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[tbone1004]

...

correct. You'll need a propane regulator to screw on there. CGA600 is the fitting. Those regulators are annoyingly not all that cheap. You can hunt around and find other adapters, or DIY compile a regulator with a flowmeter etc. but you'll probably end up around the same cost
https://www.amazon.com/0-5lpm-Nicke...words=cga+600+regulator&qid=1579023127&sr=8-4

 

[KDAD]

This one by Oxycheq:

I just ordered Bump Gas from Oxycheq:

OxyCheq - 15 PPM CO Bump Test Calibration Gas

Seems to not need a regulator. Grainger does sell similar.

 

[rhwestfall]

I use this inexpensive regulator for calibration with 17l cylinders:

and I have this plumbed in on my compressor that is used to feed the meter and them my monitor device at the correct flow rate:

https://www.amazon.com/gp/product/B009PAS4W2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

A couple hospital tubing quick connects lets me then plumb it so the flow meter can feed calibration gas for service.

Fairly inexpensive IMHO.

YMMV

 

[rhwestfall]

my reference gasses come from CalGasDirect. The HAZMAT fee is minor as I distribute that cost over a number of different cylinders as I do 2 point calibrations, and will also test with another reference gas...

YMMV

 

[kelemvor]

@RayfromTX is this the cal gas ordered: https://m.grainger.com/mobile/product/GASCO-Carbon-Monoxide-24VN14
That cylinder does seem to require a regulator.

It uses a CGA 600 regulator such as these: http://www.calgasdirect.com/cga-600-regulators-calibration-gas/

 

[tursiops]

I use this inexpensive regulator for calibration with 17l cylinders:
View attachment 561427

and I have this plumbed in on my compressor that is used to feed the meter and them my monitor device at the correct flow rate:

https://www.amazon.com/gp/product/B009PAS4W2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

A couple hospital tubing quick connects lets me then plumb it so the flow meter can feed calibration gas for service.

Fairly inexpensive IMHO.

YMMV

https://www.amazon.com/Gasco-CV-2-Calibration-Control-Valve/dp/B01F2BNWD8

 

[rhwestfall]

The reason for the Dwyer flow meter is that the Sensorcon requires a different flow rate than the CooTwo/NitroxBuddy for use and calibration. Neither of which is obtainable with the dive product flow reducers (I use the OxyCheq DIN).

YMMV

 

[tursiops]

The reason for the Dwyer flow meter is that the Sensorcon requires a different flow rate than the CooTwo/NitroxBuddy for use and calibration. Neither of which is obtainable with the dive product flow reducers (I use the OxyCheq DIN).

YMMV

Will this suffice?
https://www.amazon.com/JIAWANSHUN-0...MNZ6P8MHTJF&psc=1&refRID=RS27F6MXZMNZ6P8MHTJF

 

[seaseadee]

The reason for the Dwyer flow meter is that the Sensorcon requires a different flow rate than the CooTwo/NitroxBuddy for use and calibration. Neither of which is obtainable with the dive product flow reducers (I use the OxyCheq DIN).

YMMV

does that mean the canister thingy that I got from Oxycheq won't work to calibrate my CooTwo?

 

[KDAD]

Thanks for helping to round out the details. I don't have CO/O2 meters but use some of these things in my day job so wanted to make sure that everyone is aware of additional items needed for their specific meter and cal gas tank combo.

@tursiops that rotometer should work as a less expensive alternate.