Flexible, 4-wire device for the following process variables: pH, ORP, conductivity and oxygen.
Modular premium transmitter for all requirements. Versatile. Expandable. Ensuring process safety.

Protos II 4400 (X) is a flexible, 4-wire device for the following process variables: pH, ORP, conductivity and oxygen.
For monitoring and controlling processes even in the most complex applications — also in hazardous areas.

Facts and Features
Stainless steel design with hygienically optimized surface. Ideal for pharmaceutical or food production
Stainless steel design with corrosion-proof powder coating for harsh industrial areas
Universal broad-range power supply 24 … 230 V AC/DC
Rugged; can also be used outdoors with IP 65 protection and UV resistance
Panel, wall or post/pipe mounting
High-contrast graphic LC display
USB memory card concept for data recording, firmware updates, and Audit Trail
Freely combinable measuring, control, and communication modules

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Flexible, 4-wire device for the following process variables: pH, ORP, conductivity and oxygen.
Modular premium transmitter for all requirements. Versatile. Expandable. Ensuring process safety.
Protos II 4400 (X) is a flexible, 4-wire device for the following process variables: pH, ORP, conductivity and oxygen.
For monitoring and controlling processes even in the most complex applications — also in hazardous areas.
Facts and Features
  • Stainless steel design with hygienically optimized surface. Ideal for pharmaceutical or food production
  • Stainless steel design with corrosion-proof powder coating for harsh industrial areas
  • Universal broad-range power supply 24 … 230 V AC/DC
  • Rugged; can also be used outdoors with IP 65 protection and UV resistance
  • Panel, wall or post/pipe mounting
  • High-contrast graphic LC display
  • USB memory card concept for data recording, firmware updates, and Audit Trail
  • Freely combinable measuring, control, and communication modules