Posts in category: Gas Detection

Calibration is the process of configuring an instrument to provide the needed result within an acceptable range. It’s the process of ensuring that the instrument is working properly and avoids inaccurate readings. Gas Monitors are life saving instruments that must be calibrated regularly in order to function.

ANNUAL SERVICE

Manufacturers often offer annual inspection. If they don’t, it is highly suggested to get an authorized company to do a full recalibration and (if necessary) repair at least once a year. Even if this is done, gas monitors require regular bump tests and self calibrations to be done onsite by users.

BUMP TEST

This is when you hold the gas detector to a certain level of the gas hazard it is intended for long enough to cause an alarm. It checks that the gas detector is working at all. This should happen BEFORE EVERY USE. If it fails, it needs to be recalibrated.

SELF CALIBRATION

This is done using an internal menu within the gas detector. It requires exposure to the gas blend it was designed for in order to re-establish the accuracy of the sensors. It is IMPERATIVE to use the exact gas concentration and blend for the brand of monitor and to check the expiration dates. If it fails, it must be repaired. Frequency of calibration varies. Always follow manufacturer instructions.

Learn more about common challenges in gas detection HERE.

Learn more about types of monitors HERE.

Browse our Gas Detection here.

Gas detection is no joke. It’s a matter of life and death. That’s why gas detectors are an indispensable tool across various industries. They save lives, prevent explosions, and protect against harmful chemical exposures. 

But how can we detect gas leaks and hazards that are practically invisible? There are several types of gas monitors for all types of hazards.

PORTABLE vs FIXES

Fixed monitors: stay put, constantly scanning for gas hazards in specific areas. Portable detectors: move with the user, providing real-time assessments of gas presence. They’re particularly useful in rarely visited areas that may accumulate toxic gases or have low-oxygen environments.

However, it’s not one-size-fits-all when it comes to gas detection. Different gases pose different risks and require different detection methods. Flammable gases, toxic gases, asphyxiating gases, and combustible gases all need specific detection equipment to ensure accurate monitoring and appropriate responses. 

TOXICITY SENSORS

Toxicity Sensors sample the air for known toxic gases.

Metal Oxide Semiconductor (MOS): Ideal for gases like (CO) & (HS2). Detect changes in electrical conductivity when gases come into contact with a metal oxide surface. Electrochemical: Designed to detect toxic gases&oxygen deficiencies. Rely on chemical reactions that occur at the electrode surfaces when gas comes into contact with the sensor.

LES Sensors

For combustion hazards and the detection of explosives and flammables

Catalytic Bead Sensors: Great for flammable gases; utilizes a heated wire coated with a catalyst that promotes oxidation of combustible gases.

Infrared (IR) Sensors: Perfect for hydrocarbons and combustible gases, based on absorption of infrared light at specific wavelengths.

Photoionization Detectors (PIDs): Great at detecting multiple threats; utilizes UV light to ionize gas molecules, allowing for the detection of volatile organic compounds (VOCs) and other gases.

Many gas detection systems can be seamlessly integrated with other safety systems, like fire alarms and ventilation systems. This allows for centralized monitoring, coordinated responses, and enhanced safety management. 

Don’t forget about calibration! Regular calibration ensures that detectors function correctly, providing accurate readings and timely alerts. It compensates for sensor drift, environmental factors, and aging components. So, stay on top of your calibration game. Learn more about calibration HERE.

Gas detection is serious business, but with the right tools and knowledge, you can protect yourself, your team, and your site. Don’t leave it up to chance – invest in gas detectors and ensure everyone’s safety.  

Learn more about common challenges in gas detection HERE.

Learn more about calibration practices here.

Browse our Gas Detection here.

1. https://dodtec.com/news/a-beginners-guide-to-different-types-of-gas-monitors.html 

2. https://www.linkedin.com/pulse/ensuring-safety-comprehensive-guide-gas-detection-calibration/ 

Gas detection systems are a key component of safety, but ensuring personnel are trained on the entire system is just as important as having the device itself. Training programs should cover everything from gas properties and detection principles to instrument operation, calibration procedures, maintenance practices, safety regulations, and emergency response protocols. It’s also important to address challenges and adopt best practices to truly enhance the effectiveness of gas detection systems. Let’s take a closer look at these common challenges: 

1. Sensor Drift: Over time, gas sensors can drift, leading to inaccurate readings. Regular calibration and maintenance can help mitigate this issue. 

2. Sensor Poisoning: Exposure to certain gases and contaminants can cause sensor poisoning, resulting in reduced sensitivity or failure. Implementing proper sensor protection measures is essential to prevent this problem. 

3. False Alarms: False alarms can lead to complacency and a lack of trust in gas detection systems. Proper alarm management, including setting appropriate alarm thresholds and implementing alarm verification procedures, can minimize false alarms. 

4. Maintenance and Testing: Regular maintenance and testing of gas detection equipment are crucial for optimal performance. Establishing maintenance schedules and protocols helps keep the equipment in good working condition. 

The best training includes a wide range of topics, such as confined space dangers, common gases and their effects on the body, troubleshooting techniques, correct alarm responses, calibration and bump testing, pump versus non-pump operations, sensor types and troubleshooting, as well as key information on battery and water resistance. It’s important to cover all the bases to ensure a comprehensive understanding of gas monitors.  

Unfortunately, Confined Space Entry (CSE) training often falls short when it comes to fully addressing gas monitor operation and the aforementioned topics. That’s where our partnership with top-notch Gas Monitor Competence Training comes in. They provide the training needed to fill the gaps left by traditional CSE training. 

The benefits of a well-trained workforce are significant, including increased safety awareness, faster response times, reduced false alarms, and an overall enhanced safety culture within the organization. A comprehensive understanding of gas monitors is not just important for efficiency, it’s a matter of life-saving importance. 

Read our guide to types of Gas Monitors HERE.

Learn more about calibration practices HERE.

Browse our Gas Detection here.

1. https://www.linkedin.com/pulse/ensuring-safety-comprehensive-guide-gas-detection-calibration/ 

2.  https://www.gasmonitorcompetence.com/