Good Gas Meters
- Thread starter ACM
- Start date
Groninger Kroon
New member
Hi, have a quick browse of this thread
Gas meters - recommendations?
You probably want to "bump test" it from time to time to make sure it actually alarms. You should be able to do this by just cupping the detector in your hands and breathing into it, which should drop it to about 16.5% O2. Obviously properly bump testing it with all 4 gases would be the ideal...
buddlepit.co.uk
I 2nd that, why risk you life, get a quality meter, can't beat an Altair.
I'd be interested to hear your thoughts on comparing an Altair with a Crowcon.
Chris.
Can’t compare, only used altairs, had no issues despite getting wet and every time I’ve had them calibrated, they’d not gone out of calibration so stick with them.
cantclimbtom
Active member
If you can afford it, get one covering
I've got an Altair 4x and wish I had CO2 also
- CO
- O2
- H2S
- LEL
- CO2
I've got an Altair 4x and wish I had CO2 also
Since we have no takers for the difference in the monitors I, shall answer .
So regarding the differences from cro con - Altair .
Really there is minimal difference .
Altair you can change the settings of alarms yourself without specialist kit . For this luxury you pay a lot more money .
I only have always recommended Altair, due to my multiple courses of confined spaces training was taught using a Altair .
When we hired them out countless times we often got given cro con there is no difference tbh .
Co2 presence cannot be read by missing o2 .
Without googling it I don’t know if sensors last longer for either brand ? Would imagine they are the same shelf life .
The key to a gas monitor is training / bump tests / calibration. I see so many people use them wrong !
If you don’t know how to use one fully, you shouldn’t be in there .
So regarding the differences from cro con - Altair .
Really there is minimal difference .
Altair you can change the settings of alarms yourself without specialist kit . For this luxury you pay a lot more money .
I only have always recommended Altair, due to my multiple courses of confined spaces training was taught using a Altair .
When we hired them out countless times we often got given cro con there is no difference tbh .
Co2 presence cannot be read by missing o2 .
Without googling it I don’t know if sensors last longer for either brand ? Would imagine they are the same shelf life .
The key to a gas monitor is training / bump tests / calibration. I see so many people use them wrong !
If you don’t know how to use one fully, you shouldn’t be in there .
C/B
Member
Personally, when I buy a new GD I'll likely get a four gas, but I'd be happy enough with only O2. Reasons being: I've never detected H2S, even when I've imagined/felt the effects of it. Only ever detected CO in a live mine that ran diesel engined vehicles. Even in gassier mines when H2S has registered, it's been in small amounts and never alarmed out. To be on the safe side I'd assume any low O2 is being displaced by CO2 unless you know otherwise. In nearly all low O2 mines that I can remember, I've been able to taste the CO2.
cantclimbtom
Active member
Probably H2S more and issues for drains (and anyone daft enough to explore chalk wells) or anywhere that organic matter can accumulate and rot in lowered O2 environment?
That all said the only time I've ever been in a work environment (years ago) where the safety sign instructed people to "RUN!" was somewhere that had a flashing light (high noise environment) if an H2S leak was detected. That was admittedly a refinery not a mine, but I'd still want to err on the safe side with that stuff.
C/B
Member
It certainly was an odd one as it's in a wet part of a local limestone mine that we've never been able to push through. Different people have felt the same symptoms but it's never registered on three different brands of GD that were all in calibration. Each time we bailed to a different part of the mine and the symptoms went away.
