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  • 10% to 90% RH, non-condensing
  • 5° to 45°C (41° to 113°F) operating temperature
  • Measuring technologies:
    • Paramagnetic and Zirconia for O2
    • Aluminum Oxide, SBSW IR and Infrared (Gfx) for other gases
  • Up to four 4-20mA analog inputs
  • Up to eight digital inputs (2 per transducer)
  • Up to 32 alarms and 32 relays
  • PROFIBUS Communication option available


The Servomex SERVOPRO MultiExact 4100 multi-gas analyzer uses paramagnetic, GFx infrared, SBSW infrared, zirconia and aluminum oxide sensing technologies to provide accurate gas stream measurements. With flexible analysis solutions capable of meeting specific process monitoring needs, the MultiExact 4100 delivers precise and stable results at every point of the ASU process.

The MultiExact 4100 has plug-and-play support for the Servomex AquaXact 1688 moisture sensor. It also supports up to 32 relays/alarms and four analog inputs for information collection from external sensors such as temperature, pressure or data from another gas sensor. Analog and digital communications include 0-10VDC, 4-20mA, RS232 and RS485 outputs. Optional advanced digital protocols such as Serial Modbus, PROFIBUS, and Ethernet (Modbus TCP/IP) are also available. The easy-to-use interface utilizes a color touchscreen display and an intuitive, icon-driven navigation.

The Servomex SERVOPRO MultiExact 4100 Multi-Gas Analyzer is designed to provide up to four simultaneous gas stream measurements including:

  • Oxygen (O2)
  • Carbon dioxide (CO2)
  • Carbon monoxide (CO)
  • Nitrous oxide (N2O)
  • Methane (CH4)
  • Moisture (H2O)