micron gauge

[allenb2626]

Wanting a micron gauge and does everyone have there's set up.

[1000535Fitter]

Model 14571 is an analog micron gauge with dual power source, will run off of 2 D batteries or can be plugged into any 110V outlet. These arent the cheapest gauge but it is reliable as all get out.

[AirTechMech]

Accutools BluVac or BluVac LTE is a hands down winner.

http://www.trutechtools.com/Accutools_bymfg_62-4-1.html

[Tech Rob]

Model 14571 is an analog micron gauge with dual power source, will run off of 2 D batteries or can be plugged into any 110V outlet. These arent the cheapest gauge but it is reliable as all get out.

Another vote for the Thermal Engineering Gauge. Anything else is a disposable toy.

[marvin]

the blu vac is the ultimate in micron gauges in my opinion.
i never thought i would park my mercury manometers but did shortly after
using the blu vac a few times.

[walterc]

There can be only one!
The one, the only- Yeller Jacket!


http://img.photobucket.com/albums/v89/daddo/microngaugecountryside003.jpg






Actually I'm getting the Blur-Vac next time around- everyone raves about it so much.

[AirTechMech]

Another vote for the Thermal Engineering Gauge. Anything else is a disposable toy.

Yes I once thought the same but I retired my Thermal Engendering for BluVac and am very pleased I did so. A world of difference between the two.

[rufus819]

I have the JB supernova, works well however you need to get Tee for it to work. the supco micron gauge doesn't require one but i've heard many complaints about it from other tech's in my company.

http://www.johnstonesupply.com/storefront/renderImage.image?imageName=WEB_H27-110cl_EPS.jpg&width=407&height=268&padding=0

[jpsmith1cm]

:ditto: on the BluVac.

The Thermal Engineering gauge isn't even in the same ballpark as the BluVac.

Had them on the same system with a SMALL leak. BluVac caught it in seconds. I'm still waiting on the Thermal...

[1000535Fitter]

JP, kind of surprised to hear that regarding the TE. I admit I also carry around a cheap CPS digital that I use fairly frequently because its so much smaller and easier to carry and it seems reliable enough but when require absolute certaint on a deep vacuum, I go down to the truck and pull out the TE gauge, make sure it's calibration is correct, and see what's actually happening in the system. The analog dial makes understanding what's happening in the system alot easier IMHO.

[chuckcrj]

Go to YouTube and watch the videos by user 10pascone

He has some excellent comparisons of Bluvac and several other brands.

[ga-hvac-tech]

There can be only one!
The one, the only- Yeller Jacket!


http://img.photobucket.com/albums/v89/daddo/microngaugecountryside003.jpg






Actually I'm getting the Blur-Vac next time around- everyone raves about it so much.

I agree, however I have the newer 69075. Been reliable since 2007, and the tray to the right holds a few gadgets I use from time to time.

With any micron gauge, do not let pressure hit the sensor... they do not like that, and are expensive.

[jpsmith1cm]

JP, kind of surprised to hear that regarding the TE. I admit I also carry around a cheap CPS digital that I use fairly frequently because its so much smaller and easier to carry and it seems reliable enough but when require absolute certaint on a deep vacuum, I go down to the truck and pull out the TE gauge, make sure it's calibration is correct, and see what's actually happening in the system. The analog dial makes understanding what's happening in the system alot easier IMHO.

I was doing a tool review on the BluVac and did a side by side on a small sandwich table I was working on.

I knew that there was a leak, but wanted to see the difference between the two units.

Hooked them up to a Tee and let the pump fly.

Got a decent vacuum (for a leaker) and then isolated the pump and sat back.

The BluVac responded INSTANTLY. The Thermal was very slow to respond.

I repeated the test on other units and had the same results.

[jpsmith1cm]

I agree, however I have the newer 69075. Been reliable since 2007, and the tray to the right holds a few gadgets I use from time to time.

With any micron gauge, do not let pressure hit the sensor... they do not like that, and are expensive.

Not the BluVac......

[Tech Rob]

:ditto: on the BluVac.

The Thermal Engineering gauge isn't even in the same ballpark as the BluVac.

Had them on the same system with a SMALL leak. BluVac caught it in seconds. I'm still waiting on the Thermal...

BLUUUUUUU...VAAAAAC!!! UNGHHHHH... BLUUUUUU VAAAAAAAC!!!

http://bulk2.destructoid.com/ul/184845-nightZombies3.jpg

:LOL:

[jpsmith1cm]

BLUUUUUUU...VAAAAAC!!! UNGHHHHH... BLUUUUUU VAAAAAAAC!!!


:LOL:

At least I have actual field experience with the units that I'm comparing and am not dismissing something out of hand.

:.02:


:yes:

[ga-hvac-tech]

Not the BluVac......

The YJ put up with it for a long time... then quit.

We will see what the BlueVac does... :)

[ga-hvac-tech]

BLUUUUUUU...VAAAAAC!!! UNGHHHHH... BLUUUUUU VAAAAAAAC!!!

http://bulk2.destructoid.com/ul/184845-nightZombies3.jpg

:LOL:

Guess the BlueVac has gotta be good if zombies cheer it...

Speaking of zombies... did any of you see 'Sons of Guns' last week?

[Tech Rob]

At least I have actual field experience with the units that I'm comparing and am not dismissing something out of hand.

:.02:


:yes:
You've got me there. I don't have any first hand experience with the bluvac gauge. The only experience I have is with several *other* digital gauges, and none of them have even come close in terms of repeatability and reliability. Whenever I see as much chatter about something like I have with the bluvac, my skeptical nature causes me to reflexively dismiss it as hype. I will wait to see how many people are still using their bluvac gauges 5 years from now. There was one guy on here who said he was on his 3rd bluvac in about a year, yet he was still proudly proclaiming "I'll never use anything else!"

I was just trying to inject a little humor with the picture... No disrespect intended, you know I've got a great deal of respect for your knowledge and experience, JP... We just happen to disagree when it comes to digital gauges and micron gauges.

[Tech Rob]

I may be inclined to change my tune if Joey D sends me one to test, free of charge.

:limb:

[jpsmith1cm]

I may be inclined to change my tune if Joey D sends me one to test, free of charge.

:limb:

Sadly, I had to return the tester.

:(

[AirTechMech]

I will wait to see how many people are still using their bluvac gauges 5 years from now. There was one guy on here who said he was on his 3rd bluvac in about a year, yet he was still proudly proclaiming "I'll never use anything else!"

Well my BluVac is just a little over the one year mark and still performing flawlessly in the field for me. I retired my Thermal Engineering Super Vac Check-II, a CPS VG-100A and a JB DV-22N when I got the BluVac and I never looked back once I put them in comparison.

Accutools has really changed the standard when it comes to vacuum indicators with their unique technology. There simply is no other vacuum indicator now.

[chuckcrj]

Well my BluVac is just a little over the one year mark and still performing flawlessly in the field for me. I retired my Thermal Engineering Super Vac Check-II, a CPS VG-100A and a JB DV-22N when I got the BluVac and I never looked back once I put them in comparison.

Accutools has really changed the standard when it comes to vacuum indicators with their unique technology. There simply is no other vacuum indicator now.

I'm right at one year with mine as well. No complaints.

One thing I hated about the Thermal, it simply won't work in cold weather. I have used the Bluvac down to 0°F and it works flawlessly.

[jpsmith1cm]

You've got me there. I don't have any first hand experience with the bluvac gauge. The only experience I have is with several *other* digital gauges, and none of them have even come close in terms of repeatability and reliability. Whenever I see as much chatter about something like I have with the bluvac, my skeptical nature causes me to reflexively dismiss it as hype. I will wait to see how many people are still using their bluvac gauges 5 years from now. There was one guy on here who said he was on his 3rd bluvac in about a year, yet he was still proudly proclaiming "I'll never use anything else!"

I was just trying to inject a little humor with the picture... No disrespect intended, you know I've got a great deal of respect for your knowledge and experience, JP... We just happen to disagree when it comes to digital gauges and micron gauges.

I have a BS detector like that, too.

I initially dismissed digital gauges and such just like you.

But the sheer numbers of people and absolute vehemence with which they stood by them swayed me and I took the plunge.

[itsiceman]

allenb if you are still looking I was going to be selling my Thermal after I calibrate it with my BluVac.
Between that and the other repairs I made to the internal wiring it is better than new IMO.

[joeyd]

I may be inclined to change my tune if Joey D sends me one to test, free of charge.

:limb:

As much as I would love to send you a freebie, Tech Rob, what would I do without my detractors keeping these threads going? :grin2:

I've actually given a number of them away over the past 2 years for evaluation purposes...and the feedback has always been superlative. But, if it's all the same, I'd like to start making some money by selling some of them! Thanks for the thought, though.

[270wsm]

Which Bluvac are you guys using? The Standard one or the LTE? I'm thinking about buying one, just not sure which model.

[joeyd]

Which Bluvac are you guys using? The Standard one or the LTE? I'm thinking about buying one, just not sure which model.

Hi, 270wsm.

The BluVac and BluVac LTE are both built upon the same 'engine'. They each have the same speed and accuracy, both have the oil/calibration indicators, and can both be recalibrated to factory specs using your freezer.

The main differences between the BluVac and LTE is that the BluVac has additional "productivity" features, including a "leak rate" indicator, an ambient temperature indicator (to 0.1 C/F), and programmability (it allow you to automate the evacuation process). In addition, the BluVac has 0.1 micron resolution below 10,000 microns, where the LTE is 1 micron resolution throughout the entire range of 0 to 25,000 microns.

Which ever one you decide to buy, I stand by our gauges, and will help you with any problems you may encounter, to the best of my ability.

Thanks for your interest!

[jpsmith1cm]

Quick question, joeyd.

When the BluVac needs calibration, will it just quit like it does when it is oil contaminated or does it give an alert but continue to function?

[joeyd]

Quick question, joeyd.

When the BluVac needs calibration, will it just quit like it does when it is oil contaminated or does it give an alert but continue to function?

The oil sensor operates continuously, and will allow the gauge to function normally (with the OIL indicator on) until contamination becomes so extensive that proper operation cannot be guaranteed. Then the gauge gets locked out until it is cleaned.

The calibration check must be activated manually by pressing and holding the power key during power-on (as detailed in the owner's manual). Cal GOOD means the gauge is in calibration, Cal SOON means the gauge is operative, but calibration is not guaranteed. There is no lockout for calibration.

Slight oil contamination could make the calibration check indicate SOON. It is always a good idea to clean and dry the sensor (with alcohol, then pull a quick vacuum) prior to calibration, though this is not strictly necessary (the calibration process itself accounts for any changes in the sensor, including accumulated contamination).

[Tech Rob]

As much as I would love to send you a freebie, Tech Rob, what would I do without my detractors keeping these threads going? :grin2:

I've actually given a number of them away over the past 2 years for evaluation purposes...and the feedback has always been superlative. But, if it's all the same, I'd like to start making some money by selling some of them! Thanks for the thought, though.

That's ok... Your loss :grin2:

Maybe I will try the LTE one of these days. I don't need all of the other whiz-bang gimmickry. I want something that will show me a number when I hook it up and turn it on. That is all.

I don't get the need for an oil sensor or a leak rate indicator. If the thing is held upright, and you don't apply any pressure to it, there is no way oil is ever going to get in that sensor. If I hook up the micron gauge and it says 2000 microns, I'm going to do one of three things... That is 1) change the pump oil, 2) go get another cup of coffee, 3) pressurize the system and look for a leak. It's not like I'm going to sit there looking at the leak rate indicator going "Hmm, well, even though it's at 2000 microns, the bluvac says the leak rate is 0... I guess we can go ahead and charge it!"

No disrespect intended... Obviously you're doing something right if you've got half of this site brainwa... I mean using your gauge. :whistle:

I also want to add that I think it's very cool for you to get on this forum and interact with the folks using your tools, answering questions, and offering instantaneous support. That is very rare and quite invaluable these days!

[joeyd]

That's ok... Your loss :grin2:
Maybe I will try the LTE one of these days. I don't need all of the other whiz-bang gimmickry. I want something that will show me a number when I hook it up and turn it on. That is all.


And that is why we decided to release the LTE...there are many (most?) that don't need the features the BluVac provides.


I don't get the need for an oil sensor or a leak rate indicator. If the thing is held upright, and you don't apply any pressure to it, there is no way oil is ever going to get in that sensor.


You are a careful pro! Not all of your peers approach the job in the same way (no offense to anyone!). I've been making tools for 20 years, including micron gauges, and I've seen some of the things that can go wrong. I try to address these issues with each new product. Micron gauges are easily contaminated with oil, and most will just hum happily along without telling you there is a problem (and that the readings you are getting are inaccurate). Over-pressure events do occur...why should you have to send back a gauge for repair in that case? Since the vacuum sensor itself is exposed to ambient gas and it is operated at a high temperature, it can be expected to change over time. Why should you have to keep a second gauge on hand to confirm this, or have to send your gauge back to the factory for recalibration?



If I hook up the micron gauge and it says 2000 microns, I'm going to do one of three things... That is 1) change the pump oil, 2) go get another cup of coffee, 3) pressurize the system and look for a leak. It's not like I'm going to sit there looking at the leak rate indicator going "Hmm, well, even though it's at 2000 microns, the bluvac says the leak rate is 0... I guess we can go ahead and charge it!"


At least with the BluVac you can have confidence that the readings you are getting are accurate, and that any problems are not the result of a faulty gauge!



No disrespect intended... Obviously you're doing something right if you've got half of this site brainwa... I mean using your gauge. :whistle:


No offense taken! Believe it or not, I often get better feedback from skeptics than I do from the choir (though I do greatly appreciate my choir! :grin2:). I appreciate your comments more than you could know!


I also want to add that I think it's very cool for you to get on this forum and interact with the folks using your tools, answering questions, and offering instantaneous support. That is very rare and quite invaluable these days!

I have found that interaction here is very much a two-way street. I learn things that I wouldn't have otherwise discovered myself, and can use that to help me develop better products in the future. At the same time, I can help you all to get the most out of the existing products I offer. Thank you for your participation!

[Tech Rob]

You're welcome! Thanks for the well-thought out reponse! Does either one of the Bluvac gauges come with a case? A case with a nice little foam insert would be great. This is one of the things that REALLY burns my @$$ about other high-end instrument manufacturers... They don't offer most of their meters and instruments with cases, and if you want to buy one separately, bend over and grab your ankles!

[kdean1]

You're welcome! Thanks for the well-thought out reponse! Does either one of the Bluvac gauges come with a case? A case with a nice little foam insert would be great. This is one of the things that REALLY burns my @$$ about other high-end instrument manufacturers... They don't offer most of their meters and instruments with cases, and if you want to buy one separately, bend over and grab your ankles!

I keep my Bluvac in a compartment of my Appion Megaflow case. It also has a space where I keep my Nylog. I don't mess around when it comes to pulling a vacuum.
:cool:

[270wsm]

Joeyd, do they both have the same screen resolution? What is the warranty?

[joeyd]

You're welcome! Thanks for the well-thought out reponse! Does either one of the Bluvac gauges come with a case? A case with a nice little foam insert would be great. This is one of the things that REALLY burns my @$$ about other high-end instrument manufacturers... They don't offer most of their meters and instruments with cases, and if you want to buy one separately, bend over and grab your ankles!

We've had such requests already.

Currently, there is no case/pouch for the BluVac. We are working on a number of accessories for the BluVac/LTE, in addition to creating an evacuation "kit". I don't have any details or release dates at this time, but I will let you know when the info is available.

[joeyd]

Joeyd, do they both have the same screen resolution? What is the warranty?

If by "screen resolution" you mean the resolution of the micron reading: no, the BluVac has 0.1 micron resolution from 0 to 9,999.9 microns, and 1 micron resolution from 10,000 microns to 25,000 microns. The LTE is 1 micron resolution from 0 to 25,000 microns.

If you mean the 'physical' characteristics of the actual display, they both use the same blue-backlit LCD display.

Full details are available at:

http://accutools.com/index.php?page=products&subpage=bluvac

and

http://accutools.com/index.php?page=products&subpage=bluvacLTE

[jpsmith1cm]

You're welcome! Thanks for the well-thought out reponse! Does either one of the Bluvac gauges come with a case? A case with a nice little foam insert would be great. This is one of the things that REALLY burns my @$$ about other high-end instrument manufacturers... They don't offer most of their meters and instruments with cases, and if you want to buy one separately, bend over and grab your ankles!

I can see the BluVac sitting very nicely in a small Pelican case.

http://www.bhphotovideo.com/bnh/controller/home?O=&sku=257858&Q=&is=REG&A=details

Not exactly sure it would be that one in particular, but one very similar to it.

[1000535Fitter]

Joeyd... pardon my ignorance (as I have only been a registered user for about a 10 days now) but I don't quite understand your relationship with the BluVac. Do you (with your own two hands) actually manuacture the BluVac gauge or is this an instrument of your own engineering and design? I have this picture in my mind of you running service calls all day long, only to go home and sit at your garage/basement workbench, assembling micron gauges, one at a time, component by component all by hand, like a fine Swiss watch maker. Please correct me if I am painting an inaccurate picture. I have NEVER seen a BluVac micron gauge at any of the local refrigeration supply houses in the Milwaukee/Madison area. Additionally, I have never even heard a fellow technician mention the BluVac uge during our ocassional discussions about tools/equipment that every guy should get. I have also asked the Journeyman who teach night school at the union hall and my fellow 4th and 5th year apprentices if they have had any experiences with, or heard anything about the BluVac, but nobody is familiar with the gauge but all of us (apprentices and Journeymen both) are very interested in seeing one in action. I see from some of the previous posts, guys haven't been shy about asking for a sample, but I am wondering if it is possible to obtain a BluVac micron gauge so that I can take the gauge to the hall and show fellow classmates and my teachers how the gauge stacks up against the other products on the market. I could also take it to my work and introduce it to service guys to get their thoughts on it. I work for Advantage Refrigeration, the largest commercial refrigeration/supermarket install and service company in Wisconsin. We always have techs asking for quality vacuum gauges but are purchasing department never knows which to buy. So if I can give tell them that the BluVac gauge is the best on the market on, then we would purchase large quantities for all of service techs

[1000535Fitter]

Thanks and sorry for the long post!
Mike
UA Local 601
Milwaukee

[joeyd]

Joeyd... pardon my ignorance (as I have only been a registered user for about a 10 days now) but I don't quite understand your relationship with the BluVac. Do you (with your own two hands) actually manuacture the BluVac gauge or is this an instrument of your own engineering and design? I have this picture in my mind of you running service calls all day long, only to go home and sit at your garage/basement workbench, assembling micron gauges, one at a time, component by component all by hand, like a fine Swiss watch maker. Please correct me if I am painting an inaccurate picture. I have NEVER seen a BluVac micron gauge at any of the local refrigeration supply houses in the Milwaukee/Madison area. Additionally, I have never even heard a fellow technician mention the BluVac uge during our ocassional discussions about tools/equipment that every guy should get. I have also asked the Journeyman who teach night school at the union hall and my fellow 4th and 5th year apprentices if they have had any experiences with, or heard anything about the BluVac, but nobody is familiar with the gauge but all of us (apprentices and Journeymen both) are very interested in seeing one in action. I see from some of the previous posts, guys haven't been shy about asking for a sample, but I am wondering if it is possible to obtain a BluVac micron gauge so that I can take the gauge to the hall and show fellow classmates and my teachers how the gauge stacks up against the other products on the market. I could also take it to my work and introduce it to service guys to get their thoughts on it. I work for Advantage Refrigeration, the largest commercial refrigeration/supermarket install and service company in Wisconsin. We always have techs asking for quality vacuum gauges but are purchasing department never knows which to buy. So if I can give tell them that the BluVac gauge is the best on the market on, then we would purchase large quantities for all of service techs

Hi, Mike.

I am a founding partner of Core Enterprises, Inc. (since 2001), the developer and manufacturer of the AccuTools line of electronic HVAC tools:

http://accutools.com

Yes, I did start the company in my garage, but we moved to our Coral Springs, Florida factory many years ago.

Our tools are developed at our factory and many, including the micron gauges, are manufactured here as well. I am involved mostly in new product development, but many times I hang out in manufacturing and help where I can (I am a QC nut and insist the everything ships perfect!).

The AccuTools line is relatively new (2005), and the BluVacs themselves were released in October of 2010, after 8 years of development.

For much of our history, we have sold many thousands of product in Europe, much of it private labeled. Getting into distribution in the US is much more difficult, though we are beginning to make inroads.

If it interests you, we have an Education Support Program where we can supply Accutools products to accredited HVAC schools, teachers, and students at a substantial discount. Please see:

http://accutools.com/index.php?page=education

For quantity discounts on gauges, please make your request through our website:

http://accutools.com/index.php?page=contact

Thanks for your interest!

[270wsm]

If by "screen resolution" you mean the resolution of the micron reading: no, the BluVac has 0.1 micron resolution from 0 to 9,999.9 microns, and 1 micron resolution from 10,000 microns to 25,000 microns. The LTE is 1 micron resolution from 0 to 25,000 microns.

If you mean the 'physical' characteristics of the actual display, they both use the same blue-backlit LCD display.

Full details are available at:

http://accutools.com/index.php?page=products&subpage=bluvac

and

http://accutools.com/index.php?page=products&subpage=bluvacLTE

Yes I was talking about the display. By looking at the pictures on Trutechtools website, they seem to have different backlight and clarity. May just be the photo.

[270wsm]

Is the features of the Bluvac worth the extra $70 over the Bluevac LTE?

[chuckcrj]

Is the features of the Bluvac worth the extra $70 over the Bluevac LTE?

In my opinion, yes. After getting used to the leak rate indicator, I would hate to be without it.

[ibrac54]

Model 14571 is an analog micron gauge with dual power source, will run off of 2 D batteries or can be plugged into any 110V outlet. These arent the cheapest gauge but it is reliable as all get out.

I have only used the Thermal model14571 and found that it works very well. We have had a few problems in the last year with the thermistors going bad for some reason though. After reading this thread I am really intrigued with the blu vac! Might have to try one.

[270wsm]

In my opinion, yes. After getting used to the leak rate indicator, I would hate to be without it.

How does the leak rate indicator work?

[chuckcrj]

How does the leak rate indicator work?

It tells you how many microns per second (in tenths) that the reading is moving up or down. Easy to tell when the evac rate, or leak rate is slowing down or speeding up. You can tell at a glance whether the Micron level is rising or falling.

[uhPrintUs]

...

One thing I hated about the Thermal, it simply won't work in cold weather. I have used the Bluvac down to 0°F and it works flawlessly.

I agree regarding the Thermal and cold weather. It took me awhile to figure out the problem and it was quite frustrating to arrive at the job site on mornings when the temp was around 40 degrees F and see my micron reading was worse than it was the previous afternoon.

I've been using the Yellow Jacket digital that indicates zero to atmospheric for a few years now and so have several co-workers. I never heard of the Bluvac until just now. I will admit if you put half a dozen Yellow Jackets on the same system, they all give a different reading until you get close to the desired vacuum level.

[270wsm]

Well i just ordered a BluVac. Are you guys using a black vacuum rated hose to hook it up or what?

[jpdc]

I'm also thinking of getting one. I'm thinking what is the most reliable way of evacuating a system. I mostly do residential units. Anyone have pics? Thanks

[kdean1]

Well i just ordered a BluVac. Are you guys using a black vacuum rated hose to hook it up or what?
Good move! I think you'll be very pleased with it.
I don't have a 1/4x1/4 vacuum hose and I found standard refrigeration hose wasn't reliable. So I used a short piece of 1/4" copper tubing and put a flare nut on each end. I have to use a wrench to tighten them but they're solid.

[va-sawyer]

I have a Bluvac on its way also. Should be here later today. Never heard of them till last week. Did a Google for 'Torr guage' and found the Tool & Equipment section here. Spent 3 nights in a row, reading and watching videos and LEARNING! Was most impressed by reading posts from Joeyd and the videos from Pascone10. Having access to the mind of the inventer is what finally pushed me to part with the money. Will have to redo my complete vac setup, but looking foward to it. Thank you to all that have posted on the subject.
Rick

[valdelocc]

I agree regarding the Thermal and cold weather. It took me awhile to figure out the problem and it was quite frustrating to arrive at the job site on mornings when the temp was around 40 degrees F and see my micron reading was worse than it was the previous afternoon.

I've been using the Yellow Jacket digital that indicates zero to atmospheric for a few years now and so have several co-workers. I never heard of the Bluvac until just now. I will admit if you put half a dozen Yellow Jackets on the same system, they all give a different reading until you get close to the desired vacuum level.

take a minute and read the Thermal manual, there is "secret" cold weather calibration ritual:grin2:
I have used my Thermal in well bellow freezing weather with no problems.

now I'm in trouble with the Bluevac zombies :grin2:

[itsiceman]

I have a 14571. My sensor cools down after you do that.
Well below freezing would require heating up the sensor like it says then keeping it warm in your hand for constant operation otherwise the reading drifts off as the temp of the sensor cools off again.
http://www.usmegastore.com/assets/product/ACC/accutools-a10474-bluvac-digital-vacuum-gauge/image.150x150 http://i13.photobucket.com/albums/a270/smurfmidgetninja/zombie.gif

[chuckcrj]

take a minute and read the Thermal manual, there is "secret" cold weather calibration ritual:grin2:
I have used my Thermal in well bellow freezing weather with no problems.

now I'm in trouble with the Bluevac zombies :grin2:

Yes, I know the "secret" cold weather calibration rotual, lol.

I just never got consistent results.

[va-sawyer]

My new guage arrived this afternoon. Had other stuff to do, so couldn't "play" with it till this evening.
I am now confirmed as a "BluVac Zombie".

Rick

[va-sawyer]

I really like this tool a lot. I think it is worth the extra cost compared to the LTE. The rate indicator is the most useful info it gives you. Suck it down to a given micon level and close the VCRT. As the pressure increases ( and it WILL increase ), watch the rate as it passes through a set number about 15 to 30 seconds later.
Example: Vac to 500 and close VCRT. Note the rate as it passes through 650. The rate is decreasing as the pressure rises unless you have a leak, but is it moisture and how much is left ? Vac back down to 500 and again shut off the VCRT. This time as it is passing through 650 the rate is much lower, so you can see that you are making progress. Easy to see how much hoses are off gassing and if they are getting better.

When you have things in a steady state, just gripping the guage hose fitting with your fingers can cause a slight reading change due to body heat.

The specs say 300 hrs of battery life, but I got mine on Tuesday, and the battery died Saturday early PM. I was testing it a lot, but if I had left it on the whole 5 days, that still wouldn't be 125 hrs. It has a Lithium 9V battery in it now. We will see how long that lasts.

To the manufacture...... as a few others have stated, a fitted case would be nice to have. I would also like to see a vac rated Female to Female angled metal adapter included with the unit.
One small problem I had with quality...... The end of the flare had very rough plating and a 'ding' on one side of the flare cone. I had to sand with 400 and 1000 grit paper to get an acceptable leak rate when attached directly to the end of my Appion VCRT and the valve closed. I have it down to about 1.5 microns/sec at about 500 microns, which I consider pretty good considering how little volume that is( oiled o-ring, no Nylog).

You really can see as moisture boils off by watching the numbers zip up and down. Again, the rate indicator is the best way to see progress. The program feature is useful when moisture is present, because you can set a micron level and time you want below that level. As the pressure rises above the set point due to moisture, the timer stops and starts again once the reading is back below setpoint. You want 15 minutes below 500 microns ? It gives you 15 minutes below 500 microns.... even if it takes 30 minutes from the first time it passes below 500.

Others here have stated that using a BluVac will change how you think about doing evacuations. I was doing that before getting the guage, due to threads I have read about using this unit. Seeing the numbers change in real time while trying different setups and conditions is an education on a different level.


Overall, I would rate this tool at about 9 out of 10 points. Add a case and adapter and it would be pushing 10.

Rick

[joeyd]

I really like this tool a lot. I think it is worth the extra cost compared to the LTE. The rate indicator is the most useful info it gives you. Suck it down to a given micon level and close the VCRT. As the pressure increases ( and it WILL increase ), watch the rate as it passes through a set number about 15 to 30 seconds later.
Example: Vac to 500 and close VCRT. Note the rate as it passes through 650. The rate is decreasing as the pressure rises unless you have a leak, but is it moisture and how much is left ? Vac back down to 500 and again shut off the VCRT. This time as it is passing through 650 the rate is much lower, so you can see that you are making progress. Easy to see how much hoses are off gassing and if they are getting better.

When you have things in a steady state, just gripping the guage hose fitting with your fingers can cause a slight reading change due to body heat.

The specs say 300 hrs of battery life, but I got mine on Tuesday, and the battery died Saturday early PM. I was testing it a lot, but if I had left it on the whole 5 days, that still wouldn't be 125 hrs. It has a Lithium 9V battery in it now. We will see how long that lasts.

To the manufacture...... as a few others have stated, a fitted case would be nice to have. I would also like to see a vac rated Female to Female angled metal adapter included with the unit.
One small problem I had with quality...... The end of the flare had very rough plating and a 'ding' on one side of the flare cone. I had to sand with 400 and 1000 grit paper to get an acceptable leak rate when attached directly to the end of my Appion VCRT and the valve closed. I have it down to about 1.5 microns/sec at about 500 microns, which I consider pretty good considering how little volume that is( oiled o-ring, no Nylog).

You really can see as moisture boils off by watching the numbers zip up and down. Again, the rate indicator is the best way to see progress. The program feature is useful when moisture is present, because you can set a micron level and time you want below that level. As the pressure rises above the set point due to moisture, the timer stops and starts again once the reading is back below setpoint. You want 15 minutes below 500 microns ? It gives you 15 minutes below 500 microns.... even if it takes 30 minutes from the first time it passes below 500.

Others here have stated that using a BluVac will change how you think about doing evacuations. I was doing that before getting the guage, due to threads I have read about using this unit. Seeing the numbers change in real time while trying different setups and conditions is an education on a different level.


Overall, I would rate this tool at about 9 out of 10 points. Add a case and adapter and it would be pushing 10.

Rick

Thanks, va-sawyer, for the comments and your 9 of 10 rating!

Regarding battery life, please note that we rate the battery life as "up to 300 hours". This is, in fact, tested and confirmed, but the actual battery life is greatly dependent upon the conditions under which the gauge is used. For instance, using the backlight will greatly diminish battery life. In addition, operation at higher pressures, and lower ambient temperatures will also cause a battery life reduction. In any case, the BluVac will operate for at least twice as long as any other 9V operated gauge under similar conditions. A lithium battery will increase battery life by about 25%, but IMHO, will not be worth the extra cost unless you are generally using your BluVac at very low ambient temperatures (close to freezing or colder).

Also, we test each BluVac for vacuum leaks. The plating on the flare fitting is hard nickel -- purposely for superior wear performance under general use with connectors with rubber seals.

I look forward to any additional comments you may have.

Regards,

JoeyD

[va-sawyer]

JoeyD,

I got a battery life of more like 30 hrs, or less. Very little use of backlight and room temp or warmer. I would guess at least 1/2 of the time was below 3000 microns.

As for the plating on the flare, it was very rough with gouge like areas that I could see without the aid of my 10x lens. The plate was actually over the rough areas, so it had to be something at or before plating was done. I only sanded till I had a fairly smooth surface, so you can still see spots where the plate in the depressions is still there. If my unit was 1 in a thousand, then no problem, but you may want to just spot check a few with a 10x lens to verify.

A large part of my choosing to buy the BluVac, was from reading posts here that you had responded to. Please don't think that I'm complaining, as I really do like this unit A LOT! Just kinda wishing out loud if you know what I mean.
Rick

[joeyd]

I appreciate your comments! Wish out loud more often, please.

The 30 hours is much shorter than I expect. Was that with the battery we supplied? It's possible it was sitting on the shelf a while, they are susceptible to self-discharge over time. Let me know your experience with a new battery. My own internal test units typically run for weeks or months on one battery with intermittent usage.

FYI, least battery draw is in sleep mode at Hi-P. Worst case is Hi-P outside of sleep mode, with power usage dropping substantially as pressure decreases. Also, the calibration process uses substantial battery power.

I will take a look at our material wrt the connection surfaces.

Thanks again,

JoeyD


JoeyD,

I got a battery life of more like 30 hrs, or less. Very little use of backlight and room temp or warmer. I would guess at least 1/2 of the time was below 3000 microns.

As for the plating on the flare, it was very rough with gouge like areas that I could see without the aid of my 10x lens. The plate was actually over the rough areas, so it had to be something at or before plating was done. I only sanded till I had a fairly smooth surface, so you can still see spots where the plate in the depressions is still there. If my unit was 1 in a thousand, then no problem, but you may want to just spot check a few with a 10x lens to verify.

A large part of my choosing to buy the BluVac, was from reading posts here that you had responded to. Please don't think that I'm complaining, as I really do like this unit A LOT! Just kinda wishing out loud if you know what I mean.
Rick

[va-sawyer]

Yes, it was the supplied battery and that is why I just noted to low hours rather than harping about it. I also figured the battery could have arrived with partial charge. I haven't done a re-cal on it yet, and haven't seen it go into sleep mode either. If it is on, I'm running the pump or looking for leaks.

Put some Nylog on the port today trying to get a better seal with the VCRT. Still getting 1.1 micron/second rise with valve shut. Rate is constant from about 175 microns up to 1000 where I stopped the test. If I leave the ball closed and turn the pump back on, it doesn't change the rate, so I'm thinking the VCRT valve is good. There is a small amount of 'play' between the male port and guage body. Moving it doesn't seem to affect the rate either. Is it even possible to get a fairly steady reading around 500 microns with the BluVac directly on the end of the VCRT ? Note: side tap was sealed with Nylog and cap. Removing cap did not change leak rate either.

Rick

[joeyd]

...Is it even possible to get a fairly steady reading around 500 microns with the BluVac directly on the end of the VCRT ? Note: side tap was sealed with Nylog and cap. Removing cap did not change leak rate either.

I just realized that you are trying to hold a stable vacuum on an incredibly small volume. The results you are getting are *spectacular*. You've probably got as leak tight an assembly as humanly possible without going to "scientific" level hardware and hermetic seals! Even the smallest molecular leak is going to show that slow rise you are seeing...so I say everything looks fantastic. Once you apply it to an actual system with a real volume, and things are dry and tight, the vacuum rise should settle out to zero nicely.

Good job!

[va-sawyer]

JoeyD,

I have had it on a real system and couldn't get the rate to 'zero out' there either. I'm working with a small space on purpose to eliminate as many variables as possible. My goal is less than .3 micron/sec leak rate or better.
I need to prove my setup is tight before telling someone else that theirs is leaking. ( Sorry, but almost 30 years in Aviation means I don't trust anything till I see it myself.) I'll keep working on it and let you know what I find.

Rick

PS The dog in your avitar looks just like my Shepherd Samson, except Sam is now a bit older.

[itsiceman]

When I tested a capped off core remover and BluVac only it settled out in the 1500-2000 micron range but also at that small volume any change in temp would also change the reading up and down.

[va-sawyer]

itsiceman,

Yes, I noted in post 58 that in a steady state situation, I could affect the reading just by putting the guage fitting between my fingers. I figured it was responding to body heat. That is SENSITIVE !

I took both O-rings out of the end of my VCRT , cleaned them and coated with Nylog. Being careful to avoid dog hairs, :whistle: I put them back in and tried another test. I managed an average rate of .28 microns per second from 300 to 500 microns.

Worked the side of the flare cone on the guage with 1000 grit paper and now have it almost holding steady at 400 microns. I think that I'm going to call that close enough. Now onto my next stage of testing.......

Rick

[cy]

hmmm blue vac?

how much better than say Robinair 14830A thermistor micron gauge or Supco VG64?

[Legacy80]

I have this unit, it's a piece of ****. compared to the analog, this jb is very inconsistent.

I have the JB supernova, works well however you need to get Tee for it to work. the supco micron gauge doesn't require one but i've heard many complaints about it from other tech's in my company.

http://www.johnstonesupply.com/storefront/renderImage.image?imageName=WEB_H27-110cl_EPS.jpg&width=407&height=268&padding=0

[valdelocc]

I have this unit, it's a piece of ****. compared to the analog, this jb is very inconsistent.

I have compared the supernova with my thermal and they are almost identical in performance, the biggest disparity is the way they react to a loss of vacuum, the thermal is way faster than the supernova, I got used to it and it does no bother me at all.

[Legacy80]

Attempted to use my HB supernova this morning. The vac pump had been running over night, the supernova said I was at 2500 microns, I was 100% sure there were no leaks. Thought it might have been my pump, so I connected the supernova to just the pump, still only dropped to 2100. Got the trusty but bulky thermal vac guage out. Connected it to system.... 400 microns. This only the 4-5 time I tried to use the supernova. It might have worked properly the first time or two.