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Multi Gas Detector-QGM

The WatchGas QGM is a versatile multi-gas monitor designed to keep you and your staff safe while working in hazardous environments. The WatchGas QGM offers detection of up to four different gases: Oxygen, Hydrogen Sulfide, Carbon Monoxide, and combustible gases.

When the concentration of these gases exceeds the warning threshold value, the WatchGas QGM will notify the user by vibrating, blinking the LED, and sounding a 90dB alarm.

The integrated data logger records measurement values, as well as peak and average values, alarms, calibration dates, and impact test information for up to two months. All records can be downloaded to your PC via the WatchGas IR-link software.
Watch Gas

Product Details


  • Size: 60mm x 40mm x 118mm
  • Weight: 240gr
  • Sensor Technology: Catalytic Sensor for LEL, and Electrochemical (O2, CO, H2S)
  • Temperature: -20°C ~ +50°C
  • Humidity: 10% ~ 95% (non-condensing)
  • Alarm Type: Low, High, TWA, STEL alarm, Man-Down alarm with pre-alarm, alarm condition indication on the display
  • Alarm Signal: Acoustic 95dB @ 30cm with bright red LED
  • Panic Alarm: Yes
  • Display: LCD Display
  • Data Log: Data logging for 2 months or more, event/calibration/bump log up to 30 logs
  • Battery: Lithium Ion, up to 12 hours of operation
  • Measurement method: Diffusion
  • T90 Sensor response time: <15 seconds (LEL &O2) <30 seconds (CO & H2S)
  • Accuracy Deviation: 2-3%.
  • Protection: IP IP67
  • Certification: IECEX: Ex and IIC T4 Ga ATEX: II 1G and IIC T4 Ga CSA/UL: Class I, Division 1, Groups A, B, C, and/or D, T4 Ex da ia IIC T4 Ga
  • INMETRO: Ex da ia IIC T4 Ga CE: Conformité Européenne

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Frequently Asked Questions

Can we find the PT HAS product on the e-catalogue (LKPP) ?

Absolutely, almost all PT HAS products can be found in the e-catalogue.

How about the warranty for products from PT HAS ?

PT HAS Supply’s products include a 1-year official warranty for damage caused by manufactured defects.

Has the PT HAS product been calibrated? What if the calibration period is over?

Products from PT HAS have been calibrated and are ready to use. For further calibration, PT HAS already has a calibration lab that is ISO 17025 accredited and is ready to help customers who need recalibration.

What if the product has a problem and needs repair?

PT HAS has a local service center (in Jakarta), and our technicians are trained in the manufacture of the products we are agents for. For repairs and troubleshooting, we try to do it locally. and we make sure that the spare parts we supply are official spare parts from manufacturers.

Do we get training on using the tool after making a purchase at PT Has?

For all product purchases at PT HAS, usage training is included and is unlimited.

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