Am I Using the Right Gas Monitor?

 

Q: Am I Using The Right Gas Monitor?

A: At Certified AIR SAFETY we understand the need for the proper type of Portable Gas Detector to suit your Life Safety needs.



By using our years of experience, expertise and working closing with our major clients, we have created what we believe to be the Definitive Rule for choosing, and using your Gas Detection Monitors.



Levels of Detection, Definitions



Level "A"

Chosen for the most robust of features and durability at the highest levels of detection. To be used for the detection of Combustible gases throughout the ppm, LEL, and Percent by volume ranges. Using Catalytic and Thermal Conductivity sensors to reliably detect the presence of High Levels of CH4 (% VOL) within an Inerted atmosphere of CO2, N2, etc.

Features an Oxygen sensor to determine the presence of oxygen in confined spaces, or to determine the Minimum level of oxygen for the reliable detection of combustible gases at lower levels (ppm, LEL).

Features a Carbon Monoxide, or other Toxic sensor to detect the presence of Toxic gases within a confined space "as required by OSHA 29 CFR, 1910.146, (d)(5)(iii)" or within any work area.

Features Data Logging for the retrieval of exposure data, post incident, or for Industrial Hygiene monitoring of employee exposures, and the option of Both Alkaline and rechargeable batteries in a field changeable configuration.

Features the use of a robust and reliable sample draw pump.



Level "B"

Chosen for Use within a Confined Space, or general area monitoring. To be used only for the detection and continuous monitoring of Combustible and Toxic gases within the ranges of Life Safety.

 

  • Combustibles, 0 to 100% LEL.

 

  • Oxygen, at the 19.5 or lower, and 23.5 or higher alarm levels.

 

  • Toxic gases at the STEL, CEILING, and TWA alarm levels.



The units have been selected for durability, ease of use and reliability.

Features the use of A Catalytic Sensor for the reliable detection of levels of Combustible gases (% LEL) within Confined spaces, or for general area monitoring.

Features an Oxygen sensor for the presence of oxygen in confined spaces, or to determine the minimum presence of oxygen for the reliable detection of combustible gases at lower levels (ppm, LEL).

Features a Carbon Monoxide, or other Toxic sensor to detect the presence of Toxic gases within a confined space "as required by OSHA 29 CFR, 1910.146, (d)(5)(iii)" or within any work area.

Features Data Logging for the retrieval of exposure data, post incident, or for Industrial Hygiene monitoring of employee exposures, and the option of Both Alkaline and rechargeable batteries in a field changeable configuration.

Features the optional or built in use of a robust and reliable sample draw pump.

Level "C"

Approved for general leak detection only.

Features the use of a Metal Oxide Semi Conductor Sensor for the detection of Combustible gases only at the lower levels of detection, PPM and LEL. These units do not generally feature interchangeable batteries, Oxygen, Carbon Monoxide, or other Toxic sensors and are the least expensive to purchase.

These monitors are NOT approved for the detection of gases within the life safety ranges, for confined space entry, pipeline inerting, or hot work permitting. No recommendations for selection of these monitors have been made.

It is recommended that if a location is in the market to purchase new Gas Detection Equipment that they consider the above and the attached spread sheets and consult with WGP-West Safety Department for current product specifications and pricing.