Using Draeger Tubes for Chemical Identification with PID's/LEL Detectors

[@ZACHOFF1]

Draeger now has an reference app instead of a book for their tubes and chemical sensors. It is a free app called gas detection. Go to the app store for your phone and download it. Great reference for hazmat teams, safety engineers and industrial hygienists.

[@apexel27]

is the ppm reading on the tubes based on weight (mg/L) or volume(mL/m3)?

[@ZACHOFF1]

Volume

[@arifsomawijaya3381]

Thank you Jim this is a great Video. I have used draeger to measure H2S content here for a while but I have a question. How accurate is the reading if we use an expired tube? I have tried it myself and I found no significant difference between the expired (march 2019) and the new one (july 2024). But I need an expert opinion to prove this thank you.

[@lexnaj11]

how about more clarification on the application of atmospheric, humidity and temperature compensation factor to the values of toxic sample tubes readings in order to achieve the correct values of gas concentration. please clarify..

[@Vladut_Roblox]

nice work mr Jim

[@MrEMA433]

Thank you, great video!

[@unounv]

Just like to add that another major use case is the tube being intrinsically safe for class 3 div 2 environments.

[@ZACHOFF1]

Not all of them can be used in classified areas. I believe the halogenated hydrocarbon tube is one of them that gets extremely hot, it basically pyrolizes the target gas in the first tube segment and changes it into something that can be detected on the indicating layer.

[@unounv]

@@ZACHOFF1 good to know thanks!

[@BreyonnaMorgan18]

What camera zooms in remotely and focuses perfectly?

[@ZACHOFF1]

That was an old Sony MiniDV camera

[@Whisperin100]

Jim on ships we always use long hoses 30m. aprox. for lowering down in the tank , due to hose length more strokes are required , is it ok if we do 8-10 strokes just for safety to check for the gas , can more strokes then required damage the tubes or its fine ?

[@ZACHOFF1]

Draeger makes a specific extended hose, just like Uniphos, that you attach the tube at the very bottom on hose. The end of the 30m. That way you do not need extra pumps to compensate for the hose volume.

[@ZACHOFF1]

You won’t damage the tube, but you will get incorrect readings. For just safety to see if any chemical is present, multiple extra pumps won’t hurt. The more pumps (sample volume) the lower the detection, to a point. It is always best to use the proper amount of pumps indicated on the tube. N= number and use the proper hose as I mentioned.

[@celesteboor924]

Great video!

[@TomCruiseMode]

Great video well done.

[@mibinchackomibinchackovaya5108]

Is any expiry date of this ammonia tube

[@ZACHOFF1]

Yes all tubes have listed expiration dates. Usually, but not always, two years

[@altonsimpson7521]

where on the tubes can i find the expire date.

[@ZACHOFF1]

It would be on the box. A lot number will be on the tube that corresponds with box lot.

[@Haphagurd]

Can you tell me why a Water Vapor tube would be applicable to anything in industrial hygene and safety? I never understood why water vapor would need to be detected. Isn't there water vapor in the air?

[@ZACHOFF1]

Typically gas and vapor detection instruments can be used to around 90% RH, non condensing. Using a water vapor tube could be used by some to make sure they are not over that level. NH3 is lighter than air, but has a affinity to moisture and will drop in humid environments. Also PID's, some IR analyzers and IH organic vapor dosimeters can have a problem with high humidity. This video was talking about chemical specific detectors tubes used in conjunction with general sensors like PID''s and LEL (CGI's) for the chemical family determination of an unknown.

[@ZACHOFF1]

Not many uses for IH work, however, many high-end analyzers have issues with water vapor and a tube that can give you how much can be useful. In fact, water vapor will mess with GC-MS, IR, IMS and PID sensor/detectors at moderate changing concentrations. New instruments like AccuSense, have technology in them that takes water vapor, temperature, and pressure into account. See www.seertechnology for more on AccuSense

[@ZACHOFF1]

Yes there is water vapor in air. Many, many high end analyzers have issues with water vapor interference. Water vapor tubes are usually used in the gas supply industry. To make sure to keep humidity a low level. Humidity can react with gases. Also for natural gas lines, humidity is not preferred.

[@rubibojorquez3216]

Need to put in place in place a gas detector system for a huge area, Can i contact you for support please.

[@ZACHOFF1]

Yes, absolutely