Hygrometer Calibration

[DesertRat]

Question for you all.
I purchased a humidipak calibration kit a few days ago. As you know it is supposed to hold a steady 75.5% RH inside the bag.

I placed two analog and one digital hygrometer(s) inside roughly 30 hours ago.

Reading on the digital is 64%.
Reading on analog #1 is 64%
Reading on analog #2 is 62%.

Which is more likely?
A. All three hygrometers are off even though they all read basically the same RH?
B. The humidipak is somehow off?

 

[MaxNoodle]

Do the salt test. Seeif that gives you a different reading. Make sure your ziplock is sealed, and put it inside another ziplock and seal that one just to make sure. Should take roughly 8 hours to get to 75%. My .02

~ t

EDIT TO ADD: also try doing 1 at a time. I don't think it makes a difference, but why not try it. You can test all three in less time than you have invested thus far.

 

[Sweetrice80]

Do the salt test. Seeif that gives you a different reading. Make sure your ziplock is sealed, and put it inside another ziplock and seal that one just to make sure. Should take roughly 8 hours to get to 75%. My .02

~ t

EDIT TO ADD: also try doing 1 at a time. I don't think it makes a difference, but why not try it. You can test all three in less time than you have invested thus far.

Though I agree with this statement, in some sense. The Boveda humidipak, are the most accurate way to calibrate an Hygrometer. Salt test is a rough estimate, but close. The only thing I can think of thats wrong is that you got the 65% pack, but you said it was 75% maybe more experts can chime in here. :thumbs:

 

[Macion Grey]

Same thing happened to me actually. Floats at 63% RH with a 75% Boveda Calibration kit. I found to be odd also.

 

[Gonnagal]

I did the salt test, placed them within 3 ziploc bags and found after 24 hours mine to be off by +2/3%

 

[MaxNoodle]

Your bovedas may be the subject - whether they are old or whatever the reason.

The salt test is a "controlled" and accurate test. If they are both off then you know its your hygro.

Again - only my .02 cents.

~ t

 

[tone-ny]

Your bovedas may be the subject - whether they are old or whatever the reason.

The salt test is a "controlled" and accurate test. If they are both off then you know its your hygro.

Again - only my .02 cents.

~ t

I've never heard this before. Here is a link to Viper's page on the product in question. Boveda Test Pack

 

[MaxNoodle]

Your bovedas may be the subject - whether they are old or whatever the reason.

The salt test is a "controlled" and accurate test. If they are both off then you know its your hygro.

Again - only my .02 cents.

~ t

I've never heard this before. Here is a link to Viper's page on the product in question. Boveda Test Pack

read the first page of this forum...the salt test is a sticky there...

http://www.cigarpass.com/guide_hygro_salt_test.shtml

 

[tone-ny]

Your bovedas may be the subject - whether they are old or whatever the reason.

The salt test is a "controlled" and accurate test. If they are both off then you know its your hygro.

Again - only my .02 cents.

~ t

I've never heard this before. Here is a link to Viper's page on the product in question. Boveda Test Pack

read the first page of this forum...the salt test is a sticky there...

http://www.cigarpass.com/guide_hygro_salt_test.shtml

I'm not disputing the validity of the salt test. I am questioning your rationale on the Boveda test pack!

 

[MaxNoodle]

Your bovedas may be the subject - whether they are old or whatever the reason.

The salt test is a "controlled" and accurate test. If they are both off then you know its your hygro.

Again - only my .02 cents.

~ t

I've never heard this before. Here is a link to Viper's page on the product in question. Boveda Test Pack

read the first page of this forum...the salt test is a sticky there...

http://www.cigarpass.com/guide_hygro_salt_test.shtml

I'm not disputing the validity of the salt test. I am questioning your rationale on the Boveda test pack!

I'm just saying it may be a bad pack for "whatever" reason...thats all - I'm not saying its wrong - but for free you can test it with the salt test to make sure, thats why I said, do BOTH, and if the hygro is still reading wrong, your problem is in the meter, or if the salt test gives you75% then there is something wrong with the pack, mislabeled maybe, who kows what could go worng. I'm sure you bought something at some point, and took it home to find out the wrong thing was in the box or broken...thats my rationale, thats all...

 

[NullSmurf]

I have to side with Max. I've never used Boveda, but I've done many salt tests. Works every time.

 

[tone-ny]

I have to side with Max. I've never used Boveda, but I've done many salt tests. Works every time.

I guess my reading comprehension is lacking somewhere. I did not state that there was anything wrong with the salt test in any of my posts. Simply stated I was standing by the Boveda as an accurate tool!

 

[NullSmurf]

I have to side with Max. I've never used Boveda, but I've done many salt tests. Works every time.

I guess my reading comprehension is lacking somewhere. I did not state that there was anything wrong with the salt test in any of my posts. Simply stated I was standing by the Boveda as an accurate tool!

Mine is not a response to you at all. Its more of a "why the heck Boveda when a table salt test also works great and its free. You aren't one of those weirdos who actually reads the instructions on those things, are you?

 

[tone-ny]

I have to side with Max. I've never used Boveda, but I've done many salt tests. Works every time.

I guess my reading comprehension is lacking somewhere. I did not state that there was anything wrong with the salt test in any of my posts. Simply stated I was standing by the Boveda as an accurate tool!

Mine is not a response to you at all. Its more of a "why the heck Boveda when a table salt test also works great and its free. You aren't one of those weirdos who actually reads the instructions on those things, are you?

Bruce, yes after many years as a quality assurance inspector where we enforced tech data adherance(sp) it is a hard habit to break!

 

[Spad31]

A couple questions for the old hands here, then...

I just got the Western Caliber III digital, and the instructions on it specifically say to NOT do a salt test on it. The advert for the Boveda shows a digital hygro in the ad (and mentions "the salt test")...is there a reasonable difference between digital hygros? I did the salt test on the Little Havana and the cheapo Hygro that came with the Humidor, and used the results to set the analog (it read 1 deg high). The Little Havana read about 6 degs high (but is not adjustable). Do I just trust the Caliber III? What are the negative effects of doing the salt test on a digital Hygrometer? Salty air? Corrosive?

I am but a Padawan among Jedi...

T

 

[northernmoris]

A couple questions for the old hands here, then...

I just got the Western Caliber III digital, and the instructions on it specifically say to NOT do a salt test on it. The advert for the Boveda shows a digital hygro in the ad (and mentions "the salt test")...is there a reasonable difference between digital hygros? I did the salt test on the Little Havana and the cheapo Hygro that came with the Humidor, and used the results to set the analog (it read 1 deg high). The Little Havana read about 6 degs high (but is not adjustable). Do I just trust the Caliber III? What are the negative effects of doing the salt test on a digital Hygrometer? Salty air? Corrosive?

I am but a Padawan among Jedi...

T

I have 4 Cal. III's. They are all dead on and read the same. I love them and wouldn't change to anything else.

 

[Spad31]

A couple questions for the old hands here, then...

I just got the Western Caliber III digital, and the instructions on it specifically say to NOT do a salt test on it. The advert for the Boveda shows a digital hygro in the ad (and mentions "the salt test")...is there a reasonable difference between digital hygros? I did the salt test on the Little Havana and the cheapo Hygro that came with the Humidor, and used the results to set the analog (it read 1 deg high). The Little Havana read about 6 degs high (but is not adjustable). Do I just trust the Caliber III? What are the negative effects of doing the salt test on a digital Hygrometer? Salty air? Corrosive?

I am but a Padawan among Jedi...

T

I have 4 Cal. III's. They are all dead on and read the same. I love them and wouldn't change to anything else.

I'll take that endorsement.

 

[cpprhead59]

Desert Rat - How did you make out with your problem?

I just got a new hygro and boveda, I also threw in a 5 month old digital hygro I have that always seems to be off too and I have been getting the same results as you have.

Both read 64% humidity and are 69*. I am stumped. The older hygro was dead on the first time I did the test with a boveda pack but seemed to be losing its accuracy as the months went on.

I have two analogs that I also use in other humi's that have been perfect with the boveda test. I used them to cross-check my digitals and I find that my older digital to be 6-7% lower than what my analog says in the humi.

I don't get whats going on at all.

 

[DesertRat]

Desert Rat - How did you make out with your problem?

I just got a new hygro and boveda, I also threw in a 5 month old digital hygro I have that always seems to be off too and I have been getting the same results as you have.

Both read 64% humidity and are 69*. I am stumped. The older hygro was dead on the first time I did the test with a boveda pack but seemed to be losing its accuracy as the months went on.

I have two analogs that I also use in other humi's that have been perfect with the boveda test. I used them to cross-check my digitals and I find that my older digital to be 6-7% lower than what my analog says in the humi.

I don't get whats going on at all.

To be honest I've been too busy to look into it further. I figureif the hygro's are correct then my humi is at 65%, if the Boveda is correct then the humi is at 75% either of which is acceptable in the short term. I want to buy a higher quality, adjustable digital hygro and do both a salt test and Boveda pack and see the results. I just need an 8th day in the week.