OXYMAT 61 gas analyzer, 19" rack unit for installation in cabinets Pipe with 1/4" outer diameter 2 % reference gas pressure 3000 hPa . . . AC 100 to 120 V, 48 to 63 Hz With sample gas monitoring (incl. flow indicator and pressure switch) AUTOCAL function with 8 additional digital inputs/outputs and PROFIBUS DP interface English TAG labels (specific lettering based on customer information) Clean for O2-Service (specially cleaned gas path)