The Best Argon Gas Detector (for Leak Detection and Purity)

Argon Gas Analyzer -

The Best Argon Gas Detector (for Leak Detection and Purity)

Argon gas is one of the noble gases. It is an inert gas, meaning it is unreactive, that has many applications due to this property including protecting the weld area and detecting the location of gas leaks. Argon gas detectors are essential to protect people, such as welders, from inhaling a dangerous level of the gas. They are also necessary to identify gas leaks when argon gas is used as a tracer gas. Understanding argon gas and its detection is critical to purchasing the best argon gas detector for your uses.



  • Inert and nonflammable gas
  • Argon is increasing in popularity due to the limited supply of helium
  • Argon gas detectors are used to detect argon gas in a welding field or in a gas leak. Other applications include producing metals, preventing erosion, and detecting gas leaks in pressure, vacuum systems.
  • Argon gas detectors are expensive
  • Argon is a difficult gas to measure
  • Argon may not be used as a tracer gas in all gas leak testing performed
  • Argon gas analyzers are a specialized product with little literature or tutorials


What is the Best Argon Gas Detector?

Some suitable argon gas detectors are available on the market, although they can be difficult to find. Several examples of devices may include the following:

What is an Argon Gas Detector?

An argon gas detector is a piece of detection equipment used to detect the presence of argon gas. Due to its primary use in leak detection, it is mostly available in portable or handheld forms. These forms allow for easy movement of the device which is critical for effective detection of gas leaks.

What is Argon Gas?

Argon gas is colorless and odorless. It does not react with other chemical compounds, meaning it is inert. It has many uses including the following:

  • Producing titanium
  • Protecting the weld area
  • Preventing oxygen from eroding lightbulb filaments
  • Detecting leaks

Is Argon Gas Hazardous?

Argon gas can be hazardous at times. In general, argon gas can irritate the skin and eyes if inhaled or encountered.

If it is inhaled in large concentrations, it has the potential to act as an asphyxiant. This can be life-threatening.

How is Argon Gas Used in Leak Detection?

In leak detection, argon gas may be used as a tracer gas. This means that it is introduced to areas where a leak is suspected to be so that a mass spectrometer can measure the leak and alert the user as to the location and size of the leak. 

Argon gas can be used in three types of leak detection:

  • Vacuum detection
  • Pressure detection
  • Vacuum-pressure detection

Who Uses Argon Gas Detectors?

Many individuals may find a use for argon gas detectors. The average homeowner likely does not need to purchase an argon gas detector, but some of the following individuals may want to consider it.


Welders may benefit from having a personal argon gas detector on their person while they are working. While using argon to protect the weld area, they may be unknowingly exposed to higher concentrations of argon gas that can cause bodily harm. A detector can alert welders when the concentration grows too high so they can respond accordingly without risking harm.

Material Production Workers

If argon gas is to be used in the production of certain materials, such as titanium, it could be useful for workers to have an argon gas detector readily available. This will help to protect them from potential harm as they are exposed to argon gas.

Gas Leak Detection Specialists

Gas leak detection specialists require an argon gas detector to be successful. If they are using argon gas as the tracer gas, having a detector capable of measuring the concentration of argon is imperative to identifying the location and size of the leak. 

    Argon has long been utilized in technological applications, such as inert-gas shielded welding, metallurgy for backing melts, science and medicine as a carrier gas for gas chromatography, and the lamp industry as a filling gas.

    Why is Argon Used in Leak Detection?

    Argon gas is used as a tracer gas in leak detection due to:

    • Its lack of interference with other argon molecules due to argon's rarity in the atmosphere
    • Its properties that make it non-explosive, non-toxic, and unreactive
    • Its ability to not contaminate the detector used

      Is Argon used in Fire Extinguishers?

      Yes it is. 

      Argon is used in argon fire extinguishers, and argon leak detectors are needed to determined if these fire extinguishers are leaking.

      Argon is a non-combustible gas that can be recovered from the atmosphere. It is recognized as an environmentally beneficial extinguishing agent because it is fully natural. It's colorless, odorless, tasteless, and chemically neutral, so it's safe to use in crowded situations.

      What Are Some Common Methods for Argon Leak Testing?

      Argon leak testing is typically accomplished through one of three methods: using vacuum techniques, using pressure techniques, or using vacuum-pressure techniques.


      In this method, the leak detector is connected to a vacuum pumping system while a pump evacuates the object of interest. A high-pressure vacuum is used to detect a leak using introduced gas.


      The pressure technique requires the object of interest to contain gas at a higher pressure than that which is present in the atmosphere. Then, a leak detector can be introduced. This technique can be useful for large objects such as tanks.


      Using this technique, the object of interest has gas introduced to it to give it a certain pressure. Then, it is placed in an evacuation chamber where the detector is connected. This is common in high production testing. 

      Is Argon Flammable?

      Argon is considered non-flammable. It is still important to note that containers of argon may still explode in the event of a fire.

      Are Argon Gas Detectors Accurate?


      Argon gas detectors should be accurate so long as they are purchased from a reputable manufacturer. Further, to ensure accuracy, make sure the device has been calibrated to NIST traceable gas standards.

      What Kind of Leaks Can Argon Gas Detect?

      Argon can be used to detect gas leaks. When argon is used to detect gas leaks, it is used as a tracer gas introduced to a pipe, tank, or another object that has a suspected leak. Then, one of the gas leak detection techniques can be used to discern the location of the gas leak.

      Where Should an Argon Gas Detector Be Located?

      In most cases, an argon gas detector is location dependant. The user typically probes at different locations with a probe that draws the air to the sensor. In some cases, the sensor can be at the end of a gooseneck and the sensor can directly detect the argon gas via natural diffusion.

      How Long Do Argon Gas Detectors Last?

      Argon gas detectors employ thermal conductivity sensors (thermistors) that are solid state electronic components which last well over 5 years of operation.

      What is Argon Gas Used For?

      Argon gas is used for a number of functions. As mentioned, it can be used to protect the weld area. More specifically, argon gas is used for this purpose because it creates an inert atmosphere for the welding to take place where reactions cannot take place. This is important for preventing the oxidation of metals.

      Argon gas is also frequently used in gas leak detection. Here, it may be used as a tracer gas since it is not abundant in the atmosphere.

      How Do You Get Argon Gas?

      Since argon gas is found in the Earth's atmosphere, it is typically acquired commercially by distilling liquid air. Argon gas supply can also be purchased by Forensics Detectors.

      Is Argon Gas Better Than Helium Gas for Leak Testing?

      Argon and helium gas are both useful for gas leak detection-- however, they may be used in different instances.

      Helium gas is more commonly used, however due to the limited helium supply, argon gas is increasing in popularity.

      Final Words

      • Argon gas is an inert gas that can pose some dangers to humans if it is improperly inhaled
      • Argon gas has many applications, including welding and gas leak detection
      • Gas leak detection may use one of three different techniques as well as consider several different tracer gases
      • Argon gas detectors should be checked frequently to ensure they are well-powered and functioning properly
      • Argon use is increasing due to the limited supply of helium, both of which are inert gases.

      About the Author

      Dr. Koz is the President of FORENSICS DETECTORS, where the company operates from the scenic Palos Verdes Peninsula in Los Angeles, California. He is a subject matter expert on gas sensor technology, gas detectors, gas meters, and gas analyzers. He has been designing, building, manufacturing, and testing toxic gas detection systems for over 20 years.

      gas detector expert

      Every day is a blessing for Dr. Koz. He loves to help customers solve their unique problems. Dr. Koz also loves spending time with his wife and his three children going to the beach, grilling burgers, and having a cold beer. 

      Read more about Forensics Detectors here.

      Phone: +1 424-341-3886

      Leave a comment

      Please note, comments must be approved before they are published