Oxygen Leak Detector

Data Logging: Click Here
User Manual:
 Click Here


⚛️ ACCURATE: Electrochemical sensor.
💪 LEAKS: 3-inch Inspection Probe.
🌈 DISPLAY: Color LCD with data logging.
🌋 USES: Inspectors, technicians, R&D.
🕵️ TRUSTWORTHY: 1-year warranty.


O2 Range: 0.00- 30.00%
O2 Resolution: 0.01% (100ppm)
Error: ≤ ± 5%
Response: ≤ 20 sec
Working Temp: 14F - 122F, <95%RH
Battery: DC 3.7V Li-on battery, 3200 mAh
Gas sensor life: 2-3 years
Explosion-proof grade: Ex ib IIB T4 Gb
Protection grade: IP65
Weight: 14 oz
Dimensions: 5.1 in × 2.6 in x 1.2 in
Charge time: 3 hours
Operating time: > 10 hours
Pump rate: 0.1 - 0.3 LPM (100 - 300 cc/min)
Calibration: USA NIST traceable calibration

Whats in the Box?

  • Oxygen Leak Detector
  • 3-inch Probe
  • Electrochemical O2 Sensor
  • USB Charging Cable and Charger
  • User Manual
  • USA Technical Support
  • Stainless Steel Belt Clip
  • Carry Case
  • USA NIST Calibration Document
oxygen leak detector

Best Oxygen Leak Detector

The Oxygen Leak Detector with a built-in pump is an exceptional leak detector. It offers a fast response time with point probe sampling. It can be used to track oxygen leaks in packaging, and equipment, or use oxygen as a tracer gas with nitrogen flushing. This advanced oxygen leak analyzer comes equipped with a 32-bit microprocessor, color LCD, and graphing capability, making it one of the most advanced on the market. Additionally, the detector is USA NIST traceable and calibrated in Los Angeles, CA.

oxygen leak detector

Oxygen Leak Detector Accessories?

Applications for Oxygen Leak Detectors

Oxygen leak detectors are used by various industries where the presence of oxygen is critical and leaks can be dangerous. Some of the industries that use oxygen leak detectors include:

  • Aerospace industry: Oxygen leak detectors are used in spacecraft, aircraft, and other aerospace equipment to detect any leaks that could cause a fire or explosion.
  • Welding industry: Use oxygen detectors to ensure no oxygen is leaking in their inert welding environment. Used for TIG or MIG welding to confirm low oxygen content in inert environments. The device accurately monitors oxygen levels while using inert gas to purge stainless steel, titanium, and other reactive metals.
  • Healthcare industry: Oxygen leak detectors are used in hospitals and other healthcare facilities to detect any leaks in oxygen delivery systems that could put patients at risk.
  • Manufacturing industry: Oxygen leak detectors are used in manufacturing plants that use oxygen in their production processes to ensure the safety of workers and prevent accidents.
  • Mining industry: Oxygen leak detectors are used in mines to detect any leaks in the oxygen supply systems used by miners to breathe.
  • Modified Atmosphere Packaging: Used it confirm oxygen leakage in food headspace analysis. In this application needle probes are used to obtain the air sample and a specific setup for headspace oxygen analysis is required.
oxygen leak detector

How to Test for a Oxygen Gas Leak?

To test for a oxygen gas leak, take the following steps:

  • Use an Oxygen Leak Detector: Acquire an oxygen leak detector and use it at suspected oxygen locations. If you are using a nitrogen flush to reduce oxygen (depletion), take your time to find any oxygen leaks.
  • Monitor the oxygen %vol Readings: Allow the oxygen leak detector sufficient time to sample suspected leak areas and provide accurate readings. Monitor the detector's display or indicators for any changes in oxygen levels. Don't forget normal air has 20.9% of air. Most typically you will be looking for higher or lower values than this.
  • Leak fixing: If a leak has been found. Take note of its location and tag the location. Address the leakage with an appropriate engineer or technician.

What Does A Oxygen Gas Leak Smell Like?

Oxygen itself is an odorless and colorless gas, so it does not have a smell. This means that an oxygen gas leak cannot be detected by smell alone.

However, if the oxygen is being stored or used in a system that also contains other gases or chemicals, such as nitrogen or argon, a leak in that system may produce a smell. For example, if the oxygen is being used in a welding process, a leak in the system could produce a smell of burning or hot metal.

It's important to note that even if an oxygen leak does not produce a smell, it can still be dangerous. Oxygen leaks can increase the risk of fire or explosion, and can also displace the air in an enclosed space, leading to asphyxiation. Therefore, it's important to use an oxygen leak detector to ensure the safety of the environment and those working in it.

Oxygen Leak Testing for Welding

When performing TIG welding, it is important to monitor the oxygen concentration in the welding environment. This is because TIG welding uses an inert gas, typically argon, to shield the weld from the surrounding air. If the oxygen concentration in the welding environment is too high, it can react with the shielding gas and cause defects in the weld, such as porosity or oxidation.

Therefore, using an oxygen monitor during TIG welding is necessary to ensure that the oxygen concentration in the welding environment is within safe levels. The oxygen monitor can alert the welder if the oxygen concentration exceeds a certain level, allowing them to take appropriate action, such as adjusting the shielding gas flow or increasing ventilation in the area. This helps to ensure the quality and integrity of the weld, reducing the risk of defects and improving overall product quality.

oxygen leak detector

How Long Does the Oxygen Gas Sensor Last?

The lifespan of an oxygen electrochemical sensor is about 2 to 3 years. The sensor's lifespan is influenced by factors such as operating temperature, humidity, exposure to contaminants, and the frequency of calibration and maintenance.

How often should I test or calibrate my Oxygen Leak Detector?

It is best to bump test before using the Oxygen leak detector. Calibration should be performed every 6 to 12 months. Calibration can be done by the Forensics Detectors lab or can be performed by the customer following our calibration tutorials. Items required are:

Calibration T-piece & Tubing
Calibration Gas (N2)
Calibration Gas Regulator (C10)

gas calibration

How Does a Oxygen Leak Detector Work?

An oxygen leak detector works by sensing the presence of oxygen gas in the air and alerting the user when it is detected. An oxygen leak detector is a digital instrument with an electrochemical oxygen-sensing cell that produces an electrical signal proportional to the oxygen concentration. This signal is then processed by the detector's electronics. This allows the analyzer to display a quantitative representation of oxygen levels in %vol. The relationship between the voltage output and the O2 %vol reading is established through calibration, where a known concentration of O2 gas is used to determine the corresponding output voltage of the sensor. This calibration process ensures accurate and reliable measurements from the analyzer.

gas leak detector

How Should I Store my Oxygen Leak Detector?

To ensure maximum sensor life and accurate measurements upon operation, it is recommended to store the Oxygen Leak Detector in a moderate environment with a humidity level of 50%RH and a room temperature of approximately 70F. The unit should be kept in the hard waterproof case it was sold with for optimal storage conditions.

What is the Maintenance Schedule for my Oxygen Leak Detector?

To ensure safety we recommend the following schedule for your oxygen leak detector. For those working in dangerous confined spaces, we recommend bump testing daily. For R&D where accuracy is upmost important, we recommend calibration daily. In general however, the tests and schedules that are important to ensure, operation, accuracy, and safety include the:

  1. Bump Testing (weekly to monthly, sometimes even daily)
  2. Calibration Schedule (every 6 or 12 months)
  3. Replacement Schedule (2-3 year sensor replacement)


  • An oxygen leak detector is a device that detects the presence of oxygen leaks in a system or environment.
  • It is used in industries where the presence of oxygen is critical and leaks can be dangerous, such as aerospace, healthcare, and manufacturing.
  • Oxygen leak detectors are often equipped with audible and visual alarms to alert the user of a leak.
  • Oxygen leak detectors are essential for ensuring the safety of workers and preventing accidents in environments where oxygen is used or stored.
  • Regular maintenance and calibration of oxygen leak detectors is important to ensure their accuracy and reliability.


This article was written by me, Dr. Koz. I am the President of Forensics Detectors located in California, USA. I am a subject matter expert on gas sensor technology, gas detectors, gas meters, and gas analyzers. I have been designing, building, manufacturing, and testing toxic gas detection systems for over 20 years. I love building Gas Leak Detectors and practicing Brazilian Jiu Jitsu.

Email:  drkoz@gasleakdetectors.com

dr Koz