Comparison : |
Item # Model 470N7MC, Model 470N7MC, Methane Analyzer, Wall Mounted NEMA7 UL/CSA Explosion-proof with Non-intrusive Magnetic Calibration, Class 1 Div 1 Group BCD Item # Model 470RMN7, Model 470RMN7, Methane Analyzer, ex-proof sensor housing with rack mount control cabinet (two separate enclosures) Item # Model 420 D1 or D2, Model 420 D1 or D2, Methane Analyzer, with cabinet purge systems for hazardous areas
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