NECI

Rosemount™ 928 Wireless Gas Monitor

Rosemount™ 928 Wireless Gas Monitor

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.

Specs

Operating Temperature

H2S: -40 °F to +122 °F (-40 °C to +50 °C)

O2 Depletion: -22 °F to +122 °F (-30 °C to +50 °C)

CO: -22 °F to +122 °F (-30 °C to +50 °C)

Update Rate

1 second to 60 minutes, user selectable

Time Constant / Response

H2S:

• T20
  • T50

    O2:

    • T90

      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

      Power Supply

      Replaceable, intrinsically safe lithium-thionyl chloride power module with PBT polymer enclosure

      Antenna Type

      PBT/PC integrated omnidirectional antenna

      Humidity Range

      H2: 10-95 % Relative Humidity Non Condensing

      O2: 10-95 % Relative Humidity Non Condensing

      CO: 5-95 % Relative Humidity Non Condensing

      Enclosure Rating

      IP66 ingress protection (IP) filter

      Housing Material

      Low-copper aluminum (A360) or stainless steel

      Certifications/Approvals

      Intrinsically Safe, CSA Division 1, and ATEX/IECEx Zone 0

      Outputs

      IEC 62591 WirelessHART 2.4GHz DSSS. Optional discrete output to support local alarms

      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

      Features

      • T90
        • Hot-swappable electrochemical sensor module with end-of-life diagnostics that can be installed in the field without tools.
        • Replaceable, intrinsically safe lithium-thionyl chloride power module. The power module has over two years of service life and can be easily exchanged in the field in hazardous locations.
        • WirelessHART technology is secure, cost-effective and delivers >99% data reliability
        • Easy, intuitive installation enables a quick method to add safety monitoring without the cost of wiring
        • High performance monitoring comparable to conventional wired gas monitors with an accuracy of ±3 ppm or 10% of reading, whichever is greater