如何重复清洁Cal Kit组件

> {quote：title = wreeve写道：} {quote}>在上一篇文章中，我正在寻找85032B Cal Kit的替换负载。
我找到了我要找的东西，但是它们已经存放了一段时间在cal kit盒中，并且充满了用于在盒子上划线的分解泡沫。
>>分解的泡沫很粘，不能吹或刷掉 - 它只会变成更大，更粘的混乱。
是的，我知道手册中说使用压缩空气和异丙醇，但这是普通的日常清洁。
如何重复清洗分解的粘性泡沫？
>>我应该将组分浸泡在异丙醇中还是有更好的化学品？
或者，我根本不应该使用任何化学品吗？
>>任何建设性的建议将不胜感激.....这是一个多么不寻常的问题 - 我从来没有听说过任何人在清理连接器之前遇到问题！
泡沫是可怕的，我不敢说，我从来没有太成功地从3.5毫米连接器中取出它。
N和APC7问题较少。
我怀疑金也微溶于泡沫中。
这就像一颗等待灭绝的定时***。
当然，如果一些白痴存储没有盖帽的连接器，那就更糟了。
和你一样，我尝试过IPA，发现它对溶解这种泡沫效果不佳。
我还尝试用超声波清洗器进行IPA，尽我所能，使其远离电介质支架。
但超声波清洁器的本质意味着可能是不可能的。
然后我尝试在超声波清洁器中加热IPA，这也不起作用。
丙酮确实溶解了泡沫，但我认为它很有可能造成其他损害。
即使你将液体从电介质支架上移开，我怀疑蒸汽可能会给支架带来问题，因为丙酮会溶解大多数塑料。
旧的校准套件手册，如我所附的APC7 / 7mm 85050A手册，建议使用四氯化碳（CCL4），尽管四氯化碳可能*更好，但由于安全问题，四氯化碳更难控制。
明智地使用清洁连接器所需的数量，它不会对您的健康或大气的健康产生重大影响。
但是我不知道四氯化碳会溶解这种泡沫 - 我只是建议它可能值得一试，如果你不在一家公司工作，健康与安全官员会想到任何人使用碳
四氯化碳。
我怀疑是德科技中的任何人使用CCL4 - 或者如果他们这样做，它的使用只会偶尔来自他们保留的秘密抽奖！
我有一个旧的85052B校准套件，并且永远无法正确清洁某些部件上的泡沫，因此在eBay上将它们作为“零件或维修”出售，照片显示泡沫。
香港的一位经销商赢得了拍卖并买下了它们。
我读到安捷伦清洁棒，9301-1243非常好，并且尝试过它们，它们是我发现的最好的。
但它们非常昂贵。
它们由伯克希尔公司生产，零件号为LT170183.15，每包100个。
（安捷伦相当愚蠢地将原始制造商的名称和型号留在包里）。
我联系了Berkshire，我的询问已经过去了他们的英国经销商，他们以我从安捷伦购买的包装价格的三分之一左右的价格出售。
但是当我试图购买它们时，最小订单数量是一个盒子，其中有30包100个。
我最后一包100包，所以鉴于我50岁，我使用30包的几率接近于零。
我不确定当我用完时我会做什么 - 从Keysight购买一包，或支付10倍，但得到30倍的数量，并希望卖掉其余的。
购买二手3.5毫米连接器似乎是一场噩梦。
eBay上的卖家jewels6410通常有3.5毫米的组件，她确实知道如何测量它们。
她的价格也很不错。
请注意，可以更换85052B校准套件中无槽3.5 mm连接器上的母触点。
你需要一个特殊的工具，插件并不便宜，但我知道美国的一个实验室引用了100美元/联系方式。
但是当然BTW，85033E和85033D套件中使用的开口和短路看起来与85052B中的相同，但成本更低。
祝你好运，如果你确实找到了解决方案（没有双关语），请分享。
戴夫



     以下为原文

  > {quote:title=wreeve wrote:}{quote}
> In a previous post I was looking for replacement loads for my 85032B Cal Kit. I found what I was looking for but they have been stored for some time in the cal kit box and are filled with decomposed foam that was used to line the box.
> 
> The decomposed foam is sticky and cannot be blown or brushed away - it simply balls up into a bigger, stickier mess. Yes, I know the manual says to use compressed air and isopropyl alcohol but this assumes ordinary daily cleaning. What about heavy cleaning of decomposed, sticky foam?
> 
> Should I soak the components in isopropyl alcohol or is there a better chemical? Or, should I not use any chemicals at all? 
> 
> Any constructive advise will be appreciated.....

What an unusual problem -  I have never heard of anyone having trouble cleaning connectors before! 

The foam is horrid, and I'm afraid to say, I have never been too successful in removing it from 3.5 mm connectors. N and APC7 are less problematic. I have my suspicions gold is slightly soluble in that foam too. It is like a time-bomb waiting to go off. Of course it is much worst if some idiot stores connectors without caps on. 

Like you I have tried IPA, and found it ineffective at dissolving that foam. I have also tried IPA in an ultrasonic cleaner, taking best  I could, to keep it away from the dielectric support. But the very nature of an ultrasonic cleaner means that is probably impossible. Then I tried heating the IPA in the ultrasonic cleaner, and that did not work either. 

Acetone does dissolve the foam, but I would think it has a high probability of doing other damage. Even if you keep the liquid off of the dielectric support, I suspect the vapors might cause problems to the support, as acetone dissolves most plastics. 

Old cal kit manuals, like the APC7 / 7mm 85050A manual I have attached, recommend the use of carbon tetrachloride (CCL4), which *might* work better, although carbon tetrachloride is more difficult to get hold of, due safety issues with it. Used sensibly, in the quantities needed to clean connectors, it is not going to have a significant impact on your health or that of the atmosphere. But I have no idea carbon tetrachloride will dissolve that foam - I'm just suggesting it might be worth a try, if you don't work in a company where the Health and Safety officer would throw a fit at the thought of anyone using carbon tetrachloride. I doubt anyone in Keysight uses CCL4 - or if they do, its use would be only occasionally from a secret draw they kept it in! 

I had an old 85052B cal kit, and was never able to clean the foam from some of the components properly, and so sold them on eBay as "for parts or repair", with photos showing the foam. A dealer in Hong Kong won the auction and bought them. 

I read that the Agilent cleaning sticks, 9301-1243 were very good, and having tried them, they are the best I have found. But they are very expensive. They are made by Berkshire, with the part number LT170183.15 and have 100 in a pack.  (Agilent rather foolishly perhaps left the original manufacturers name and model number on the bag). I contacted Berkshire and my inquiry was past to their UK distributor, who would sell them at about a third of the price of the pack I bought from Agilent. But when I tried to buy them, the minimum order quantity was one box, which has 30 packs of 100 in them. I pack of 100 last me a year or two, so given I am 50, the chances of me ever using 30 packs is close to zero. I am not sure what I will do when I run out - buy a pack from Keysight, or pay 10x as much, but get 30x the number, and hope to sell off the rest. 

Buying used 3.5 mm connectors seems to be a nightmare. Seller jewels6410 on eBay often has 3.5 mm components, and she does know how to gage them. Her prices are pretty good too. 

Note the female contacts on the slotless 3.5 mm connectors in the 85052B calibration kit can be replaced. You need a special tool, and the inserts are not cheap, but I know a lab in the US who quoted me $100/contact. But of course

BTW, the opens and shorts used in the 85033E and 85033D kits appear to be the same as those in the 85052B, but cost less. 

Good luck, and if you do find a solution (no pun intended), then please share it. 

Dave