Starting at $3,376.32

Not in stock. Usually ships in 2-4 weeks [?]

Need Help? Call a Calibration Engineer 1-800-884-4967

We're open 8:00am to 5:00pm ET


  • Operating temperature
    • H2S: -40 to 122°F (-40 to 50°C)
    • O2 Depletion: -22 to 122°F (-30 to 50°C)
    • CO: -22 to 122°F (-30 to 50°C)
  • Detection Range
    • H2S: Gas Concentration Level 0-100 ppm range
    • O2 Depletion: Gas Concentration Level 0-25 % by volume
    • CO: Gas Concentration Level 0-1,000 ppm range
  • Accuracy
    • H2S: ± 3 ppm or 10 % of reading, whichever is greater
    • O2 Depletion: ±Within 0.5 % of oxygen content of supply gas
    • CO: ± 6 ppm or 10 % of reading, whichever is greater
  • 1 sec to 60 min, user selectable update rate
  • Intrinsically Safe, CSA Division 1, and ATEX/IECEx Zone 0

The Rosemount 928 Wireless Gas Monitor detects hydrogen sulfide (H2S), carbon monoxide (CO), and oxygen depletion (O2) in remote applications previously too challenging and costly to monitor. This wireless toxic gas monitoring system enhances worker safety through early gas leak detection, simply integrates with WirelessHART™ technology, and eliminates the need for expensive wiring. The Rosemount 928 Wireless Gas Monitor easily connects to the Rosemount 628 Universal Gas Sensor which consists of a tool-less-hot-swappable smart sensor module.

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

Rosemount 628 Universal Gas Sensor
Consistent toxic gas sensing to challenging and remote locations


Please consider these optional accessories.

Rosemount B4 928 Mounting Bracket
Spare, B4 mounting bracket for 928 Wireless Gas Monitor
Rosemount 701PBKKF SmartPower Module
7.2V intrinsically safe power module designed to withstand harsh environments & replace easily while in the field