WatchGas QGM Use and care manual

WatchGas B.V. | Klaverbaan 121 | 2908 KD Capelle aan den IJssel | The Netherlands | [phone] | www.watchgas.eu | [e-mail]
WatchGas is dedicated to continuously improving its products.Therefore, the specifications and features mentioned in this datasheet are subject to change without prior notice.
WatchGas Application Note 6 Part 2: WatchGas QGM Calibration v1.1 19-01-21 © 2021 WatchGas B.V.
This document describes the preferred calibration procedure of the WatchGas QGM. If you require any assistance, feel free
to contact us at [e-mail]
Equipment
To 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 gas
The use of the WatchGas IR link and IR link software is not required, but it’s certainly recommended. Span values 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 calibration gases.
Note that these gases are available in a multi-gas mixture. Calibrating using a multi-gas mixture is most cost and
time ecient.
Adequate safety measures should be taken when working with these type of gases. Avoid personal exposure at all
times by working under a fume hood and/or wearing personal protective equipment.
List with commonly used calibration gases
Description Size Article Number
18%O2 / 2.2%CH4 / 50CO / 10H2S in N2116L CAL-C017064
18%O2/ 2.2%CH4/ 50CO / 10H2S in N234L CAL-C009147
18%O2/ 2.5%CH4/ 2%CO2/ 50CO / 15H2S in N258L CAL-C015013
100ppm I-C4H8in Air 34L CAL-C008920
100ppm I-C4H8in Air 116L CAL-C006392
18%O2/ 2.2%CH4/ 50CO / 10H2S in N258L CAL-C011916
18%O2/ 2.2%CH4/ 0.5%CO2/ 100CO / 25H2S in N258L CAL-C012017
18%O2/ 2.5%CH4/ 100CO / 25H2S in N234L CAL-A1069841
100% N2(UHP) 116L CAL-A0961956
18%O2/ 2.2%CH4/ 0.5%CO2/ 100CO / 25H2S in N234L CAL-C009266
100ppm I-C4H8in Air 58L CAL-C015004
50ppm NH3in N258L CAL-C011793
20.9% / 1.1%CH4/ 200ppm CO in N2116L CAL-C019604
15%O2 / 1.45%CH4/2.5%CO2/ 60CO / 20H2S in N258L CAL-C012032
18%O2/ 2.2%CH4/ 100CO / 25H2S in N258L CAL-C011921
15%O2/ 1.45%CH4/ 60CO / 20H2S in N234L CAL-C009154
18%O2/ 2.2%CH4/ 100CO / 25H2S in N234L CAL-A0915728
18%O2/ 2.2CH4/ 50CO in N2116L CAL-A0975762
10ppm H2S in N2116L CAL-C017065
25ppm H2S in N258L CAL-C011126
WatchGas QGM Calibration
Application Note 6 Part 2

WatchGas B.V. | Klaverbaan 121 | 2908 KD Capelle aan den IJssel | The Netherlands | [phone] | www.watchgas.eu | [e-mail]
WatchGas is dedicated to continuously improving its products.Therefore, the specifications and features mentioned in this datasheet are subject to change without prior notice.
WatchGas Application Note 6 Part 2: WatchGas QGM Calibration v1.1 19-01-21 © 2021 WatchGas B.V.
Manual calibration using the IR link
To calibrate the WatchGas QGM using the IR link, use the following steps:
1. Turn on the device and wait for all sensor to warm-up.
2. Place the device onto the IR link and start the IR link software
3. Check all settings using the IR link software. Verify that calibration gas concentrations match the
concentrations in the gas cylinder.
4. Open the calibration window and start the Zero Calibration. This will take 10 seconds.
5. Connect the 0.5 L/min regulator to the gas cylinder. Attach the Last-O-More hose and calibration
adapter.
6. Connect the Calibration adaptor to the device.
7. Start the Span Calibration in the IR link software. Start gas ow. Span Calibration will take 90 seconds.
Ensure the device and IR link stay connected during this time.
8. The calibration result is shown in the device for each sensor individually. Afterwards, the device will
return to measurement mode.
9. Turn o gas ow and disconnect the calibration adapter. Wait for the gas readings to return to 0.
10. Reboot the device and verify calibration result by applying the same concentration of calibration gas,
preferably from another cylinder.

WatchGas B.V. | Klaverbaan 121 | 2908 KD Capelle aan den IJssel | The Netherlands | [phone] | www.watchgas.eu | [e-mail]
WatchGas is dedicated to continuously improving its products.Therefore, the specifications and features mentioned in this datasheet are subject to change without prior notice.
WatchGas Application Note 6 Part 2: WatchGas QGM Calibration v1.1 19-01-21 © 2021 WatchGas B.V.
Automatic calibration using the WatchGas QGM Docking station
To calibrate the WatchGas QGM with Docking Station, use the following steps:
1. Turn on the device and wait for all sensor to warm-up.
2. Turn on the docking station. Ensure the docking station is congured correctly and there’s sucient
gas remaining on the internal gas cylinder.
3. Place the QGM in the docking station.
4. Press the Calibration button.
5. The docking station will now preform the Zero and Span Calibration automatically.
6. When the Calibration is nished, remove the device from the docking station.

WatchGas B.V. | Klaverbaan 121 | 2908 KD Capelle aan den IJssel | The Netherlands | [phone] | www.watchgas.eu | [e-mail]
WatchGas is dedicated to continuously improving its products.Therefore, the specifications and features mentioned in this datasheet are subject to change without prior notice.
WatchGas Application Note 6 Part 2: WatchGas QGM Calibration v1.1 19-01-21 © 2021 WatchGas B.V.
Manual calibration
To calibrate the WatchGas QGM by hand, use the following steps:
1. Turn on the device and wait for all sensor to warm-up.
2. Press the single button 8 times to reach the calibration menu, indicated by the gas cylinder icon in the
upper right corner. The calibration gas concentrations are also displayed. Press and hold the button.
3. When in the calibration menu start a Zero Calibration by pressing and holding the button. The Zero
Calibration will take 10 seconds.
4. Connect the 0.5 L/min regulator to the gas cylinder. Attach the Last-O-More hose and calibration
adapter.
5. Connect the Calibration adaptor to the device
6. Press and hold the button to start the Span Calibration. Start the gas ow. The span calibration takes
90 seconds.
7. The calibration result is shown for each sensor individually. Afterwards, the device will return to
measurement mode.
8. Turn o gas ow and disconnect the calibration adapter. Wait for the gas readings to return to 0.
9. Reboot the device and verify calibration result by applying the same concentration of calibration gas,
preferably from another cylinder.
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