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What is a Hydrogen Sulfide (H2S) Gas Detector?

Posted by on Feb 14, 2020 in Gas Detectors, Hydrogen Sulfide | 0 comments

If you work with crude petroleum, natural gas, or bacterial decomposition, chances are you encounter hydrogen sulfide (H2S) on a regular basis. Hydrogen sulfide is a colorless, highly toxic gas that can cause a myriad of dangerous health symptoms. If proper detection systems aren’t in place, the safety of your workers and equipment could be at risk.

A hydrogen sulfide (H2S) gas detector is often part of a monitoring system designed to detect high levels of hydrogen sulfide in ambient air. Hydrogen sulfide detectors can also be used in sample draw monitors to remotely measure H2S gas in confined spaces, and with the proper equipment can be used to monitor the level of H2S in streams of natural gas. Overall, the hydrogen sulfide (H2S) gas monitor is an efficient way to monitor the gas concentrations in your vicinity.

How Does an H2S Detector Work?

Hydrogen sulfide gas detectors primarily use electrochemical sensors to detect and measure parts-per-billion (‘ppb’) and parts-per-million (“ppm”) levels of H2S gas. These sensors depend on a highly reliable electrochemical reaction that occurs when H2S gas combines with specific materials used in the sensor. This reaction creates a tiny electrical current that is amplified and measured by the electronics in the gas detector. These industrial quality H2S detectors can help make sure the  H2S concentration level stays below the limit required by The Occupational Safety and Health Administration (OSHA). 

What is a Hydrogen Sulfide (H2S) Gas Detector, GDS Corp, Houston, TX

Depending on the environment, the Permissible Exposure Limits (PEL) for H2S gas are:

  • General Industry Ceiling Limit: 20 ppm
  • General Industry Peak Limit: 50 ppm (up to 10 minutes if no other exposure during shift)
  • Construction 8-hour Limit: 10 ppm
  • Shipyard 8-hour limit: 10 ppm

Types of Hydrogen Sulfide Detectors

GDS Corp offers a number of gas detectors that can be programmed to monitor hydrogen sulfide exclusively, such as:


  • GASMAX CX Gas Monitor – Single or dual channel gas monitor certified for hazardous areas where gas readings need to be transmitted in real-time
  • GASMAX EC Gas Monitor – Loop-powered gas detector for all toxic gases; certified for Explosion Proof or Intrinsically Safe installations
  • GDS-58NXP – Single or dual channel sample draw gas monitor designed to measure gas samples pulled from remote locations up to 100 feet away
  • GDS-49 Gas Sensor  – Loop-powered stand-alone gas sensor transmitter with replaceable sensors for any toxic gas
  • GDS-68XP or GDS-68SXP Process Monitor – Process gas monitor used to measure hydrogen sulfide or mercaptans in low oxygen streams such as gas pipelines.

Pro Tip: In addition to your health, don’t neglect to protect your equipment from hydrogen sulfide’s flammable nature in very high concentrations. Install a flame detector to ward off any potential fires.

Reliable Gas Detection Systems

Does your waste facility or manufacturing process have a gas detection system installed? While hydrogen sulfide is typically characterized by its rotten egg smell, you can’t rely on your senses alone since high levels of H2S cannot be detected by smell. Don’t ignore the hazardous effects of H2S in your vicinity; install an H2S gas detector you and your team can rely on.

Not sure which gas detector to choose? Connect with our gas detection professionals to find the best solution for your facility.

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The Use Of Portable Gas Detectors In Confined Space Applications

Posted by on May 22, 2018 in Gas Detectors | 0 comments

When it comes to industrial safety programs, companies in virtually all industries pay close attention to monitoring gas levels in confined spaces. Since gas levels can reach dangerous levels in these areas in only a matter of minutes, it’s crucial for maintenance technicians and other employees who are in these areas to have access to data and equipment that can allow them to evacuate an area when danger arises. Because of this, companies now look to invest in open path gas detection systems, which utilize the latest electronics and other state-of-the-art technology to provide accurate and reliable gas level readings in confined spaces. To gain a greater understanding of how portable gas detectors are used in confined spaces, here are some important aspects to consider.

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Gas Detector’s Working Principle & Instrumentation Tools

Posted by on May 14, 2018 in Gas Detection Equipments | 0 comments

In virtually all industrial facilities today, advanced technology has led to the installation of equipment costing millions of dollars. As a result, there is now a much greater emphasis on industrial safety programs, since companies have invested heavily in their facilities and the equipment they contain. To ensure fires or explosions do not occur, it’s crucial to choose flammable gas detection systems that possess the most up-to-date electronics and other technology to keep a facility as safe as possible. However, since the electronics and instrumentation in these systems are being constantly updated, it’s extremely important to make the right choice when trying to prevent flammable gases from leading to fires or explosions. If you are in the process of selecting flammable gas sensors for your facility, here are some general guidelines regarding their instrumentation.

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How Do Gas Detectors Work In Gas Industry?

Posted by on May 7, 2018 in Gas Detectors | 0 comments

With industrial facilities varying in their layout, size, and function, it’s no wonder that deciding on the best gas detection systems can be a difficult decision. From wastewater treatment facilities to automotive plants and oil refineries, having the capability to quickly detect toxic or combustible gases is a must in order to keep employees and facilities as safe as possible. With a variety of technology now being used in these detection systems, there are now many different options for companies in need of accurate and reliable gas detection. To learn how gas detectors work in the gas industry, here are some key aspects of these systems.

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Importance Of Hydrogen Sulfide Gas Detectors At Drilling And Completions

Posted by on Dec 19, 2016 in Hydrogen Sulfide | 0 comments

When it comes to monitoring hydrogen sulfide, it’s imperative that it be done in the most efficient manner possible. Due to it’s lack of color, the smell of rotten eggs is the only indication the gas is present in the workplace. At drilling and completions, having the ability to detect hydrogen sulfide can ensure workers will have an added level of protection on the job. To make sure workers in confined spaces or other areas involved in drilling and completions are kept as safe as possible, certain steps must be taken along the way.

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