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Sampling systems for gas measurement in wastewater applications.

Greg Shires

Water/wastewater organizations have for many years struggled with measuring gases and vapours in sewers over long periods of time.  

The physical nature of the application creates high levels of corrosive gases, heat, water and high humidity which negatively impact all sensors including catalytic, electrochemical and photo ionisation.

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Topics: Material Selection, Gas Detection

Q & A: on Calibration & Bump/Response Testing of Gas Detection Instruments

Greg Shires

A question and answer session with Greg Shires, Managing Director of CAC GAS & Instrumentation.

First let me by clear on this subject: Gas detection instruments are life saving devices.  

They can make the difference between a worker going home at night or not. If I was required to use a gas detection instrument in my work place each day I would make sure it was calibrated weekly and bump tested prior to every use. This would make sure it was accurate and I was safe.

So, let’s discuss this further.

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Topics: Calibration Gas Selection, Gas Detection

Gas Detection Response Testing in Coal Mining

Greg Shires

When using hand held gas detection instruments in underground in coal mines, a crucial step is the testing of each gas detection instruments prior to use.

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Topics: Material Selection, Gas Detection

Bump Testings Options for Gas Detection Instruments

Greg Shires

Bump testing gas detection Instruments on a daily basis has become more and more common.

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Topics: Material Selection, Gas Detection

Six Gas Detector Calibration in the Wastewater Industry

Greg Shires

Issues & Solutions for Calibrating a Six Gas Detector in the Wastewater Industry

Continuing improvements in workplace safety and the ongoing protection of workers within Industry is creating a new wave in the water/wastewater sector. Many organizations are moving towards measuring six (6) gases in sewage treatment and sewer lines throughout Australia.

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Topics: Gas Theory and Applications, Calibration Gas Selection, Gas Detection

ISEA: Bump Testing and Calibrating Your Gas Detectors

Greg Shires

The International Safety Equipment Association (ISEA) is the leading national organization of manufacturers of safety and health equipment including environmental monitoring instruments. ISEA is dedicated to protecting the health and safety of all workers through the development of workplace standards and the education of users on safe work practices and exposure prevention.

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Topics: Regulations and Standards, Gas Detection

Why Are You Still Not Bump Testing Your Gas Detector?

Greg Shires

022_CACGas_BTS-HP New Casing-257206-edited.jpgAfter 30+ years in the gas detection business, I am still surprised at the number of gas detection users not bump testing their instruments prior to use.   

Whatever the term….bump test, challenge test, function test, response test or verification. The only way to guarantee that a gas detection instruments will detect gas is to test it with a known concentration of gas.  Exposing the instrument to a known concentration of test gas will show whether the sensors respond and whether the instrument functions properly.

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Topics: Material Selection, Regulations and Standards, Gas Detection

Chlorine Gas Calibration - Challenges for Gas Detection Instruments

Greg Shires

The process of gas calibration involves the testing and comparison of your gas detection instruments against some fixed reference value. The process includes using an accurate gas mixture as a reference and comparing it with the values provided by the instrument being tested. The cylinder mixture or device that produces the assigned correct value is known as the standard and it plays a vital role in all gas calibration.

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Topics: Gas Theory and Applications, Calibration Gas Selection, Gas Detection