M4 Knick Portavo portable meters are handheld instruments for field measurement, sensor calibration, verification, and troubleshooting. The multiparameter models work with Memosens sensors for pH, ORP, conductivity, and dissolved oxygen, with selected configurations also supporting analog sensors. They provide a practical way to check sensor performance directly at the measurement point in industrial plants, laboratories, and water treatment operations.
The Portavo range includes models for routine multiparameter work, data storage and USB connectivity, as well as the Portavo 904 X for use in hazardous areas. Portable measurement helps technicians compare process and reference readings, perform offline calibration, and identify sensor issues at the point of use. Rugged construction supports routine maintenance and fieldwork where access, environment, or area classification can make sensor checks more difficult.
Key applications
- Field measurement and sensor verification
- pH and ORP calibration
- Conductivity and dissolved oxygen measurement
- Water and wastewater treatment
- Hazardous area measurement
