Modular Concept

3 module slots for maximum functionality

The hardware modules are EMC shielded and completely encapsulated to ensure maximum availability. The modules are galvanically isolated from each other.

Knick’s product portfolio includes a broad range of more than thirty different modules with distinct functions. Up to 3 modules can be combined depending on the measuring task. Later retrofits and modifications are no problem.

A variety of communication modules provide functional flexibility, e.g. allow for adding extra outputs, connections to fieldbus systems etc.

If required, custom combinations of several process parameters can be measured with one device: pH/pH, Cond/Cond etc. or parallel pH and conductivity measurement, for example.

Combined evaluation – i. e. the calculation of several process parameters e.g. for differential measurement or quasi-redundant measuring systems.

Plug & play – You can plug the modules into each other in any order. They are recognized automatically. For quick and easy retrofitting and modification; hot swap technology.

Modular Software Options
Numerous add-on functions allow the Protos to be optimally adapted to suit the respective application. Straightforward handling thanks to the memory card slot and the ProgaLog 3000 configuration tool.




Manual - Modular Concept

Manual (en)

2027 |  Protos 3400(X) Process Analysis System
System Components FRONT and BASE
Software version A.x
PDF (file size: 7.68 MB)
Manual - Modular Concept

Manual (en)

14151 |  PROTOS 3400(X) Software Versions
PDF (file size: 1.9 MB)

Control Drawings

Control Drawing - Modular Concept

Control Drawing (en)

16771 |  Protos 3400X, Protos II 4400X & Modules
Zeichnungsnummer 201.003-170
PDF (file size: 0.46 MB)

Certificates / Approvals

EU-Type-Examination Certificate - Modular Concept

EU-Type-Examination Certificate (en)

14327 |  Protos 3400X, Protos II 4400X & Modules
DEKRA Document No. KEMA 03ATEX2530 | 2022-07-28 | Issue No. 11
PDF (file size: 8.27 MB)
IECEx Certificate of Conformity - Modular Concept

IECEx Certificate of Conformity (en)

4638 |  3400X, Protos II 4400X & Modules
Document No. IECEx DEK 11.0054 | 2022-07-28
Issue No. 5
PDF (file size: 0.87 MB)
Certificate of Compliance (FM) - Modular Concept

Certificate of Compliance (FM) (en)

16756 |  No. FM19US0234X (USA)
Protos 3400X, Protos II 4400X & Module
26 January 2023
PDF (file size: 0.69 MB)