WatchGas IR LEL Multi Gas Monitor


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WatchGas IR LEL Multi Gas Monitor is a portable multi-gas device designed to keep you and your workers safe when operating in dangerous conditions. The WatchGas Multi-Gas Monitor allows the monitoring of up to four separate gases. WatchGas IR LEL Monitor tracks Oxygen, helium, carbon monoxide, sulfide, and gasoline gases.
Applications: (Petro)chemical plants and factories, Tank storage parks, Wastewater treatment facilities, Mining industry, Construction sites, Governments/first responders, Food and beverage industry.

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WatchGas IR LEL Multi Gas Monitor tracks Oxygen, helium, carbon monoxide, sulfide, and gasoline gases. If these gases are above concentrations, Watch Gas QGM IR warns the user of warning thresholds. The IR Multi Gas Detector is energy-efficient, and Boost battery life for up to two months loaded single.
Features of WatchGas IR LEL Multi Gas Monitor :

  • This Infrared Multi-Gas Monitor has an Authorized IECEx and ATEX zone 0.
  • Robust, safe housing.
  • This IR Multi-Gas Monitor has an Easy single-button operation.
  • Shows real amounts of carbon, TWA, and STEL values.
  • Customizable warning levels using the IR WatchGas Connection.
  • This Portable Multigas Detector can Datalog up to two months or more.
  • Electronic, acoustic, and vibrating detector.
  • Can work in INERT ATMOSPHERE.

Additional information

Weight 1 kg




Measuring Parameters

(* Excluding Hydrogen), IR LEL*, CO, H2S, Oxygen

IR LEL Range

0 to 100 %LEL

IR LEL Resolution

1 % LEL

IR LEL Response time

< 3sec/90%scale

O2 Gas Range

0 to 30 %VOL

O2 Gas Resolution

0.1 %VOL

O2 Gas Response time

< 15sec/90%scale

CO Gas Range

0 to 500 ppm

CO Gas Resolution

1 ppm

CO Response time

< 30sec/90%scale

H2S Gas Range

0 to 100 ppm

H2S Resolution

0.1 ppm

H2S Response time

< 30sec/90%scale

Sensor life time

> 2 year, 5 years for IR LEL

Alarm Display

Digital LCD display, LCD Backlight, indicator LEDs, flashing alarm


Single Button

Operation mode display

Visual: LCD alarm display, LCD Backlight, Indicator LED
Acoustic: buzzer (90 db @ 10 cm) and vibrating alarm

Operating temperature

-20 to +50° C

Operating Humidity

10 to 95% RH, non-condensing

Operating time

QGM-CAT: 24 hours, QGM-IR: 2 months


WatchGas IR Link with PC software

Mounting type

Stainless steel belt clip

Approval QGM-IR

Class I, Division 1, Groups A,B,C,
and/or D, T4
Ex ia IIC T4 Ga
Class 1, Zone 0, AEx ia IIC T4 Ga
Sira 18ATEX2059X
Inmetro: Ex ia IIC T4 Ga
EAN-13: 8719992974877 (LEL/O2/
EAN-13: 8719992974894 (LEL/O2)
EAN-13: 8719992974900 (LEL)

Event log

Data log 2 months or more
Event log / calibration log / bump log: 30 event


Type: Lithium-ion rechargeable battery
Charging time < 6h


60 X 40 X 118 mm (WxDxH)


240 g

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WatchGas QGM IR Multi-Gas Monitor

WatchGas IR LEL Multi Gas Monitor


(GST 18% Exclusive)

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