Temperature measurement for subcooling

[idratherbsailing]

I think they would be nice, but I'm tooo cheap.
Digital still has transducers, seen them go bad on Carriers and McQuay's

[mickyj]

I have not worked much with 410a but I have heard they use different oils, wouldent this cause contamination by switching from 22 to 410 with the same guages? just my thought.

[BigJon3475]

They do use different oils. The POE oils can mic with trace amounts of mineral oils.

http://www.lennoxcommercial.com/res/...10a/frame4.htm
http://www.lennoxcommercial.com/res/...0a/frame15.htm

They are also "backward compatible" with mineral oils according to this from Lennox.

[acemechanical]

Hey Ga-Tech, How you liking the digital YJ gauges you picked up last year?
Just curious to see if they are holding up for you.I just picked up a set 2 weeks ago and find them pretty damn nice.
Hows yours for accuracy on the SH/SC mode??
I sometimes question the temp reading I get with the velcro strap temp probe thingy.
I use a fluke meter with clamp on temp- as most here do.

[ga-hvac-tech]

Hey Ga-Tech, How you liking the digital YJ gauges you picked up last year?
Just curious to see if they are holding up for you.I just picked up a set 2 weeks ago and find them pretty damn nice.
Hows yours for accuracy on the SH/SC mode??
I sometimes question the temp reading I get with the velcro strap temp probe thingy.
I use a fluke meter with clamp on temp- as most here do.

I think the YJ is a GREAT tool, and I am glad I bit the bullet and spent the $$$! Just FYI: Doug Lockhart (Digi-cool, the company that builds the units for YJ) will have an upgrade kit out by the fall that will add some neat features. The estimated price will be around $200, you can install it yourself.

I generally use a different temp sensor also, I think the YJ is not that accurate. Part of the upgrade will be a dual clamp (two separate clamps) style sensor (both high and low clamps, albeit the unit will only do Sh or SC one at a time... need to switch back and forth).

What I can say for sure is that this unit is ROCK SOLID!!!!! I have dropped it once, and it has been rained on a few times. Not a single problem other than the temp issue we all know about. I must admit it is a tad tuff to red in some extreme sunlight conditions, but most LED screens have this problem.