argon gauges for the tig

[asg fabrications]

Hi
ive had a dual gauge for a while now and i put my flowmeter on the side of that but on the dual gauge the flow is in psi what should i set that to before i set my flow meter do you think???
and whats the difference with useing a normal tig cup number 6 and a gas lens number 6, pics would be great if someone can explain and show me?
regards

 

[madkayaker]

the flow meter will have a max PSI (mine is 100psi) so set it below that its probily not that critical TBH

 

[FranV8]

The flowmeters tend to be calibrated to argon at certain conditions, for example one of mine is 3 barg at 20 degrees C. I set mine as low as possible whilst reading the flow, means any leaks after the flowmeter are minimise, probably at the expense of flowmeter accuracy.

 

[hotrodder]

Gas lens versus regular collet/ceramic... http://www.mig-welding.co.uk/forum/showpost.php?p=148488&postcount=4, the weldcraft demo pics are 17/18/26 size, third pic is of wp9/20 gas lenses

As said it's not super critical but i'd set the pressure to the minimum needed i.e. with the reg shut off i'd open the flow meter wide and then dial in the regulator. IIRC fixed output regs are typically preset to 3 or 3.5bar and max pressure for most flowmeters is around 3.5bar

 

[asg fabrications]

cheers for info, at the min I open the flowmeter fully then set argon reg in psi till I am say 5lpm over what I want to use on the flowmeter then dail it down to what I use if that makes sense...

 

[asg fabrications]

i heard on this forum i think that you have to turn the lpm up more when useing a gas lens but the info on the link said you can save gas and use lower lpm????

anybody know where i can get some from for a wp26 torch??

 

[FranV8]

Look at the weldequip store on here. I'm tempted by the set for about £32 next time I'm buying welding bits.

 

[hotrodder]

i heard on this forum i think that you have to turn the lpm up more when useing a gas lens but the info on the link said you can save gas and use lower lpm????

They're both kinda right... the smoother flow with a gas lens means you can get away with lower flow rates in many situations and at the same time it takes much higher flow rates before you get probems due to turbulant flow or venturi effects drawing in the atmosphere which is handy if you're fighting drafty conditions or need half a metre of tungsten stick out to reach the weld.