Skip to main content Skip to search Skip to main navigation

Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic Surface | 4-Wire | 24 V AC/DC Power Supply

Description

Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic Surface | 4-Wire | 24 V AC/DC Power Supply

The Protos II 4400 (X) premium transmitter 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 - even in hazardous areas

  • Stainless steel design with hygien-ically optimized surface. Ideal for pharmaceutical or food production
  • Rugged; can also be used outdoors with IP 65 protection and UV resistance
  • Panel, wall or post/pipe mounting
  • Multiparameter and multichannel function with up to 6 Memosens sensors
  • High-contrast graphic LC display
  • USB memory card concept for data recording, firmware updates, and Audit Trail
  • Freely combinable measuring, control, and communication modules
  • 4-wire system with active current outputs (standard in BASE module)
  • High-resolution graphic display
  • Parameter set changeover for greater process control flexibility
  • KI recorder for signaling faulty processes
  • Softkeys for flexible, intuitive operation
  • Flexible combination of sensors and process variables

Retrofits Possible, Future-Proof
Protos II 4400 (X) features a unique modular design and freely accessible wiring with a clear layout. The option for easy retrofitting and upgrading ensure planning security today and in the future. Different Ethernet and Fieldbus modules enable digital communication and seamless integration into automation systems.

Wide Sensor Selection
Protos II 4400 (X) is the only process analysis system that can be  flexibly combined with Memosens and other digital or analog sensors —  in multi-channel mode as well. 
With Memosens technology, up to 6 measuring channels can be imple-mented in parallel.

Status Messages acc. to NE 107
All status messages for maintenance requests, failure, out of specification, and function check (HOLD) are output as specified in NE 107.

Reliable and Safe Thanks to  Memosens Technology
Digital sensors with inductive signal transmission — contactless sensor couplings ensure the reliable analysis of liquid in all environments. Sensors that are pre-calibrated in the laboratory deliver maximum availability and reduced maintenance efforts at the point of measurement. Even for non-specialist employees, sensors can be replaced on site in just a matter of seconds.

 

We look forward to hearing from you!
Contact Us

Technical details

2- or 4-wire: 4-wire
Communication (Output, Digital): Foundation Fieldbus, PROFIBUS, PROFINET
Display: High-contrast graphic LC display
Measurement Parameter: pH, Multiparameter, ORP , Oxygen, Conductivity, Conductivity (inductive)
Memory Card: Data Card, FW Update Card, Firmware Repair Card
Explosion protection: Yes, hazardous area Zone 1
Enclosure: Stainless steel, polished

Downloads

Manuals

[14601] User Manual
Protos II 4400(X) Process Analysis System
FRONT and BASE Modules
Version 02
[17320] User Manual
Unical 9000/Protos II 4400
Version 02
[16957] User Manual
ProgaLog 4000
PC configuration tool for transmitters
[16352] ChangeLog Firmware History
Protos II 4400 | ChangeLog Firmware History
Document version 1.0
[14635] User Manual
Protos II 4400(X) - TAN Options
Device-specific add-on functions for expanding functionality
[18024] ChangeLog
ProgaLog 4000
2024-11-29

Brochures

[14505] Brochure
Protos II 4400 (X) - Ready for the Future

Data Sheets

[14500] Data sheet
Protos II 4400 (X)
Product Description | Specifications | Product Range

Certificates

[18017] Certitficate of Conformity (China - Ex NEPSI)
Protos 3400X, Protos II 4400X, Module und MSU 4400X-180 Module
Cert No. GYJ20.1054 | 2025-08-19
[14326] EU Type-Examination Certificate
No. KEMA 03ATEX2530 | 2022-07-28 | Issue No. 11
Protos 3400X, Protos II 4400X & Modules
[16762] Certificate of Conformity (FM)
No. FM19CA0127X (Canada)
Protos 3400X, Protos II 4400X & Module
26 January 2023
[12581] Certitficate of Conformity (China - Ex NEPSI)
Protos 3400X, Protos II 4400X & Module
Cert No. GYJ20.1054 | 2025-08-19
[14670] EU Declaration of Conformity (DE, EN, FR)
No. EU210301B | 2021-03-01
Protos Front 4400XC-015, 4400XS-015
[16755] Certificate of Conformity (FM)
No. FM19US0234X (USA)
Protos 3400X, Protos II 4400X & Module
26 January 2023
[18020] IECEx Certificate of Conformity
Types Unical 9000-X… and Uniclean 900-X…
No.: IECEx DEK 22.0022 | 2022-07-28
Issue No. 0
[14655] EU Declaration of Conformity (DE, EN, FR)
Protos Type 3400X*/***& Protos II Type 4400X*/***
No. EU221019A | 2022-10-19

Installation guides

[14618] Installation Guide
Protos II 4400(X) - Replacement of FRONT Module
Version 01
[16963] Installation Guide / Installationsanleitung
ProgaLog 4000 | PC configuration tool for transmitters / ProgaLog 4000 | PC-Parametriertool für Transmitter
Version 01
[14541] Installation Guide
Protos II 4400(X) FRONT and BASE Modules
Module FRONT und BASE
Version 04

Safety guides

[14624] Safety Guide
Protos II 4400(X)

Control Drawings

[16770] Control Drawing
Protos 3400X, Protos II 4400X & Modules
Zeichnungsnummer 201.003-170 page 1 rev.4
cFMus

Software

[18054] Software
KnUT (Knick Update Tool)
[18016] Software
Progalog Configuration Tool
[13836] DTM (Pactware)
COMPA 3400(X)-081
Firmware Version ≧ COMPA 2.4.00
Device Revision 301.7
[17196] FDI
COMPA 3400(X)-081
Firmware Version ≧ COMPA 2.4.00
Device Revision 301.1
[16425] EDD (PDM)
COMPA 3400(X)-081
Firmware Version ≧ ≥ COMPA 2.4.00
Device Revision 301.6
[16437] DTM (Pactware)
COMPA 3400(X)-081
Firmware Version ≧ COMPA 2.2.00
Device Revision 301.6
[18035] GSD
PN4400-095
[13831] EDD (PDM)
COMPA 3400(X)-081
Firmware Version ≧ COMPA 2.4.00
Device Revision 301.7
[16419] GSD
COMPA 3400(X)-081

Our service

Used in Process or Applications

pH value measurement in the pre-scrubber, the neutralization phase, and the lime scrubber as part of the flue gas desulfurization process in power plants.
Toxic sludge that must be treated for phosphorus recovery is produced in biological wastewater treatment plants.

Relevant Blog Posts

SE605H conductivity sensor with CondCheck: Integrated sockets for connecting a resistance decade

SE605H Conductivity Sensor with CondCheck

The SE605H conductivity sensor with CondCheck enables USP 645 verification without interrupting the measuring chain.
Knick’s large, international team at its ACHEMA 2024 trade fair booth.

ACHEMA 2024 - Review and Impressions

A brief cinematic retrospective of our trade fair booth, Knick’s international team, and a successful booth party.

Uniclean 700 Series - Modular control system for automated sensor cleaning

With the Uniclean 700 series, Knick is introducing a modular control system, that can be installed very quickly and cost-effectively as a flexible entry-level solution for automated sensor cleaning.

Knick Austria - direct customer contact in Austria from 2024

Reorganization of sales in Austria and new contacts in the field of process analytics and interface technology

Robust WA111 Retractable Fitting Made of Plastic for Highly Corrosive Operating Conditions

The plastic WA111 retractable fitting is a robust and cost-effective solution for corrosive processes and environments. It is equipped with a secure lock function and multiple nozzles for thorough sensor cleaning.