REVIEW: Digi-Cool AK900 digital gauges

[Brent Ridley]

Jbart,

I'm testing the Testo's next week. Look for reviews on the 550 and 570's in the next two weeks.

The YJ's look nice too. Hopefully I will be able to get my hands on a set in the coming weeks.

[hvac5646]

[QUOTE=jpsmith1cm;15356461]HMMM....Just a comment: This comment ^^ seems in poor taste. Brent took the time and spent his money to give an honest review of a unit that you, for some reason, choose to completely ignore as a valid choice in the digital field today because j-mart and whatever suppliers you use choose not to carry it.END QUOTE

JP, my comment was not in "poor taste' or otherwise meant to be derogatory

.Just because I disagreed with the review doe not make me a horrid person. It was an opinion. Nothing more. Last time I looked every buddy was entitled to one. Being demonized over something as trivial as a Diggi Cool is taking the low road

I have my opinion and have a right to express it. The only thing in "bad-taste" was the comment that used that word...it was over zealous and not called for as my post was not intended to degenerate anyone. Nor was there any shots taken at Diggi Cool....strictly a person with an opposing view point.

[76olds]

Brent,

Been on the fence for a while about the AK's, your review has me sold on them. I will be ordering soon.

Question on the clamp on themperature sensors: what do you (or anyone else) think is the smallest size line you can see them working on?

[Jbart]

Isn't one of those yj drsa really a dc with a yj logo on it?

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What is a drsa? I'm not sure. I can't see Ritchie engineering putting their name in it without them making it.

[Brent Ridley]

DRSA = Digital Refrigerant System Ananlyzer aka Digital Gauges.

[Brent Ridley]

Brent,

Been on the fence for a while about the AK's, your review has me sold on them. I will be ordering soon.

Question on the clamp on themperature sensors: what do you (or anyone else) think is the smallest size line you can see them working on?

The smallest size the clamps will work on is 1/2 or close to it. It tried on 1/4 and the clamp sensing probe wouldn't touch the pipe.

But that's what the Velcro straps are for. The velcro style will fit any small size pipe. The DC's come with the Velcro sensor style sensors. The scissor clamps are extra.

[hvacrmedic]

What is a drsa? I'm not sure. I can't see Ritchie engineering putting their name in it without them making it.

Regardless,

[

[Doug Lockhart]

Mine either. So I wait a few seconds and zero them out. I can say it used to irk me that I can't have equal pressure on both high and low but I've learned to live with it

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Typically guys you'll find that the barometric pressure will affect the digital transducers as they are that sensitive. I have had 180+ psi from a past 410a SC trapped in both the High and Low side for the winter in a backup set of 'loaners' in my van and in the spring when I needed a third set, dropped the pressure to see if they needed zeroing.....they were both 0.0 psig. Now don't forget you are 'zeroing' them to atmosphere which is technically wrong.....but it's a thing we've always done in the industry (myself included) but when we've had Reeferman, who used to do a lot of field testing for us, zero them in Calgary, his vacuum (would have been 200 microns or less) was pulled, he would only read 26-27"Hg on his gauges! He's at 3500' altitude so his 'zero' is basically 3"Hg compared to seal level. FWIW

[keef]

Typically guys you'll find that the barometric pressure will affect the digital transducers as they are that sensitive. I have had 180+ psi from a past 410a SC trapped in both the High and Low side for the winter in a backup set of 'loaners' in my van and in the spring when I needed a third set, dropped the pressure to see if they needed zeroing.....they were both 0.0 psig. Now don't forget you are 'zeroing' them to atmosphere which is technically wrong.....but it's a thing we've always done in the industry (myself included) but when we've had Reeferman, who used to do a lot of field testing for us, zero them in Calgary, his vacuum (would have been 200 microns or less) was pulled, he would only read 26-27"Hg on his gauges! He's at 3500' altitude so his 'zero' is basically 3"Hg compared to seal level. FWIW

Thanks I always have trouble explaining it. Going to have to remember this next time boss asks

[Doug Lockhart]

Thanks I always have trouble explaining it. Going to have to remember this next time boss asks

There is another way (listed in the manual) that is complicated to zero to absolute......so phone me and I'll go over it with you. (I have to admit I don't use it either as the "0" thing bugs me too....but it does tell you what the weather is doing since the last service call!!!)

[76olds]

The smallest size the clamps will work on is 1/2 or close to it. It tried on 1/4 and the clamp sensing probe wouldn't touch the pipe.

But that's what the Velcro straps are for. The velcro style will fit any small size pipe. The DC's come with the Velcro sensor style sensors. The scissor clamps are extra.

Thanks. Will hold off on the clamps for now.

[jpsmith1cm]

JP, my comment was not in "poor taste' or otherwise meant to be derogatory

.Just because I disagreed with the review doe not make me a horrid person. It was an opinion. Nothing more. Last time I looked every buddy was entitled to one. Being demonized over something as trivial as a Diggi Cool is taking the low road

I have my opinion and have a right to express it. The only thing in "bad-taste" was the comment that used that word...it was over zealous and not called for as my post was not intended to degenerate anyone. Nor was there any shots taken at Diggi Cool....strictly a person with an opposing view point.

You have an opposing viewpoint on an instrument that you have no experience with?

You didn't make any statement about the instrument or point out anything factual or incorrect about the review itself, you just dismissed the entire review as "sugary" implying that Brent made a biased review of the instrument.

Yet, on his other thread reviewing the SMAN, you posted;

Another SuperMAN is born.

Actually, re-reading that thread (which you'll notice that I made no Pro-DC comments in) I'm waiting with bated breath your your various reviews.

[hvac wiz 79]

Regardless,

[

Looks like a dc to me

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