First, let me thank you all for your insight so far. It has given me alot of good information to think about, and probably set up some tests. Keep 'em coming.
To Carl, it really isn't a smoky environment. All the smoke from the ovens is vented through the roof by chimneys. The ovens don't get extremely hot because we are mostly smoking meats where the ovens may not go above 170-180 deg F, but may smoke a batch of hams for several hours.
It sounds like we may have to go with an enclosure in these particular areas to help control the camera environment better.
I have been deploying Grandstream GXV3674_FHD_VF IP cameras to other areas in the plant and have been very pleased with the results so far.
I'm not sure how they will hold up in the oven area, but will probably give one a shot being as I have them in stock. They do have gasket seals, but I will enhance that with silicon sealant, and a silica gel pack inside. Being as they are bullet cameras, I don't have to go back in the camera dome to adjust the FOV or focus while in place. I can seal/test the cameras in a good dry environment before installing.
I do have one question with sealng these though. The cameras have two knobs on the bottom to adjust zoom/focus. Any ideas on how to seal them (other than just siliconing up the gap around the knobs after they have been adjusting on-site)?
I havent taken one of the cameras apart yet (but will today) to see if/how the adjustement knobs/electronics can be sealed from the camera lenses. I would think that the holes the knobs come through the housing could allow moisture to get back into the case, and with it almost completely sealed now, the moisture would have no way to get back out.
BTW, Anyone have any experience with Grandstream cameras? I know there are a zillion companies making cameras now that go anywhere from crap to excellent. We've tried several different brands of cameras and so far we have been very please with these cameras for the money. (Especially coming from existing cameras being basic analog ones that have to cover relatively large areas, and cannot produce the kind of detail that is needed)
Their software isn't the greatest in the world, but I am still evaluating options for VMS software. Right now, most of my recordings are being triggered from the camera itself and are saved via FTP to a NAS on our network, and it works pretty well. We don't have a huge demand for going back to recorded footage, so having a separate directory for each camera to save motion activated clips in works ok for now. All the clips are timestamped, and most of the time a 1 minute clip is enough to catch what we are trying to find. If we know about when an event occured, scanning through 2-3 clips normally gives us what we need to know.
Most of our camera useage comes from several people in management having the camera viewer open on their PCs and checking in at different locations as needed.
Once again, thank you all for the help and ideas.