Rosemount™ 628 Universal Gas Sensor

The Rosemount 628 Series of electrochemical toxic gas sensors provides high specificity, fast response and long life. All Rosemount 628 Sensors are compatible with the Rosemount 928 Wireless Gas Monitor. The electrochemical sensor cell incorporates industry-standard technology that is used in conventional wired gas detectors to bring consistent toxic gas sensing to challenging and remote locations. Gas sensor types include hydrogen sulfide (H2S), carbon monoxide (CO), and oxygen depletion (O2). Operating Temperature: H2S: -40 °F to +122 °F (-40 °C to +50 °C )O2Depletion: -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 greaterO2Depletion: Within ±0.5% of oxygen content of supply gasCO: ±6 ppm or 10% of reading, whichever is greater Time Constant / Response: H2S: T90 < 45 secondsO2Depletion: T90 < 15 secondsCO: T90 < 29 seconds Detection Range: H2S: Gas Concentration Level 0-100 ppm rangeO2Depletion: Gas Concentration Level 0-25% by volumeCO: 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