support.