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Key features
  • Comprehensive solution for industrial and medical gas manufacture and for pharmacopeia applications 
  • Measures up to four gas streams simultaneously 
  • Integrated support for the AquaXact 1688 Aluminum Oxide moisture transmitter 
  • Digital communications for remote access: RS232/RS485 Modbus and PROFIBUS (Ethernet Modbus TCP/ IP to follow) 
  • Up to 32 alarms and 32 relays with follow or freeze options 
  • Four analog outputs and four analog inputs 
Easy to use
Low cost of ownership
Unrivalled performance
Benchmark compliance

The SERVOPRO MultiExact 4100 is a high- performance multi-gas analyzer designed to provide up to four simultaneous gas stream measurements including: O2 (trace, control, and purity), CO2, CO (% and trace), N2O, CH4 (trace). 

Specifically designed to address the needs of industrial and medical gas manufacturers, the MultiExact 4100 can be fitted with a wide range of sensing technologies – Paramagnetic, Zirconia, Gas Filter Correlation Infrared (GFx), single-beam Infrared (SBSW) and Aluminum Oxide.

These proven, digital sensors not only provide highly accurate measurements but also offer operational flexibility in a range of industries and applications. The non-depleting, high-stability sensing technologies help extend maintenance intervals while intelligent functionality such as independent auto-calibration helps to deliver operational efficiencies over a long product life. 

Using the same reliable measurement technology as the SERVOPRO 4100 and MultiExact 5400, the new MultiExact 4100 is backward-compatible with existing installations, providing trusted gas analysis while offering the advanced digital communications that many modern systems require. 

Download new Firmware update (20/04/2020)


132.5mm (5.2”) high (265.5mm (10.5”) high with expansion chassis), 481.6mm (19”) wide, 544.2mm (21.4”) deep 

  • Main unit: approx 14kg (30.9lb)
  • Expansion chassis: approx 13.7kg (30.2lb) (dependent on number and type of sensors used) 
  • EN 61010-1: Safety requirements for electrical equipment for measurement, control and laboratory use 
  • EN 61326-1: Electrical equipment for measurement, control and laboratory use 
  • EMC requirements 
  • Installation Category II rated in accordance with IEC664 
Key Applications
  • Product purity on air separation plant 
  • Process control on air separation plant 
  • Bottling/filling plant applications 
  • Monitor trace CO2 on scrubbed air inlet to air separation process
  • Validation of medical O2, N2, air and He
Service and Spares

Ensure your MultiExact 4100 delivers optimum performance with Servomex Service Network.

Through our global network of engineers and service centers, we provide complete lifetime support for your analyzer. Our services range from installation and commissioning to supplying high quality spares and arranging scheduled servicing: visit our Service Network pages to find out more.

Global Service Network