Renewing dessicant

rkayakr

Can the desiccant tablets be renewed by heating them? If so, at what temperature and for how long should they be heated?

Sam@ZWO

you need to reach 400 degree

usually no device at home can do it

you can use other desiccant

rkayakr

Thanks for the reply.

Did you mean 400C - which is not easily reached or 400 F which is easily reached by ovens in NA?

han.k

Sam,

I have a v2 ASI1600MM-Cool. Technically I prefer the V2 design with the internal desiccant rather then the v3 with the separate desiccant tube sticking out, but I assume it is better for non-technical users.

I assume if the enclosure is good (do I see a o-ring?), the desiccant would last 10 years or so. It this correct?

Unscrewing v2 front cover to replace the desiccant, is that easy possible by hand? I noted V3 has bolds rather then a screwed front. In general raw aluminum screwed connections have the tendency to get problematic after some years due to a little oxidation, but it looks like ASI1600 thread is coated.

Regards, Han

Sam@ZWO

han.k wrote:
Sam,

I have a v2 ASI1600MM-Cool. Technically I prefer the V2 design with the internal desiccant rather then the v3 with the separate desiccant tube sticking out, but I assume it is better for non-technical users.

I assume if the enclosure is good (do I see a o-ring?), the desiccant would last 10 years or so. It this correct?

Unscrewing v2 front cover to replace the desiccant, is that easy possible by hand? I noted V3 has bolds rather then a screwed front. In general raw aluminum screwed connections have the tendency to get problematic after some years due to a little oxidation, but it looks like ASI1600 thread is coated.

Regards, Han

Hi Han

you are correct changing internal desiccant is more effective than use one external tube

but seems most of our customer are non-technical users

it's very easy to unscrew the V2 front cover, V3 still use O-Ring to seal

rkayakr

Sam - did you mean 400C or 400F?

Sam@ZWO

rkayakr wrote:
Sam - did you mean 400C or 400F?

400C, I was told by the factory

anyway, you can choose other desiccant too

rkayakr

Thanks for the reply.

Many desiccants renew at around 400 F which is easily reached by home ovens.

Sam@ZWO

rkayakr wrote:
Thanks for the reply.

Many desiccants renew at around 400 F which is easily reached by home ovens.

we use molecular sieve instead of Silica gel

The hygroscopic capacity of molecular sieve is better

mktmgrjrm

Sam: I just purchased a ZWO ASI290MM-Cool camera. The camera came with a replacement set of dessicant pellets, but the indicator sheet inside the package (still sealed) shows completely pink, which appears to mean it would no longer be effective. Is is possible to have this replaced since the camera is new? Thanks for your consideration.

Sam@ZWO

mktmgrjrm wrote:
Sam: I just purchased a ZWO ASI290MM-Cool camera. The camera came with a replacement set of dessicant pellets, but the indicator sheet inside the package (still sealed) shows completely pink, which appears to mean it would no longer be effective. Is is possible to have this replaced since the camera is new? Thanks for your consideration.

sorry about this problem, the humidity indicator is 8%

that's too strict actually, so the dessicant should be still useful because the package is sealed

maybe 10% or 20% humidity which is still very low enough

we are going to change it with one 30% which should be more suitable