For all of you Homebrewers out there...

[C_C]

Would you consider using this Digital Pressure Gauge in your setup?

www.mcmastercarr.com Item # 3834K21

The only difference I can find between this and the PSI-Tronix PG-5000 is the accuracy over the scale...what differences do you see?

www.psi-tronix.com Pressure Products/PG-5000


Thanks,
C_C

 

[DocRCH]

A friend of mine just purchase a digital guage fromwww.coleparmer.com

model number EW-6B111-50

it measures 0-5000 psi and lists for $114.95 USD

Check this one out also.

Robert:doctor:

 

[DocRCH]

Oops! The model no. for the Cole-Parmer economyguage is: EW-68111-50. They also have guages with 0.25% accuracy.

Robert:doctor:

 

[ericfine50]

A friend of mine has the cole palmer gauge and loves it. It is very cost effective and works great.

Eric

 

[WYDT]

Originally posted by DocRCH
Oops! The model no. for the Cole-Parmer economyguage is: EW-68111-50. They also have guages with 0.25% accuracy.

Robert:doctor:

Nice link! Thanks!

 

[Uncle Pug]

Accuracy.... how good is good enough?

The PSItronics PG5000 is .25% of full scale (10000psi) which means that is is good to 25 psi in the mid range, say 5000 psi.

The Mastercarr and Coleparmer gauges are 1% of full scale so the 0-5000 psi gauges are good to 50 psi and the 0-3000 are good to 30 psi.

Now lets say that in PP blending a 3000 psi jug of EAN32 you are going to add 420 psi of O2...

Using the above gauges, what is going to be your range of FO2?


BTW... Uncle uses a PSItroncis PG2000 at .25% so the measurement at midrange is good within 5 psi.

But I think I will pick up one of the Mastercarr or Colparmer gauges for my argon fill whip... they're close enough for that

 

[WYDT]

Originally posted by Uncle Pug
Accuracy.... how good is good enough?

The PSItronics PG5000 is .25% of full scale (10000psi) which means that is is good to 25 psi in the mid range, say 5000 psi.

The Mastercarr and Coleparmer gauges are 1% of full scale so the 0-5000 psi gauges are good to 50 psi and the 0-3000 are good to 30 psi.

Now lets say that in PP blending a 3000 psi jug of EAN32 you are going to add 420 psi of O2...

Using the above gauges, what is going to be your range of FO2?


BTW... Uncle uses a PSItroncis PG2000 at .25% so the measurement at midrange is good within 5 psi.

But I think I will pick up one of the Mastercarr or Colparmer gauges for my argon fill whip... they're close enough for that

My question is... would it be a consistent error or a random one? I mean if it was consistently 50psi over or under you could figure that out pretty quickly and adjust accordingly. If it were more random then that would be a hard thing to do. Anyone have experience with this??

DSAO!

 

[Uncle Pug]

Originally posted by WYDT
My question is... would it be a consistent error or a random one?

If it were consistent then it would be taken care of by the zero function and the gauge would be marketed as .000% error.

By definition the 1% error is unpredictable.

 

[Uncle Pug]

BTW thanks for reminding us to check Mastercarr....
I was going to get a Coleparmer until I saw this thread....
But I ordered the Mastercarr one yesterday.

 

[WYDT]

Originally posted by Uncle Pug

If it were consistent then it would be taken care of by the zero function and the gauge would be marketed as .000% error.

By definition the 1% error is unpredictable.

Good point!

DSAO!!