Industrial Scientific Ventis® Pro Series Multi-Gas Monitors 

Stop carrying multiple instruments to meet your gas detection needs. The Ventis® Pro Series has you covered whether you need unique four-gas or expanded five-gas sensor options, all in the most configurable multi-gas monitors on the market.


  • Detect up to five gases: Rely on flexible sensor options to detect combustible and toxic gases in a broad range of settings, making the Ventis Pro Series ideal for both personal protection and confined space applications.
  • Simplify gas detection for the users: Create custom start-up messages to communicate safety information to the team, see gas readings and alarms from connected peers using LENS Wireless , acknowledge low gas levels, and receive written instructions when an instrument goes into alarm.
  • React in emergency situations: Know when a worker is in distress or has lost consciousness thanks to a dedicated panic button and man-down alarm. Panic and man-down alarms will be relayed to other Ventis Pros in the group using LENS Wireless .
  • Track instruments and alarms: Address recurring alarms and improve asset management by assigning users and sites to each gas monitor in real time using iAssign™ Technology .
  • Depend on a rugged design:  Keep the instruments in the field, not the shop, thanks to an IP68 rating for dust and water ingress and a rugged overmold that is Guaranteed for Life™ .
  • Upgrade with ease: Don't buy all new accessories. Most of the Ventis™ MX4 accessories are compatible with the Ventis Pro Series.


  • LENS Wireless is the first gas detection solution that allows personal monitors and area monitors to share gas readings and alarms with one another. Now when a gas hazard, man-down, or panic situation causes an instrument to alarm, all peers in the connected group will instantly be notified of the hazard and the person in danger. When seconds matter, you can rely on help from workers nearby, rather a call center hundreds of miles away. 
  • iAssign Technology uses Near Field Communication (NFC) and Bluetooth technology to assign workers and locations to Ventis® Pro Series gas detectors. Access to user and site data allows you to locate problem areas across your facility, stay compliant with clear and accurate record keeping, and alert workers when they enter restricted areas. iAssign provides a more complete picture of what's happening across a worksite, enabling safety managers to take action to prevent repeated hazards.
  • DualSenseDualSense Technology uses redundant sensors to determine the concentration of the target gas in the atmosphere and reduce the risk of instrument failure. Two sensors of the same type in one gas detector help to give you the most accurate gas reading.


  • SENSORS: Combustible Gases/Methane - Catalytic Bead,O2, CO, CO/H2 low, H2S, HCN, NH3, NO2, PH3, SO2- Electrochemical, CH4, CO2/LEL, CO2/CH4 – Infrared
  • WARRANTY: Guaranteed for Life. Warranted for as long as the instrument is supported by Industrial Scientific Corporation (excludes sensors, batteries, and filters). O2, LEL, CO, and H2S sensors warranted for three years. All other sensors warranted for two years. Pumps and batteries are warranted for two years.
  • DATA LOG: At least 3 months at 10-second intervals
  • EVENT LOGGING: 60 alarm events
  • INGRESS PROTECTION: IP68 (submersion at 1.5 meters for 1 hour)
  • CASE MATERIAL: Polycarbonate with protective rubber overmold
  • DIMENSIONS: 104 x 58 x 36 mm (4.1 x 2.3 x 1.4 in) without pump

        172 x 67 x 65 mm (6.8 x 2.6 x 2.6 in) with pump

  • WEIGHT: 200 g (7.05 oz), typical without pump

                            390 g (13.76 oz), typical with pump

  • TEMPERATURE RANGE: -40° C to 50 °C (-40° F to 122° F)