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Drager Vamos Plus Anesthetic Gas Analyser

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Available in US only.

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Volatile Agent Monitoring System has the flexibility to meet your requirements both now and in the future.

The Vamos can be configured with CO2 and SpO2 monitoring and upgraded in the future to include monitoring for all 5 anesthetic agents and N2O. The upgrade option can easily be installed on site to minimize any disruption.

Vamos Plus offers automatic identification of the anesthetic agent and dual agent display when two agents are used. Vamos Plus can be configured to meet the following two specifications:

  • Anesthetic agents, CO2 and N2O
  • Anesthetic agents, CO2, N2O and SpO2


The SpO2 option for the Vamos uses proven Nellcor technology. This ensures compatibility with a wide range of pulse oximetry sensors and accessories. An optional battery backup is available for the Vamos, enabling the monitor to operate independently of the main power supply for at least an hour.


At the heart of the Vamos is a new gas sensor developed by Drager which incorporates the very latest in innovative micro optic technology. Because this sensor has nomoving parts, it is particularly robust and reliable with just a small pump to maintain a constant flow of 200 mL/min for the sample gas. The sensor’s performance reflects Drager’s core competence in infrared gas-detection technology with a design commitment to long-life components and quality. The latest innovation in gas measurement technology has been integrated in Vamos Plus. Anesthetic agent measurement and dual agent gas measurement is now possible with Vamos Plus. The Vamos anesthetic gas monitor is a compact, flexible solution to meet your respiratory gas monitoring needs. As your monitoring requirements change, the Vamos can be reconfigured to meet them, thereby reducing the risk of premature obsolescence. In addition to flexible design, the Vamos provides excellent long-term value through the use of the latest solid-state optical technology.



  • Measured parameters: CO2, N2O, 5 anesthetic agents, SpO2 (Nellcor)
  • Gas measurement: breath to breath resolution
  • Rise time: < 500 ms (agents), < 350 ms (CO2)
  • Principle of measurement: advanced infrared technology, sidestream sample principle
  • Accuracy: as per ISO 21647
  • Sample flow rate: 200 mL/min
  • Dimensions WxHxD: 9.4" x 6.5" x 6.5" (240 x 166 x 165 mm)
  • Weight: 2.4 kg including the internal battery
  • Power consumption: peak consumption in the warm-up phase < 55 W during operation < 45 W
  • Operating voltage: 100 - 240 V, 50/60 Hz, external power pack with country-specific connections
  • Battery backup operation (optional): > 1 hour
  • Outputs: RS 232 Medibus, RS 232 (onlyfor service), Sample gas outlet (for sample gas supplyto anesthetic gas scavenging system)


  • High-contrast amber electroluminescent display with excellentvertical and horizontalviewing angles
  • Display size: 5" diagonal 4.25" x 2.28" (127 mm diagonal 108 x 58 mm)
  • Graphic display of CO2 waveform
  • Numeric display: Fractional inspiratory concentration (Fi) of CO2, N2O and of selected agent (Vamos) or identified agent (Vamos plus); End-tidal concentration (Fet) of CO2, N2O and selected agent (Vamos) or or identified agent (Vamos plus)
  • Oxygen saturation (SpO2): ISO 9919