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Sulphur dioxide – SO2

This page presents information on sulfur dioxide – or sulfurous anhydride – (SO2), appropriate detection means – SO2 detector – and suitable respiratory protective equipment (gas mask or powered air purifying respirator with E gas filter).

SO2 detector and sulfur dioxide respiratory protection for maximum safety

Sulfur dioxide properties

Sulfur dioxide (SO2) – also called sulfurous anhydride – is present in many fields of activity such as the pulp and paper industry, power plants, the cooling industry and fossil energy combustion (coal and fuel). It is also used for wine growing application (sulfiting). Even if it can be naturally found near volcanoes, this gas is essentially anthropogenic (man-made).

CASTWA (8 hours)STEL (15 minutes)LELIPDensity / AirFilter / SCBA
7446-09-52 ppm (TWA)5 ppm (STEL)12.3 eV2.26E

Sulfur dioxide effects on health

Sulfur dioxide (SO2) is a colorless gas with a pungent fragrance that may cause breathing system and eyes irritation starting at 1 ppm! Even if it is corrosive and harmful, this gas is above all toxic. It has been classified as R23 (toxic by inhalation) and R34 (causes burns). Lastly, sulfur dioxide is very reactive with many solvents (alcohol, toluene), and particularly with water to produce sulfuric acid (H2SO4). SO2 is also responsible for acid rain.

Sulfur dioxide exposure dangers, effects on health: why use an SO2 detector

Sulfur dioxide health effects (SO2)

SO2 detector - Sulfur dioxide

Despite its pungent and irritating smell, only an SO2 detector can accurately measure concentrations of this highly toxic gas. It is recommended to use a ppm or ppb sulfur dioxide detection.

The toxic gas detector GasBadge Pro ATEX series with interchangeable sensor. With a competitive price, this ATEX portable gas detector with interchangeable sensor combines power and flexibility.

  • Detection of Cl2, ClO2, CO, HCN, H2, H2S, NH3, NO2, O2, PH3, SO2.
  • Segmented LCD display for easy and direct reading
  • Internal data logging of alarm events and gas concentrations
  • CR2 3V lithium battery; 2,600 hours minimum runtime
  • Polycarbonate robust and waterproof housing
  • Additional information
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Portable toxic gas detector GASBADGE PRO

The toxic gas detector GasBadge Pro ATEX series with interchangeable sensor. With a competitive price, this ATEX portable gas detector with interchangeable sensor combines power and flexibility.

Portable gas detector GasBadge Pro
  • Detection of Cl2, ClO2, CO, HCN, H2, H2S, NH3, NO2, O2, PH3, SO2.
  • Segmented LCD display for easy and direct reading
  • Internal data logging of alarm events and gas concentrations
  • CR2 3V lithium battery; 2,600 hours minimum runtime
  • Polycarbonate robust and waterproof housing
Additional information

The GASBADGE PRO toxic gas detector is a classic single-gas detector. Its long-duration battery operates for about 2,600 hours and can be replaced when used. As for any other classic single-gas detectors, it is highly recommended to calibrate the GASBADGE PRO twice a year to ensure proper operation.

The GASBADGE PRO toxic gas monitor is a classic single-gas detector with interchangeable sensors and features a large range of electrochemical sensors. This technology is designed to detect toxic gases: Cl2 (chlorine), ClO2 (chlorine dioxide), CO (carbon monoxide), HCN (hydrogen cyanide), H2 (hydrogen), H2S (hydrogen sulfide), NH3 (ammonia), NO2 (nitrogen dioxide), O2 (oxygen), PH3 (phosphine) and SO2 (sulfur dioxide).

The GASBADGE PRO has 3 alarms: a powerful 95 dB audible alarm to alert even in noisy environments, a red LED visual alarm for view alert signals even in the darkest places like confined spaces and a vibrating alarm.

These alarms will be triggered by 4 events: if the lower or the upper limit values are reached, if concentrations get over the occupational exposure limit or if the average value threshold is exceeded. Abnormal gas concentrations and other data can also be saved and downloaded from the device.

Compact and lightweight, the GASBADGE PRO toxic gas detector is made with a strong polycarbonate housing with a robust and waterproof over-mold in compliance with IP67 protection. The GASBADGE PRO is ATEX approved as well for explosive atmosphere under current EU standards.

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Ultra-compact and lightweight, the X-am 5600 multi gas meter has been especially designed to detect the following gases: O2, Cl2, CO, CO2, H2, H2S, HCN, NH3, NO, NO2, PH3, SO2, amines, odorants, COCl2, ozone and different organic vapors.

  • Drager x am 5600 multi gas meter with electrochemical and infrared gas sensors
  • Rugged design with ultra-compact size
  • Infrared gas detection technology
  • Hydrogen detection with electrochemical sensor
  • Opportunity to connect an external sampling pump
  • ATEX approved for use in zone 0
  • Additional information
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Multi gas meter X-am 5600

Ultra-compact and lightweight, the X-am 5600 multi gas meter has been especially designed to detect the following gases: O2, Cl2, CO, CO2, H2, H2S, HCN, NH3, NO, NO2, PH3, SO2, amines, odorants, COCl2, ozone and different organic vapors.

Drager x am 5600 multi gas meter with electrochemical and infrared gas sensors
  • Rugged design with ultra-compact size
  • Infrared gas detection technology
  • Hydrogen detection with electrochemical sensor
  • Opportunity to connect an external sampling pump
  • ATEX approved for use in zone 0
Additional information

The X-am 5600 portable multi gas detector is a personal protective equipment that has been especially designed to simultaneously detect from 1 up to 6 gases. Thanks to an innovative combination of infrared and electrochemical gas detection sensors, this portable gas detector can quickly, reliably and accurately detect the following gases: O2, Cl2, CO, CO2, H2, H2S, HCN, NH3, NO, NO2, PH3, SO2, amines, Odorants, COCl2, Ozone and different organic vapors.

The X-am 5600 has been designed to combine performance and discretion. This way, thanks to a compact size and a light weight, it won’t annoy its user. Easy to wear and to use, this portable multi gas meter is robust and can be used in hostile industrial environments. IP67 certified, it is resistant to water and dust. Moreover, thanks to its rubber housing, this personal gas monitor features an increased resistance to impacts and shocks for use in difficult conditions. As it also features a crocodile clip, it can be easily be attached to a pocket or a collar in order to monitor concentrations inhaled by the operator.

The X-am 5600 multi gas meter can monitor up to 6 gases thanks to electrochemical and infrared sensors. Because of their huge durability and resistance, infrared gas detection sensors can operate for up to 8 years and only require one annual calibration. Thus reducing maintenance and operating costs. This way, this detector can be equipped with an IR Ex sensor to monitor combustible gases (with a measuring range between 0 and 100% of the volume for methane, ethylene and propane for example), an IR CO2 sensor to detect carbon dioxide or an electrochemical sensor for hydrogen detection.

When equipped with an external sampling pump – available in option – the X-am 5600 can draw remote samples up to 30 meters away in order to get hazardous gas concentrations before any intervention. This system is very convenient before any entry in confined spaces like tanks or pits.

Lastly, this lightweight and compact detector is ATEX approved for use in zone 0 - continuous explosive atmosphere.

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The BM25 area gas monitor can detect from 1 up to 5 gases. This powerful gas detector is not a personal protective equipment but a collective area protective equipment.

  • Portable gas detector BM25
  • Weekly or monthly rental
  • ATEX multigas area monitor
  • Detection of AsH3, CO2, COCl2, combustible gases, H2, HCN, HCl, HF, H2S, NO, NO2, O2, PH3, SO2, VOC
  • Configurable according to your needs
  • Provided with every accessory
  • Additional information
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Area gas monitor – BM25

The BM25 area gas monitor can detect from 1 up to 5 gases. This powerful gas detector is not a personal protective equipment but a collective area protective equipment.

Portable gas detector BM25
  • Weekly or monthly rental
  • ATEX multigas area monitor
  • Detection of AsH3, CO2, COCl2, combustible gases, H2, HCN, HCl, HF, H2S, NO, NO2, O2, PH3, SO2, VOC
  • Configurable according to your needs
  • Provided with every accessory
Additional information

As its name implies, the BM25 area gas monitor is designed to monitor a specific zone were people are working. In its 4 gas version, the BM25 features an autonomy of around 100 hours and is fully charged within 4 hours.

According to the most specific needs, many configurations are available. The BM25 area gas monitor indeed features a large range of sensors to detect up to 5 gases like arsine (AsH3), carbon dioxide (CO2), phosgene (COCl2), the combustible gases, hydrogene (H2), hydrogene cyanide (HCN), hydrogene chloride (HCl), hydrogene fluoride (HF), hydrogen sulfide (H2S), nitric oxide (NO), nitrogen dioxide (NO2), oxygene (O2), phosphine (PH3), sulfur dioxide (SO2) and the volatile organic compounds (VOC).

In order to alert every worker evolving in the monitored area of any gas hazard, the BM25 area gas monitor features a two-way 103 dB audible alarm at one meter. A high visibility red light is added to the safety unit to evolve safely in noisy and/or dark areas.

The BM25 is equipped with a backlit graphic LCD display for better reading of values. The "FLIP-FLAP" function (display reversal depending on the area monitor position) is also integrated. As it is made with robust material, the BM25 suits in the harshest environments and is compiant with the IP66 ingress protection level. Is also meets major current EU ATEX standards.

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X-zone 5500 area gas monitor that can control up to 6 gases at the same time. Compatible with X-am 5100, 5000 & 5600 portable gas detectors. Up to 25 of these devices can easily be interconnected wirelessly to create a complete portable gas detection system. High autonomy of 120 hours, 14 hours charging time.

For CO, H2S, Ex, CO2, CL2, COCl2, H2, H2O2, HBr, HCl, HF, HNO3, HCN, N2H4, NH3, NO, NO2, O2, O3, OV, OV-A, PH3, POCl3, SO2, Amines on site detection.

  • Drager X-zone area gas monitor for worksite safety
  • Area gas detector simultaneously monitoring up to 6 gases
  • Audible alarm:  360° 120 dB – at 30 cm
  • Autonomy: 120h – charge time 14 h – induction (no wire) or universal charger
  • ATEX, IECEx, CASE/US compliant – Ingress protection IP67
  • Operating conditions: max. temperature +50 °C, 700 to 1 300 hPa pressure, 10 to 95 % humidity

 

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Area gas monitor – X-zone 5500

X-zone 5500 area gas monitor that can control up to 6 gases at the same time. Compatible with X-am 5100, 5000 & 5600 portable gas detectors. Up to 25 of these devices can easily be interconnected wirelessly to create a complete portable gas detection system. High autonomy of 120 hours, 14 hours charging time.

For CO, H2S, Ex, CO2, CL2, COCl2, H2, H2O2, HBr, HCl, HF, HNO3, HCN, N2H4, NH3, NO, NO2, O2, O3, OV, OV-A, PH3, POCl3, SO2, Amines on site detection.

Drager X-zone area gas monitor for worksite safety
  • Area gas detector simultaneously monitoring up to 6 gases
  • Audible alarm:  360° 120 dB – at 30 cm
  • Autonomy: 120h – charge time 14 h – induction (no wire) or universal charger
  • ATEX, IECEx, CASE/US compliant – Ingress protection IP67
  • Operating conditions: max. temperature +50 °C, 700 to 1 300 hPa pressure, 10 to 95 % humidity

 

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SO2 respiratory protection (Sulfure dioxide)

As sulfur dioxide is irritating to the eyes, it is recommended to use an E filter with a full-face mask for short interventions or, for long working periods, a full PAPR. A self-contained breathing apparatus (SCBA) is required if concentrations exceed 60 times the OEL.

The X-plore 5500 is a full facepiece respirator mask especially designed to provide its users breathing and visual protection against gases and particles.

  • X-plore 5500 gas mask by Drager: dual filter respirator
  • Airtight and secured design
  • Comfortable and easy to use
  • 180° large field of view
  • Efficient ventilation system
  • Compatible with the X-plore filters range
  • Additional information
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Full facepiece respirator X-plore 5500

The X-plore 5500 is a full facepiece respirator mask especially designed to provide its users breathing and visual protection against gases and particles.

X-plore 5500 gas mask by Drager: dual filter respirator
  • Airtight and secured design
  • Comfortable and easy to use
  • 180° large field of view
  • Efficient ventilation system
  • Compatible with the X-plore filters range
Additional information

Especially designed to provide an optimal protection in presence of gas or particles, the X-plore 5500 full facepiece respirator is widely used in many industrial applications (particularly in the chemical and steel industries) but also shipyard industry…

Equipped with a visor made of polycarbonate or triplex glass, the X-plore 5500 mask provides its wearer a large field of vision without distortion. The polycarbonate panoramic visor features a frame made of plastics and is highly resistant to shocks while the glass visor – with stainless steel frame – is treated against scratches and chemical products.

The mask itself features a specific dual seal with triple sealing edges to offer optimal tightness and protection. The body of the dual filter gas mask is made of ultra-resistant EPDM elastomer that fits any morphology and face shape. This way, the mask remains comfortable to wear. Moreover, thanks to its unique standard size, this full facepiece respirator is easy to transport and to store.

As it is a respiratory protective full face mask, steam can appear on the visor. In order to resolve this matter, the le X-plore 5500 is equipped with a special integrated ventilation system. This system has been engineered to protect the visor against any risk of condensation in order to ensure clear view in any situation.

Thanks to its comfortable 5-point flanged harness, the X-plore 550 can be worn and removed easily and quickly. Moreover, its connecting straps have been especially designed to avoid pressure on the head or the face of the user.

The X-plore 5500 dual filter gas mask features two connectors located on both sides to connect two air filtering cartridges. Furthermore, as the filters are positioned laterally and backwards, the field of vision of the user remains perfectly unobstructed. This breathing protection equipment is fully compatible with the X-plore series bayonet filters. These filters are especially designed to provide optimal protection against harmful gases, vapors and particles. Thanks to their bayonet connection system, they can be easily and quickly installed in order to operate as soon as possible.

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The X-plore 6300 is a respiratory protective full face respirator. Cost effective, this is an ideal solution for industrial applications, providing users comfort and air purifying performance.

  • The X-plore 6300 full face respirator, a single filter gas mask by Dräger
  • Universal size
  • Large field of view
  • Hypoalergenic material
  • Integrated ventilation system
  • Compatible with X-plore Rd 40 filter series
  • Additional information
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Full face respirator X-plore 6300

The X-plore 6300 is a respiratory protective full face respirator. Cost effective, this is an ideal solution for industrial applications, providing users comfort and air purifying performance.

The X-plore 6300 full face respirator, a single filter gas mask by Dräger
  • Universal size
  • Large field of view
  • Hypoalergenic material
  • Integrated ventilation system
  • Compatible with X-plore Rd 40 filter series
Additional information

The X-plore 6300 single filter gas mask is a respiratory protective device that has been especially designed for use in industrial environments.

Made of ultra-resistant and hypoalergenic EPDM elastomer, this full face respirator features a dual airtight seal for maximal reliability, comfort and safety. Cost-effective, this mask fits perfectly in any morphology and any face shape witout annoying its wearer.

The large facepiece visor is made of PMMA plexiglass (polymethyl methacrylate) and features a plastic frame to offer a large 180° field of view without distorsion and an outstanding panoramic view. This visor is also especially treated to be scratch resistant. Moreover, the X-plore 6300 mask is equipped with an integrated ventilation system in order to avoid presence of steam and condensation inside the full facepiece.

Thanks to its universal size and its 5-point specific harness, this respirator is very easy to don and to remove. The special design of its donning straps avoids any pressure on the head or the face of the user. This way, the X-plore 6300 can be worn during long periods of time without annoying the user. taille. Furthermore, thanks to this standard size and its low weight – approximately 500 grams – the X-plore 6300 single cartridge respirator is easier to carry and to store.

Lastly, this respiratory protective full face respirator is fully compatible with X-plore Rd 40 series filters. These filters feature universal 40 mm connector threads in compliance with the EN 148-1 European standard. These filters are especially designed to purify air from any contaminant that could be harmful for the user. This filter range provides reliable and efficient protection in any situation against toxic substances – gas or particles. Thus, the X-plore 6300 single filter gas mask can be equipped with a particle filter, a gas filter or a combined filter to respond to any demanding application.

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The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

  • The powered air purifying respirator Duraflow PAPR
  • Compatibility with RD DIN 40 universal filter cartridges
  • Rechargeable battery – 2 available version: 8 or 16 hours runtime
  • Automatic airflow regulation (160l/min)
  • Visual alarms, notifications and display
  • CEN1294 & CE0086 certified, IP55/IP67
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Powered air purifying respirator Duraflow

The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

The powered air purifying respirator Duraflow PAPR
  • Compatibility with RD DIN 40 universal filter cartridges
  • Rechargeable battery – 2 available version: 8 or 16 hours runtime
  • Automatic airflow regulation (160l/min)
  • Visual alarms, notifications and display
  • CEN1294 & CE0086 certified, IP55/IP67
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The X-plore 8000 is a powered air purifying respirator especially designed to provide a reliable and convenient respiratory protection solution. Fully modular, this system can operate for at least 4 hours with only one charge for safe applications.

  • The X-plore 8000 PAPR respirator system by Dräger enhanced positive pressure respirator
  • Rugged design for daily use
  • Modular and versatile
  • Comfortable and secured with rubber protectors
  • Easy to disassemble for easy servicing
  • Compatible with a large range of accessories
  • Additional information
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PAPR respirator system X-plore 8000

The X-plore 8000 is a powered air purifying respirator especially designed to provide a reliable and convenient respiratory protection solution. Fully modular, this system can operate for at least 4 hours with only one charge for safe applications.

The X-plore 8000 PAPR respirator system by Dräger enhanced positive pressure respirator
  • Rugged design for daily use
  • Modular and versatile
  • Comfortable and secured with rubber protectors
  • Easy to disassemble for easy servicing
  • Compatible with a large range of accessories
Additional information

The X-plore 800 PAPR respirator system has been especially designed to enable its user to operate safely in toxic environments. Thanks to its robust designIP65 certified against dust and water jets – this positive pressure air purifying respiratory protective device is particularly well-suited for use in potentially explosive atmospheres (ATEX).

The X-plore 8000 PAPR respirator system is composed by a rugged casing that can includes a whole range of specific PAPR filters in order to meet requirements of almost any industrial application. A breathing hose available in three different versions and a face piece (PAPR mask or hood) complete this system. The device can be worn with a special belt and can be equipped with a standard battery, which provides at least 4 hours run time, or a high capacity battery for an extended run time of at least 8 hours. The belt ensures optimal comfort of use and perfect weight balance. This positive pressure respirator has been especially engineered to fit perfectly the user without disturbance.

Available in standard version as well as ATEX certified fireproof version, the X-plore 8000 respirator features protected air inlets which ensure that no dust, water or even sparks come into contact with filters.

Thanks to its enhanced technology, the PAPR respirator system automatically detects the connected face piece in order to adjust the injected airflow. Integrated temperature and pressure sensors in the housing also enable the automatic adjustment of the airflow. A wide range of face pieces – PAPR hoods & masks - is available to meet even the most demanding requirements from any application. This way, the housing of the X-plore 8000 can be connected to half-hoods, full hoods, protective visors, helmets, half-masks, panoramic masks or even helmets specifically dedicated to welding activities.

The X-plore 8000 PAPR respirator also features a smart alarm system which purpose is to alert user in case of problems. This way, if the air flow is not sufficient or in case of low battery status, visual (operational display), acoustic (80 dBA at 1 meter) and vibrating alarms activate to alert user of the failure. Moreover, an integrated optical sensor avoids any use without a filter for an optimal safety of use.

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