D e t e c t i o nWatchGas QGM Calibration ManualThis document describes the preferred calibration procedure of the WatchGas UNI product range. If you requireany assistance, feel free to contact us at info@watchgas.nlEquipmentTo calibrate the WatchGas QGM the follow equipment is needed:• WatchGas QGM• WatchGas QGM Calibration adapter• 0.5 L/min regulator• Last-O-More hose• WatchGas IR link (optional)• Calibration gasThe use of the WatchGas IR link and IR link software is not required, but it’s certainly recommended. Spanvalues can only be changed using the IR link software.The WatchGas QGM can only measure O2, LEL, CO and H2S. Please refer to our well-priced list of calibrationgases. Note that these gases are available in a multi-gas mixture. Calibrating using a multi-gas mixture ismost cost and time efficient.Adequate safety measures should be taken when working with these type of gases. Avoid personalexposure at all times by working under a fume hood and/or wearing personal protective equipment.List with commonly used calibration gasesDescription Size Article Number18%O2 / 2.2%CH4 / 50CO / 10H2S in N2 116L CAL-C01706418%O2 / 2.2%CH4 / 50CO / 10H2S in N2 34L CAL-C00914718%O2 / 2.5%CH4 / 2%CO2 / 50CO / 15H2S in N2 58L CAL-C015013100ppm I-C4H8 in Air 34L CAL-C008920100ppm I-C4H8 in Air 116L CAL-C00639218%O2 / 2.2%CH4 / 50CO / 10H2S in N2 58L CAL-C01191618%O2 / 2.2%CH4 / 0.5%CO2 / 100CO / 25H2S in N2 58L CAL-C01201718%O2 / 2.5%CH4 / 100CO / 25H2S in N2 34L CAL-A1069841100% N2 (UHP) 116L CAL-A096195618%O2 / 2.2%CH4 / 0.5%CO2 / 100CO / 25H2S in N2 34L CAL-C009266100ppm I-C4H8 in Air 58L CAL-C01500450ppm NH3 in N2 58L CAL-C01179320.9% / 1.1%CH4 / 200ppm CO in N2 116L CAL-C01960415%O2 / 1.45%CH4/2.5%CO2 / 60CO / 20H2S in N2 58L CAL-C01203218%O2 / 2.2%CH4 / 100CO / 25H2S in N2 58L CAL-C01192115%O2 / 1.45%CH4 / 60CO / 20H2S in N2 34L CAL-C00915418%O2 / 2.2%CH4 / 100CO / 25H2S in N2 34L CAL-A091572818%O2 / 2.2CH4 / 50CO in N2 116L CAL-A097576210ppm H2S in N2 116L CAL-C01706525ppm H2S in N2 58L CAL-C011126Tech/App Note 6 part 2