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Gas Detection

Get the rugged and reliable gas detection you need, backed by real-time monitoring software, flexible connectivity options, maintenance services, and a trusted team of gas detection experts.

Commonly monitored gases include:
Ammonia (NH3), Carbon dioxide (CO2), Carbon monoxide (CO), Chlorine (Cl2), Chlorine dioxide (ClO2), Hydrogen (H2), Hydrogen chloride (HCl), Hydrogen cyanide (HCN), Hydrogen sulfide (H2S), Methane (CH4), Nitric oxide (NO), Nitrogen dioxide (NO2), Oxygen (O2), Phosphine (PH3), and Sulfur dioxide (SO2)

Learn More about Gas Detection

If workers on your site risk exposure to one common gas, a single-gas monitor is ideal. However, if they could encounter multiple gases simultaneously, a multi-gas monitor is essential. In both cases, it‘s important that workers have personal gas detection equipment they can attach to their clothing within their breathing zone to alert them to the presence of a dangerous gas.

Personal multi-gas detectors are the ultimate safety companion for workers exposed to hazardous gases. With four-gas and five-gas monitors, you can detect toxic, combustible, and asphyxiant gases, and even customize your sensor settings to match your environment. No wonder these detectors are a top choice for safety-conscious professionals.

Gas Detection Glossary
Learn key terms and concepts associated with gas detection.
Gas Detection FAQs
Get answers to the most common gas detection questions.
Gas Detection Training
Access a variety of courses to meet your training needs.
Gas Detection Options by Gas Type
Know what gas you want to monitor? We'll help you find the right gas detector.
Gas Detection Management Tools

Monitors are pre-calibrated and come with calibration certificates, so you can get right to work.

Gas Detection Ownership Options
Learn whether you should rent gas detectors, choose Certified Pre-Owned (CPO) detectors, or buy new detectors that come with a subscription service.
Automate Gas Detection Maintenance


All gas detection programs, no matter how big or small, require maintenance to ensure the equipment is working properly. It's not always an easy job, especially when you consider the need for daily bump tests and monthly calibration. However, it‘s the only way you can be sure your gas monitors will detect the presence of gases and alert workers to the hazards they face.

You need a gas detection maintenance system that allows workers to bump test their monitors before every use and calibrate them as needed. The most common solution is a docking station that can charge the gas monitor, automatically bump test before each use, and calibrate on a schedule you set. These docking stations can also generate reports on worker exposure, alarm activity, and maintenance history, reducing the time you need to spend maintaining your gas detection program.

If you’d like to completely eliminate gas detector maintenance from your list of to-dos, a full-service gas detection maintenance program like iNet® Exchange is right for you. Industrial Scientific is the only gas detection manufacturer to offer a subscription service that simplifies all aspects of gas detection by automatically replacing monitors and eliminating maintenance pains.

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Step 1: Dock your monitor to bump test, calibrate,  upload data logs, and scan for performance issues.

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Step 2: We’ll tell you whether a monitor needs to be replaced—before it fails—and we’ll automatically send you a working monitor.

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Step 3: Receive a replacement monitor at your door, so you can forget about downtime.

Gas Detection Frequently Asked Questions

Is there a device that can detect gas?

Yes! If workers on your site risk exposure to gas hazards, they need to use gas detection equipment. 

Many companies use lightweight, wearable single-gas monitors to detect gas hazards. 

However, if workers could encounter multiple gases simultaneously, a multi-gas monitor is essential. These gas detection devices come equipped with four-gas and five-gas sensors, allowing you to detect toxic, combustible, and asphyxiant gases with ease. Plus, you can even customize your sensor settings to match your specific environment. 

No matter what hazards you need to detect, it‘s important that workers have personal gas detection equipment they can attach to their clothing within their breathing zone to detect gas.

How is gas detected?

Gas detectors operate by detecting the presence of gas in the air.

There are two very common sensor types used in gas detectors today:

Catalytic diffusion sensors use coils doped with catalysts to detect combustible gases. Placed in a circuit with a fixed voltage, the active element burns gas, causing an unbalance in the Wheatstone bridge circuit and triggering an alarm. 

Electrochemical sensors consist of a working electrode, counter electrode, and reference electrode enclosed in a sensor housing with a porous Teflon membrane. Gas diffuses through the membrane to the working electrode, causing an electrochemical reaction that produces an electric current proportional to the gas concentration. The current is detected, amplified, and displayed as the gas concentration in PPM or percent volume.

How do you detect a gas leak?

Industrial facilities have various types of leaks that need to be repaired, including gas leaks that can be very dangerous if left unchecked. For smaller-scale leaks, area monitors like the Radius BZ1 can be used to detect and monitor the source of the leak. For serious leaks, pairing gas detection equipment with dynamic plume modeling software like SAFER One allows you to quickly pinpoint the source of the leak and identify areas that will be affected within a two-hour window. This live data helps you make quick and accurate safety decisions during a gas leak.

How do I test the atmosphere for gas hazards?

A gas detection device is used to detect and measure the presence of gases in the air. These monitors are commonly used in a variety of industries to identify potentially hazardous gases, such as combustible or toxic gases, and to alert workers of their presence. Some gas detectors detect one gas, while others can detect multiple gases simultaneously.

Gas detectors with sampling pumps and a length of flexible tubing or a probe are ideal for drawing remote samples from confined spaces before entry. These samples are a critical step and must be recorded on a confined space entry permit. 

Regulatory agencies around the world have different minimum safe levels, so you should always check with your local agency.

What gases will a multi-gas monitor detect?

Our multi-gas meters can detect a wide range of toxic and combustible gases with flexible configurations to meet your needs.

We offer gas detection equipment to detect ammonia (NH3), carbon dioxide (CO2), carbon monoxide (CO), chlorine (Cl2), chlorine dioxide (ClO2), hydrogen (H2), hydrogen chloride (HCl), hydrogen cyanide (HCN), hydrogen sulfide (H2S), methane (CH4), nitric oxide (NO), nitrogen dioxide (NO2), oxygen (O2), phosphine (PH3), sulfur dioxide (SO2), and volatile organic compounds (VOCs).

Why should you use gas detection equipment?

Gas detectors are a key part of protecting worker safety, regulatory compliance, early detection of gas leaks, and improving situational awareness. Gas detection equipment provides a complete view of your work environment to help you detect leaks before they become dangerous or potentially catastrophic.

The information you gain from gas monitors is critical for ensuring worker safety because it helps you identify potential gas hazards and alert workers to prevent accidents and health risks associated with gas exposure. Using good quality gas detection equipment can also help your company avoid fines and legal liabilities associated with non-compliance.

Overall, using a gas monitor is a critical component of workplace safety and can help organizations ensure compliance with regulations, prevent accidents, and protect worker health and safety.

How do I know if my gas detection equipment is being used correctly?

Gas detection equipment only serves its purpose if people use it correctly. Without visibility into how people use gas detectors, you can’t know whether they serve their intended purpose. Beyond that baseline, you also need visibility into which alarms are going off, where, and for whom so you know when to intervene and stop unsafe behaviors. Identifying these trends is critical—but it can be nearly impossible with old-school, manual tools.

To get updates on critical alarm events, gas detection equipment usage patterns, and maintenance needs, you will need a cloud-connected docking station paired with gas detection management software. With these additional tools, you can customize your reports for what matters most to you and view them on a simple dashboard for immediate insight into critical safety patterns. By pulling alarm and usage history out of your gas detectors and into a dashboard, you can see how your people use gas detectors and whether they are making safe choices.

Gas Detection in Your Area

Gas detection rental pick-up service is available from our Pittsburgh, Houston, and Edmonton facilities.

If you can’t get to a rental center, in most cases, we can ship rental orders the same day your order is placed.

Request Gas Detection Rental Information

List of Rental Centers expand table collapse table

Pittsburgh, PA,
United States
1 412-788-4353
1 Life Way
Pittsburgh, Pennsylvania 15205-7500
Houston, TX,
United States
1 713-475-2000
2300 Pasadena Freeway, Suite 105
Pasadena, Texas 77506
Edmonton, AB,
1 877-467-4638 Ext 2053
167 Provincial Avenue, Unit #170
Sherwood Park, Alberta T8H 0M3
+55 19 38351254
Alameda Júpiter, 300 – Comercial Vitória Martini
CEP: 13347-627 - Indaiatuba, SP - Brasil
+33 (0)1 57 32 92 61
11D Rue Willy Brandt
CS 80097
62002 Arras Cedex
+44 (0)203 788 2677
Bollin House, Bollin Walk
Wilmslow SK9 1DP, UK
+974 44313891
Intramas WLL, Barwa Village
Building No.1, Office No. 10 & 12
Doha, Qatar
Abu Dhabi,
+971 (2) 6733336
Ittihad International Investment Complex
8th St., M-15, Mussafah
Abu Dhabi, United Arab Emirates
Kempton Park,
South Africa
+27 10 595 1879
58 Maple Road
Kempton Park
1619, South Africa
7 International Business Park#03-01 Tech
Quest Building
Singapore, 609919 Singapore
86 21 5899 3279
86 400 820 2515
290 Guiqiao Rd
Pudong, Shanghai, 201206