I have this regulator:
http://www.oxyturbo.it/uk/dettaglio.php3?id=123
It is rather cheap, but it does have two gauges, which is desirable. Problem is, I suspect that it is very inaccurate. Up until very recently, I've just adjusted flow to about 10 l/min, and I've had no problems. However, a professional welder friend visited this weekend, and I asked him to test a bit for me. He welded while I adjusted the flow rate. The welds were perfectly OK all the way down to about 2 l/min on the flow meter, and that's suspiciously low. The gas used is a mix of 18% CO2 and the rest is Argon. The welder is a Kemppi Minarcmig 150 adaptive.
The welds were shiny and not porous, so should be OK. Are there any other way of judging flow rate? Attach a ballon to the torch?
When the regulator is at 10 l/min, there is a quite noticeable hiss from the torch, but naturally it is a lot less audible at 2 l/min.
http://www.oxyturbo.it/uk/dettaglio.php3?id=123
It is rather cheap, but it does have two gauges, which is desirable. Problem is, I suspect that it is very inaccurate. Up until very recently, I've just adjusted flow to about 10 l/min, and I've had no problems. However, a professional welder friend visited this weekend, and I asked him to test a bit for me. He welded while I adjusted the flow rate. The welds were perfectly OK all the way down to about 2 l/min on the flow meter, and that's suspiciously low. The gas used is a mix of 18% CO2 and the rest is Argon. The welder is a Kemppi Minarcmig 150 adaptive.
The welds were shiny and not porous, so should be OK. Are there any other way of judging flow rate? Attach a ballon to the torch?
When the regulator is at 10 l/min, there is a quite noticeable hiss from the torch, but naturally it is a lot less audible at 2 l/min.