Nitrogen 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

In the Box?

  • Nitrogen Leak Detector
  • 3-inch Probe
  • Electrochemical O2 Sensor (N2)
  • USB Charging Cable and Charger
  • User Manual
  • USA Technical Support
  • Stainless Steel Belt Clip
  • Carry Case
  • USA NIST Calibration Document
oxygen leak detector

Best Nitrogen Leak Detector

To detect leaks in nitrogen, the most effective way to do it is to actually use an Oxygen Analyzer. The FORENSICS nitrogen analyzer is a great option for detecting displaced oxygen due to nitrogen. This analyzer, which is actually an oxygen analyzer, is perfect for various applications such as checking nitrogen purge systems, nitrogen containment, nitrogen in a pressurized flush situation, pipe purging, N2 leak analysis, and more. The oxygen gas analyzer can measure the oxygen content in the weld chamber down to 0.01% (100 ppm) and is built on an industrial analyzer platform. It comes with a built-in pump that is easy to use, light, and portable. With a color screen, large digits, and on-screen real-time graphing, the detector is user-friendly and efficient. The advanced electrochemical oxygen sensor and the internal 32-bit microprocessor allow for user calibration, ON/OFF flow, and test control.

oxygen leak detector

Nitrogen Leak Detector Accessories?

Applications for Nitrogen Leak Detectors

Nitrogen leak detectors are used to detect leaks in nitrogen systems, contained systems, packaging or pressurized purge N2 systems. Technicians and engineers often use these analyzers for various applications such as checking nitrogen purge systems, nitrogen containment, nitrogen in a pressurized flush situation, pipe purging, N2 leak analysis, and more. Nitrogen leak detectors work by measuring the oxygen concentration in the area, as nitrogen displaces oxygen. This means that if there is a nitrogen leak, the oxygen concentration will be reduced, and the detector will be able to detect it. Nitrogen leak detectors are essential in industries where nitrogen is used, such as in the food industry, electronics manufacturing, and the medical industry. It is easier and more affordable to detector oxygen than directly detect nitrogen, that is the reason why its best to use an oxygen analyzer to detect nitrogen gas.

oxygen leak detector

How to Test for a Oxygen Gas Leak?

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

  • Use a Nitrogen Leak Detector: Acquire our nitrogen 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 nitrogen 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.

Nitrogen Gas Leak for Refrigeration?

A nitrogen leak detector for air conditioners is a specialized tool used to detect leaks in the refrigerant system of air conditioning units. Air conditioning units use refrigerants such as R-22 or R-410A to cool the air. These refrigerants are typically stored in a closed system, and any leaks in this system can lead to a loss of refrigerant, which can affect the efficiency of the air conditioner and potentially cause damage to the system.

A nitrogen leak detector for air conditioners works by pressurizing the refrigerant system with nitrogen gas and then using a sensor to detect any leaks in the system. The nitrogen gas is used to displace the refrigerant and any air in the system, making it easier to detect leaks.

Nitrogen leak detectors for air conditioners are commonly used by HVAC technicians during routine maintenance or repair work. Detecting and repairing leaks in the refrigerant system can help to improve the efficiency of the air conditioner, reduce energy consumption, and extend the lifespan of the system.

What Does A Nitrogen Gas Leak Smell Like?

Nitrogen gas is odorless, colorless, and tasteless, which means that it has no smell. This makes it difficult to detect nitrogen gas leaks using the sense of smell. Therefore, specialized equipment such as nitrogen leak detectors or oxygen analyzers are used to detect nitrogen leaks.

What are popular Nitrogen Leak Detector Applications?

Nitrogen leak detectors are used in various applications where nitrogen gas is used or stored. Some common applications of nitrogen leak detectors include:

1. Food industry: Nitrogen is commonly used in the food industry for packaging and storage of food products. Nitrogen leak detectors are used to ensure that there are no leaks in the nitrogen storage or packaging systems, which could affect the quality and safety of the food products.

2. Electronics manufacturing: Nitrogen is used in electronics manufacturing to prevent oxidation and contamination of sensitive electronic components. Nitrogen leak detectors are used to ensure that the nitrogen storage and dispensing systems are leak-free, preventing any contamination that could damage the electronic components.

3. Medical industry: Nitrogen is used in the medical industry for various applications such as cryogenics, anesthesia, and as a coolant. Nitrogen leak detectors are used to ensure that the nitrogen storage and dispensing systems are leak-free, preventing any potential harm to patients or healthcare workers.

4. Welding and metal fabrication: Nitrogen is used in welding and metal fabrication to prevent oxidation and improve the quality of the weld. Nitrogen leak detectors are used to ensure that the nitrogen storage and dispensing systems are leak-free, preventing any potential hazards to workers or damage to the equipment.

5. Chemical industry: Nitrogen is used in the chemical industry for various applications such as inerting, blanketing, and purging. Nitrogen leak detectors are used to ensure that the nitrogen storage and dispensing systems are leak-free, preventing any potential hazards to workers or damage to the equipment.

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 Nitrogen Leak Detector?

It is best to bump test before using the Nitrogen 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 Nitrogen Leak Detector Work?

A Nitrogen leak detector works by sensing the presence of oxygen gas in the air and alerting the user when it is detected. A Nitrogen 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 Nitrogen Leak Detector?

To ensure maximum sensor life and accurate measurements upon operation, it is recommended to store the Nitrogen 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.

Is Cryotherapy with Liquid Nitrogen Dangerous?

Yes, cryotherapy with Liquid Nitrogen may be dangerous if the nitrogen gas builds up.

Nitrogen is generally safe when used in cryotherapy, which is a medical treatment that involves exposing the body to extremely low temperatures for therapeutic purposes. During cryotherapy, nitrogen gas is often used to create the cold temperatures required for the treatment.

However, there are some potential risks associated with the use of nitrogen gas in cryotherapy. One of the main risks is the potential for nitrogen gas leaks, which can be dangerous if the gas is inhaled in large quantities. Nitrogen gas is odorless and colorless, which makes it difficult to detect without specialized equipment. For this reason, it's important to use nitrogen gas leak detectors (oxygen deficiency) and other safety measures when working with nitrogen gas in cryotherapy.

The risk is when the room has limited ventilation and does not allow for fresh air and oxygen to circulate, which may lead to reduced oxygen levels being displaced by the nitrogen used for the cryotherapy.

What is the Maintenance Schedule for my Nitrogen 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)


  • A nitrogen leak detector is a device that detects the presence of oxygen leaks in a system or environment to detect nitrogen leaks. Sometimes an actual oxygen leak detector is required or an inert gas detector such as argon or helium.
  • It is used by technicians and engineers in refrigeration, cryotherapy, packaging, the food industry, the medical industry, and welding.
  • Nitrogen leak detectors are often equipped with audible and visual alarms to alert the user of a leak.
  • Regular maintenance and calibration of nitrogen leak detectors are 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.


dr Koz