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This is caused by residual refrigerant gas in the sensor port. Next time you see this happen, gently blow a little air into the port, and you'll see the gauge go to Hi-P immediately.

This is not...

There are not a lot of pieces....what did you discover?

Yes, that came across quite a bit more snarky than I intended. My apologies to Russell.

The zip case was specifically designed to throw over your shoulder so you can carry your other tools up the ladder at the same time. The scale needs no additional protection. I have been known to...

Hi, Anthony.

I didn't see this thread until today. I am the designer and manufacturer of the BluVac and the DS-220R scale. Thank you for your purchase.

I hope you like it. If you have any...

This sounds like a problem with the keypad. Call me on Monday to arrange repair.

klee7013,

The behavior you described is not normal. Keep an eye on it. If it happens again, call me at my shop and I'll repair it for you. The number is on my website http://accutools.com.
...

I appreciate the compliment, hvac5646. Thanks!

FYI, the BluVac sensor can be completely dried of alcohol immediately (within a few seconds) by pulling a vacuum on it.

Also, as you said, the BluVac sensor is rated for 500psi overpressure...

Sorry, Moparmyway. The freezer trick works only with the BluVac...

No, we private-label the scales for them as well. In exchange, we get access to their substantial distribution network.



Your original suggestion is still on my white board (along with dozens...

The UEI DMG100 and DMG200 gauges are built side-by-side with the BluVac and BluVac LTEs in our factory. Except for the color, they are the same.

Thanks, Gravity, but it makes no matter to me whether one buys a BluVac/BluVac LTE or a UEI DMG 200/100. For those who shop only at J-Mart, the yellow one is currently their only choice!

The BluVac port is a standard 1/4 male flare. It should interface with pretty much all standard 1/4 female flare connections with a rubber seal. The only connectors I would stay away from are...

You may get some interference with the schrader depressor. If so, just pull it out.

Looks good to me.

Hi, Jared.

It sounds like you have been putting excessive torsion on the plastic body of the BluVac when connecting/disconnecting the gauge. Over time, this will cause the plastic to stress and...

I don't toot my own horn much, but I thought this was worth sharing, especially in this thread.

I was contacted a few days ago by a university student doing post graduate work involving deep...

A sincere 'thank you' for the compliment!



The BluVac operates at a *very low* temperature compared to other gauges. This is one of the reasons why it has such a long battery life. The sensor...

Not entirely true. Yes, since the thermal conductivity sensors are exposed directly to the atmosphere being measure, all TC base micron gauges lose accuracy over time. But, the BluVac is the *only*...

As you indicated in your correction above, 945 to 1055.

As you indicated in your correction above, 945 to 1055.

The BluVacs' rated accuracy is +/- 5% (of reading) +/- 5 microns from 10°F to 122°F (-12°C to 50°C).

Additionally, the BluVacs can be recalibrated to factory specifications simply by placing it in...

Hi, Ice.

Looking at the Testo 557 datasheet, it rates vacuum accuracy as +/- 1% FS (Full Scale) +/- 1 digit (at 22C).

This is a helluva way to rate a micron gauge! I don't know what they...

You are correct, Juan. Which is one of the reasons the BluVac is special: you can recalibrate it to factory specifications yourself simply by placing it in the freezer.