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Rosemount™ 628 Universal Gas Sensor
rosemount-628-front-1
rosemount 628 toxic gas sensor
Rosemount 628 Sensors detect combustible or toxic gases.
These intrinsically safe Modules are compatible with the Rosemount 928 Wireless Gas Monitor. Toxic gas sensors incorporate industry-standard technology that is used in conventional wired gas detectors to bring consistent toxic gas sensing to challenging and remote locations. Combustible gas sensors use Micro‑Electro‑Mechanical Systems (MEMS) technology to classify and detect flammable gas, providing accurate results without use of calibration adjustments.
Rosemount™ 628 Universal Gas Sensor

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)
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
Time Constant / Response
H2S: T90 < 45 seconds
O2 Depletion: T90 < 15 seconds
CO: T90 < 29 seconds
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
Certifications/Approvals
Intrinsically Safe, CSA Div 1 ANSI/ISA 92.00-2010 (R2015), ATEX/IECEx Zone 0

Features

  • Compatibility: Rosemount 928 Wireless Gas Monitor (WirelessHART®)
  • Certifications/approvals: Intrinsically Safe, CSA Div 1; ANSI/ISA 92.00-2010 (R2015); ATEX/IECEx Zone 0