can I use canning salt For calabration

[Intheswamp]

Quote:
<chuckle> Well, it'll be interesting to see the new results...it would be *really* interesting if it comes out the same as the first test, eh???

I posted a cut-n-paste of an article that speaks a little about how the method works...it might be an interesting read for you.
Calibrate Your Hygrometer - Two Methods

Best wishes,
Ed

 

[joebryant]

Quote:
<chuckle> Well, it'll be interesting to see the new results...it would be *really* interesting if it comes out the same as the first test, eh???

I posted a cut-n-paste of an article that speaks a little about how the method works...it might be an interesting read for you.
Calibrate Your Hygrometer - Two Methods

Best wishes,
Ed

I'm really starting to question these other methods, especially when they say something like, "...your hygrometer should read in the 75% range. I would perform this test various times to get the average, and use this as the tuning number. (Ex: 70% = 5 points, 74% = 1 point, 72% = 3 points. 9/3=3. Adjust by 3 percent.)..."

I think I'm going to stick to the DVM's method, not the cigar people's method; they sound too iffy. I know that the DVM's method works.

 

[Intheswamp]

Quote:
<chuckle> Well, it'll be interesting to see the new results...it would be *really* interesting if it comes out the same as the first test, eh???

I posted a cut-n-paste of an article that speaks a little about how the method works...it might be an interesting read for you.
Calibrate Your Hygrometer - Two Methods

Best wishes,
Ed

I'm really starting to question these other methods, especially when they say something like, "...your hygrometer should read in the 75% range. I would perform this test various times to get the average, and use this as the tuning number. (Ex: 70% = 5 points, 74% = 1 point, 72% = 3 points. 9/3=3. Adjust by 3 percent.)..."

I think I'm going to stick to the DVM's method, not the cigar people's method; they sound too iffy. I know that the DVM's method works.

Whatever blows your whistle. To me, your quote above of the article only reinforces their method...they are giving a more precise test by doing multiple tests and averaging out the results. The DVM doesn't mention doing multiple tests...apparently just to rely on the single test which leaves room for much error.

As for the "cigar people's" method sounding iffy... These folks store thousands of dollars worth of cigars in their humidors for extended periods of time and humidity is a very important element in their storage. I would think they have an inkling of what's going on regarding hygrometers.

I won't be persuing this discussion with you anymore as it appears to be a waste of time for both of us.

But, whatever the case, have a nice day.
Ed

 

[jayburd]

When a chicken lays on a clutch and she is in a dry barn say in the middle of august. Or say in a high moisture coop in april. How does the hen control the moisture? ACURITE hydrometer has been in bag for 2 hours and is up to 68%. Springfield is 39%. What a waste of money

these should be right from the factory.

Has anybody just put a certian size cup in a curtain size bater and called it good enough.

 

[joebryant]

Quote:
I'm really starting to question these other methods, especially when they say something like, "...your hygrometer should read in the 75% range. I would perform this test various times to get the average, and use this as the tuning number. (Ex: 70% = 5 points, 74% = 1 point, 72% = 3 points. 9/3=3. Adjust by 3 percent.)..."

I think I'm going to stick to the DVM's method, not the cigar people's method; they sound too iffy. I know that the DVM's method works.

Whatever blows your whistle. To me, your quote above of the article only reinforces their method...they are giving a more precise test by doing multiple tests and averaging out the results. The DVM doesn't mention doing multiple tests...apparently just to rely on the single test which leaves room for much error.

As for the "cigar people's" method sounding iffy... These folks store thousands of dollars worth of cigars in their humidors for extended periods of time and humidity is a very important element in their storage. I would think they have an inkling of what's going on regarding hygrometers.

I won't be persuing this discussion with you anymore as it appears to be a waste of time for both of us.

But, whatever the case, have a nice day.
Ed

Yep, whatever works for us. All I know is that the DVM's directions worked perfectly for me on three hygrometers, and that's good enough for me.
Have a nice day.

 

[Intheswamp]

Quote:
The hen and humidity...one of God's mysteries, perhaps?

As for the hygrometers...if either one is so far off as to be beyond your quality control expectations carry it back to Wallyworld...they love to see you smile, remember?

Here is a link to a little test(?) I did to some thermometer/hygro units. I never really completed it, though I may in the future tinker with it some more. It might give you some food for thought...or at least be a big time killer to read.

Wallyworld Digital Thermometers/Hygrometers

Ed

 

[jayburd]

results are in


Test with 1/2 cup water 1/4 cup salt.
only checked Acurite Humidity 69%


Test with pastey salt
Acurite temp 73.2 out
73.2 in so im thinking the temp is close
Humidity 68%

Springfield 73.9 temp
Humidity 40%


I guess the Springfield will go back to walmart
The acurite seems good against my dial thermometer ,temp wise.
So I should read 43% on Acurite for 50%?

 

[Intheswamp]

Yeah, that Springfield seems way off the mark.

Interesting observation that both tests with the ingredient amounts reversed basically showed the same results. Interesting. You wouldn't be interested in doing another round of the test would you?

Anyhow, looking at your results for the Acurite it appears to be reading 6% low on the gauge. Thus, you could say that when you read 43% on the meter that you need to add 6% more which would result in a "understood" RH of 49%.

Another way to look at it, though, is that 69 is about 9% less that 75. Thus, if you figure the gauge is reading 9% low, then at a reading of 43%RH, the actual RH could be ~47%....43x1.09=46.87 or almost 47.

Depends on which way you look at it. Being as it's only going to be 2-3 percentage points difference I would probably opt for the simplest method of just adding the 6% to the gauge reading.

One last thing...you might want to test your dial and Acurite against a medical thermometer to verify their temperature measuring precision, not just that the dial and acurite are agreeing with each other...two wrongs don't make a right.

Best wishes,
Ed