QGM

Versatile and Rugged Multi Gas Detector

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

When the concentrations of these gases exceed the alarm thresholds, the WatchGas QGM alerts the user by vibrating, flashing LEDs and a 90dB acoustic alarm. An integrated data- and event logger registers measure values, as well as peak and average values, alarms, calibration dates and bump test information for up to two months. All logs can be downloaded to your PC through the WatchGas IR-link software

  • IECEx and ATEX Zone 0 approved
  • Simple single button operation
  • Durable, grippy housing
  • Displays actual gas concentrations, TWA and STEL values
  • Adjustable alarm levels using the WatchGas IR Link
  • Data log: up to two months or more
  • Optical, acoustic and vibrating alarms
  • Docking station available for rapid bump test and calibration
  • Battery up to two months (IR only)
  • Perfect in, for example, the mining industry or on (petro)chemical plants

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Size 60mm x 40mm x 118mm
Weight 240g (including cip)
Sensor Technology Catalytic or Infrared (LEL), Electrochemical (O2, CO, H2S)
Temperature -20°C ~ +50°C
Humidity 10 ~ 95% RH (non-condensing)
Alarm Type High alarm, low alarm, STEL alarm, TWA alarm, over range alarm, battery low alarm, bumptest and calibration due notification
Alarm Signal Acoustic: 95dB @ 10cm
Visual: LCD alarm display, LCD backlight indicator LED
Vibration alarm
Display LCD Display
Calibration 2-point calibration, zero and span
Data Log Data log 2 months or more
Event log /calibration log / bump log: 30 events
Battery Type: Lithium-ion rechargeable battery
Charging time <6h
Measurement Diffusion
Housing Rugged durable housing with impact proof coating IP-67
Response Time T90 <15 sec [LEL] / <15 sec [O2]
<30 sec [CO] / <30 sec [H2S]
Accuracy Deviation 2-3%
Operation Time QGM CAT: 24h
QGM IR: 2 months
IP-Rating IP67
Safety Certification QGM IR:
IECEX/PESO: Ex ia IIC T4 Ga
ATEX: II 1G ia IIC T4 Ga
CSA/UL: Class I, Division 1, Groups A,B,C and/or D, T4
Ex ia IIC T4 Ga
INMETRO: Ex ia IIC T4 Ga
CE: Conformité Européenne

QGM CAT:
IECEX: Ex da ia IIC T4 Ga
ATEX: II 1G da ia 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
Sensor Lifetime (expected) O2: 2 years
CO, H2S, LEL: 5 years 
Warranty 2 years 

Model Detectable Gas Ranges Resolution Response time T90 Sensor Lifetime (expected
QGM O2 0-30 %vol 0.1 %vol < 15 sec 2 years
QGM CO 0-500 ppm 1 ppm < 30 sec 5 years
QGM H2S 0-100 ppm 0.1 ppm <30 sec 5 years
QGM LEL 0-100 % LEL 1 % LEL <15 sec 5 years

Description Article Number
QGM CAT
LEL 0-100% LEL		 7177138
QGM CAT
O2 0-30 %vol / LEL 0-100% LEL		 7177137
QGM CAT
O2 0-30 %vol / LEL 0-100% LEL
CO 0-500 ppm / H2S 0-100 ppm		 7177135
QGM IR
LEL 0-100% LEL		 7177131
QGM IR
O2 0-30 %vol / LEL 0-100 % LEL		 7177132
QGM IR
O2 0-30 %vol / LEL 0-100% LEL
CO 0-500 ppm / H2S 0-100 ppm		 7177134
QGM Multi Docking Station 7189182
QGM Mono Docking Station 7189181
WatchGas QGM IR Link 7189170
WatchGas QGM Calibration Cap 7189183
WatchGas QGM Single Charger 7177212
WatchGas QGM 5-Way Stackable Charging Craddle 7177213
WatchGas QGM Charger for 5-Way Stackable Charging Cradle 7177214

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