Training Bulletin 150 Drager Gas Indicator Flashcards
What are the 5 gases read by the gas meter?
- oxygen
- carbon monoxide
- hydrogen sulfide
- hydrogen cyanide
- methane
The short term exposure limit allows for exposure for how long with no impairment?
15 minutes
How often is the gas meter calibrated by the squad?
Every 6 months
How long will the battery last after the low battery alarm goes off?
20 minutes
How do you clear “peak value reading?”
Press “ok” button for 5 seconds
On the 5 gas meter, what are the alarm levels of O2?
LEL- 19.5%
UEL- 23.5%
On the 5 gas meter, what are the alarm levels of CO?
Lower- 25ppm
Upper- 50ppm
On the 5 gas meter, what are the alarms for H2S (hydrogen sulfide)?
Lower- 10ppm
Upper- 15 ppm
On the 5 gas meter, what are the alarms for HCN (hydrogen cyanide)?
Lower- 4.7ppm
Upper- 10ppm
On the 5 gas meter, what are the alarms for CH4 (methane)?
LEL- 10%
UEL- 20%
In regards to the 5 gas meter, what is TWA?
Time Weight Average- the level a worker can be exposed to a chemical for an 8 hour day
What is the Short Term Exposure Limit?
Amount of exposure a worker can be exposed to for 15 minutes without experiencing any signs or symptoms
When does the 5 gas meter need to be exposed to fresh air?
Before and after use
At what O2 level will the 5 gas meter display incorrect readings?
10%
How long are the batteries on the 5 gas meter usually good for?
2-3 weeks
