I tried the search and I didn't find any info about Gas Detectors. So for the people that do mining and other underground fun activities, what are you looking for into such a device?
The ones they sell here are all certified or calibrated. Do you really need this? I also saw that some will only work for a year and than want to be recalibrated before they work again.
And what do you in general pay for a multi gas detector?
I found one for about 450 bucks and wanted to know if this would be an ok price.
Location: Back in New Mexico where I belong Gender: Male
Dressed for a scarecrow ball.........
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Re: Gas Detector <Reply # 3 on 5/7/2013 2:25 AM >
In certain circumstances, they are seriously nice to have. Lots of your West Coast guys have them. Might try the Pacific Southwest forum. I have changed my personal exploring ethics code. From now on it will be: "Take only aimed shots, leave only hobo corpses." Copper scrappers, meth heads and homeless beware. The Jonsered cometh among you, bringing fear and dread.
never used one in the hundred or so underground explores I've done....not saying they arent without some merit, but I think they're pretty redundant for most types of underground locations you're likely to encounter. A little bit of common sense and good judgement goes a long way underground.
But yes if you are going to buy one you're going to want to keep it calibrated...this is often done yearly or after a certain amount of use. Having an uncalibrated gas detector is just silly....it might work, but it might not too. www.tohellandback.net
Re: Gas Detector <Reply # 8 on 5/10/2013 8:48 PM >
This film is exactly how deaths happen.
I make underground entry's a couple of times a week. The fire department told us, they'll only show up and treat an incident as a recovery..... no rescue will take place.
They said they won't risk losing one of their men until they are all set and all recovery equipment is in place. This can take 10 to 15 minutes. They say you're dead by then anyway.
This has caused us to be very careful, we calibrate our 4gas testers monthly, and we've made sure we have our own harnesses, rescue tripod, and blowers.
If I've ever gone in a access hole with out this equipment, I only stay in as long as I can hold my breath, and that ain't very long.
Gas detectors are expensive, and the sensors that wear out are also expensive. If you buy a used 4gas detector, I would caution you against buying a used one off EBAY, these could be in need of calibration and need new sensors. You can see a million miles tonite, but you can't get very far.
Honorary member of UER lifetime acheivement award winning, 2Xplorations and Guide Services, Texas.
Re: Gas Detector <Reply # 9 on 5/12/2013 4:51 PM >
Posted by cr400
This has caused us to be very careful, we calibrate our 4gas testers monthly, and we've made sure we have our own harnesses, rescue tripod, and blowers.
Gas detectors are expensive, and the sensors that wear out are also expensive. If you buy a used 4gas detector, I would caution you against buying a used one off EBAY, these could be in need of calibration and need new sensors.
Do you calibrate them yourself and if so how?
I would never buy a used one, but I might import one from China as they sell the same as you can buy here, just without the price company sticker on them.
Re: Gas Detector <Reply # 11 on 5/22/2013 8:06 PM >
Posted by SuchundFind
Do you calibrate them yourself and if so how?
I would never buy a used one, but I might import one from China as they sell the same as you can buy here, just without the price company sticker on them.
From what I have read you can calibrate some of the gasses yourself or have it sent in to be calibrated for a reasonable price. Calibrating them yourself requires that you are able to buy a small canister of the gas with the correct "calibration ppm" of the gas and then (following the manufacturers model specific instructions) use a tube to transfer the gas to the sensor to create a baseline. That is pretty much how you calibrate the sensors and it will usually need to be done around 10 times a year if you used it constantly. Some places that use the gas detectors often test more frequently because they have their own testing equipment (ie every day or week).
Regardless of the calibration specs, most if not all gas detector sensors wear out after a few months to a few years and need the sensor packs replaces. The sensor packs are quite expensive (almost the cost of the device itself) and can be difficult to order from the manufacturers.
I have had my eyes peeled for a gas detector system for quite some time but havent really come across anything that I think I am willing to purchase for personal use. "It's nothing, only the smellz."
Also I found this cheaper version, but it only detects H2. Would anyone chime in here and inform if the second link to the detector I posted is not effective? Only detects one gas, no calibration need, good for two years?
Re: Gas Detector <Reply # 15 on 5/28/2013 3:56 PM >
Posted by Ricky_from_TV
What is that? Looks like a lamp o.0
It's a flame safety lamp. Basically a low-tech but dependable device that registers both oxygen-deprived gasses and explosive gasses. If the flame gets real small you are in an oxygen-deprived environment. Real big means you are in a combustible environment (the fine mesh surrounding the filament prevents it from igniting flammable gas). Thousands or miners depended on these things before the advent of fancy digital detectors.