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    #1

    Temperature humidity gauge

    Hello all – I want to start this thread to elicit potential other ways to watch out for temperature and relative humidity in your collection room. I am posting a picture of what I believe should be part of your first line of defense of protecting your collection. Currently I am using an indoor outdoor humidity digital gauge. I have put the outdoor sensor on the inside of my wall so that I can get a temperature difference from the inside room to the wall. The humidity gauge also assists me in letting me know the variation of humidity in my room.

    I would be interested to read other comments from the forum at large on what you are doing to protect your collection. Thanks...
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    Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group
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    #2
    What humidity is recommended?
    Marc

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      #3
      Marc - From my understanding and research there is no ideal relative humidity. But from what I have read that humidity should be stable between 30% to 50% and that it should be at the lower end of the 30%.

      Originally posted by Flak88
      What humidity is recommended?
      Marc
      Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group

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        #4
        I need one of those. Where did you purchase yours from? I usually run my dehumidifier at the driest setting possible most of the day during the summer and spring. In the fall and winter, my house is fairly dry. I average about a gallon of water a day out of my room. I live in Kentucky and the humidity is horrible in the summer time. Also, what does a unit like that cost?
        Arch

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          #5
          Arch - I picked mine up at Wal-Mart for around $20 dollars.

          Originally posted by NKOMO
          I need one of those. Where did you purchase yours from? I usually run my dehumidifier at the driest setting possible most of the day during the summer and spring. In the fall and winter, my house is fairly dry. I average about a gallon of water a day out of my room. I live in Kentucky and the humidity is horrible in the summer time. Also, what does a unit like that cost?
          Arch
          Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group

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            #6
            I think the stated humidity level is too dry, unless you are only trying to preserve medals or badges. If you have leather or wood in your collection, you should probably opt for a slightly higher humidity level. I like 55% - it is low enough to prevent rust, but high enough to keep things from drying out and cracking. Of course, if metal is all you have, then the dryer the better.

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              #7
              Craig - Thanks for the follow up post. You brought up a very interesting point. I have a follow up question to you and or other forum members who maybe able to answer my question? What do you think is a good range for humidity for paper documents?

              Originally posted by Craig Gottlieb
              I think the stated humidity level is too dry, unless you are only trying to preserve medals or badges. If you have leather or wood in your collection, you should probably opt for a slightly higher humidity level. I like 55% - it is low enough to prevent rust, but high enough to keep things from drying out and cracking. Of course, if metal is all you have, then the dryer the better.
              Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group

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                #8
                Temperature humidity gauge

                Paper items tend to react negatively to both high temperature and high humidity. Most museums try and keep the temperature for documents under 70 degrees F., and the humidity under 50%. Of course, there is always the problem of acidity in the paper to contend with as well, but that is another thread topic.... Mike

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                  #9
                  Mike - Thanks for the follow up post...

                  Overall there are a lot of variables with tempature and humidity that should be taken into consideration for our collections that can make your head hurt.

                  Originally posted by MikeB
                  Paper items tend to react negatively to both high temperature and high humidity. Most museums try and keep the temperature for documents under 70 degrees F., and the humidity under 50%. Of course, there is always the problem of acidity in the paper to contend with as well, but that is another thread topic.... Mike
                  Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group

                  Comment

                    #10
                    Temperature humidity gauge

                    Roger that Ralph. By spending a little bit of time here, however, many of us will pick up on some great pointers for protecting our collections. As you can already see, trying to display items composed of different properties (daggers next to uniforms, matched with pictures, autographs or other documents,) can create plenty of headaches for us all! Mike

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                      #11
                      Ralph to my understanding humidity should be between 40 and 60 degree. Here is an interesting website made by a forum member. It's about Pickelhaube helmets, but it is still interesting for other things I guess.

                      http://www.kaisersbunker.com/preservation/index.htm

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                        #12
                        Where did you find it at Walmart? I had to order mine online. Great tool.

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                          #13
                          Dallas - A good question. Since all the Wal-Marts are not set up the same, but just in case your is; I found my gauge near the animal food section against the left side of the wall. The gauge was for sure not in the electronics section. And there were at least three shelves of different type of gauges to chose from. It took me a few minutes to find the section when I was looking for mine...

                          Originally posted by Dallas
                          Where did you find it at Walmart? I had to order mine online. Great tool.
                          Somebody, after all, had to make a start. What we wrote and said is also believed by many others. They just don't dare express themselves as we did. Quote - Sophie Scholl - White Rose resistance group

                          Comment

                            #14
                            Temperature/Humidity Gauge

                            I went by the Walmart today looking for a card for my wife for Valentine's day. While there, I found the temp/humidity gauges over with the other thermometers and the florescent light bulbs. They had a couple of different ones. I picked up one for $6.78 that is digital and runs off a single AAA battery. I'll let you know how it works.... Mike

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                              #15
                              Great thread !
                              I bought mine just today. Temp (20.5) and humidity (50%) are stabile. I gues those are exellent conditions (leather, steel, paper, etc in my collection). It's great to live in Holland given the conditions (not to warm, not to cold)

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