Knick – Portavo 904 X pH

Knick – Portavo 904 X pH

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Knick – Portavo 904 X pH


The world’s only portable device for pH measurement with ATEX approval for measurements up to zone 0/1. Ideal for applications in the process industry. For the first time, Portavo enables direct on-site testing of process measuring points.
It is compatible with almost all analog and Memosens process pH sensors.


  • A sensor quiver protects the sensor from damage and drying out
  • The high-performance polymer housing ensures low water absorption and high impact resistance
  • Over 1,000 hours of measurement with a single set of batteries (4x AA)
  • Data logger with 5,000 values
  • Micro USB port and Paraly SW 112 software
  • Memosens sensors and analog pH sensors can be used on one device (e.g flat-membrane sensors)
  • The mineral glass display is perfectly readable even after years
  • Application in hazardous locations for measurements up to Zone 0/1 (cCSAus planned)


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