I remember I had several jobs to do using Dahua and Hik with over a 150 cams to install and I had to send everyone of them back. At night they fogged up. Complete nightmare. Manufacturing fault at the factory. Cameras were put together in a room with the humidity too high trapping moisture inside the cam. I could easily of fixed them but why should I.
Spec me a CCTV System
- Thread starter Sirrel Squirrel
- Start date
I remember I had several jobs to do using Dahua and Hik with over a 150 cams to install and I had to send everyone of them back. At night they fogged up. Complete nightmare. Manufacturing fault at the factory. Cameras were put together in a room with the humidity too high trapping moisture inside the cam. I could easily of fixed them but why should I.
WTF? The two biggest camera manufacturers in the world both shipped cameras built under incorrect conditions at the same time? Interesting story. We handle about 200 cameras a month and we get one that’s obviously defective out of the box about 3-4 times per year. We mainly do Dahua, but we also have Hikvision (increasingly less), Axis and we’re just starting to look at getting in with Verkada but they’re a tough sell!
The cameras I manufacture that sell for much much more than the cameras were discussing in here all have "moisture release screws" so it's definitely not something a cheap camera alone has.
I'm going to try a Reolink 520, via Amazon anything goes wrong I'm covered.
I'm going to try a Reolink 520, via Amazon anything goes wrong I'm covered.
So what you're saying is 100% were faulty, quality is not good #warrantedsarcasm
We go way beyond simple IP ratings, ours come under RTCA DO160E.
AD Aerospace, specifically our 315 we use the screw for build and maintainence to dry purge the cameras. We heat and vacuume the cameras for 24 hours then fill them with dry nitrogen.
Now I'm not saying Reolink do this but maybe they have some sort of procedure to remove moisture.
AD Aerospace, specifically our 315 we use the screw for build and maintainence to dry purge the cameras. We heat and vacuume the cameras for 24 hours then fill them with dry nitrogen.
Now I'm not saying Reolink do this but maybe they have some sort of procedure to remove moisture.
I’m quite certain that Reolink don’t do that. I’m equally certain that none of the manufacturers we use (including the eye-watering lay expensive Verkada cameras) do that. Good to know though. So I would imagine you can handle multiple atmospheres of pressure? I’ve got a customer who want to put cameras inside a retort (2 atmospheres over atmospheric at 121C) - would you make something that would handle that?
Interesting. Mine doesn’t have that. I got mine direct from Secomp in Holland (they don’t seem to have a UK office). I’m guessing yours came from a UK warehouse somewhere?This is the picture they sent to me to identify it.
Nothing we do would handle 121C. The specs we work to are more about negative temperature, ie 50,000ft which is why we have heaters on the lenses. The pressure would be no problem though, we pull a negative 2 bar vacuum for 24 hours, the thing is made of sapphire glass about 10mm thick, titanium and has double seals throughout.
God damn, I want one!
I've not opened mine to see if that screw is there. Yeh it said it came from a UK warehouse.
That’s a pity! Making images inside retorts seems VERY niche. The company that makes the retorts (Lagard) has suggested we put a stabbing into the retort and mount the camera externally using a fibre optic lens but that requires a new pressure test certificate and the cost is such that my client would be better off selling the retort and buying a new one from Lagard. Thanks for responding and I’ll keep looking.
Bare in mind our cameras sell for around £8k+ so unless there going on a plane or helicopter their probably out of budget, and that's just our commercial stuff never mind military, plus video standards can be different we have some strange configurations such as HD at 100ohm balanced via quadrax, which if you know the cable is horrendous. Most are either 75ohm balanced or unbalanced though, but we pretty much do anything, plus different Peak to Peak offsets.
Anyway im keen to try reolink just seems good value.
£15K Max would be the budget. Modification and recertification of the retort would be upwards of five times that so it’s not an easy decision. Hikvision do have a high temperature camera for about £3500 and I don’t think the pressure would actually have any real impact on it given that it’s all solid state except of course it would have to withstand slow pressurisation followed by extremely rapid depressurisation and I’m not sure how the ‘sealed’ parts of the camera would cope with that and it seems a touch pricey to experiment with one.
As for the value proposition on Reolink. I’ve got one here and it’s lightweight construction with reasonable daylight image quality for a £35+VAT camera. I’ve not had it unpacked long enough to test it in the dark yet, but the online reviews suggest it’s fine. Do I think it’s good value against the equivalent 5MP Dahua or Hikvision, both of which would be fully made of metal and probably £65-£75+VAT? I’m not sure. One benefit of the plastic mounting hardware is it won’t weld itself onto the screws like the Hikvision and Dahua cameras do if you use the supplied screws.
Caporegime
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Eufy system works well for me. Reolink seems a good option too.
Reolink Argus is probably state of the art in this area at the moment.
