Gas Detection Technology
⚠️𝐓𝐄𝐒𝐓 𝐘𝐎𝐔𝐑 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄⚠️
You are using a standard 4-gas meter to detect the presence of methane (CH4) in the environment. Your meter is equipped with a catalytic bead LEL sensor, which is calibrated to methane (CH4). If you had a 30% methane/70% air mixture, do you know what your LEL sensor would show on the display at standard temperature and pressure?
Comments (4)
Please explain the correct answer.
I confess to being old school and I confess to having used 4 gas detectors not nearly as sophisticated as those being used today. Back in my day, anything over 10% of LEL meant we don't go whether it was inside a confined space or out in the open on a haz mat response. The instrument was a simple go or no go detector for LEL.
A lot has changed and I will adapt as needed. Keep in mind in the petrochem industry we bonded and grounded everything. One static explosion of a flammable liquid and the death of a friend and coworker was enough to convince us all that we would never make that mistake again. No ventilators, radios, vacuum hose or vacuum truck operated unless grounded and bonded.