Flecc, thanks for your comments. I really appreciate your feedback as you are obviously a knowledgeable, experienced and well rounded individual. I agree that is in not easy to offer anything with both low cost and adequate ongoing support.
In my previous life I worked for a Marine Electronics Company as a service Engineer. A lot of the work was related to the LNG (Liquid Natural Gas) industry which is basically huge tanker sized ships which carry natural gas cooled to such a temperature that it becomes a liquid (-162deg C, if I remember correctly). The equipment my previous employers supplied was very fundamental to the safety of the cargo transfer and due to the very hazardous nature of the cargo required everything in certain areas to be safe for operation in a possibly explosive, hazardous environment. They also supplied some other products related to engine performabce measurements etc.
There are many options to achieve hazardous area certication and fail safe operation and the most appropriate is applied which best fits the requirements. Engineering is primarily problem solving IMO. I always preferred to be out in the field, which could be just about anywhere in the world, even though I could have quite easily slipped into being a design Engineer, but sitting in front of a computer in an office is not my idea of fun. Also I feel that I probably made a much more significant impact on the products by actually getting out there and experiencing the products in use, commissioning them and fixing all the inevitable problems that do occur.
There were many examples where I solved problems with products or at least facilitated the Design Engineers to get them put right, wrote manuals, created installation procedured and trained overseas engineers etc. As you probably know, design engineers do not like to be told their little baby has got some issues
So you need to be pretty sure about the facts before you say too much.
I've got things in the pipeline now and I'm personally quite amazed at the contacts and resources that have come to me in the relatively short time I've been fully focused (well apart from doing a full time Chinese language course, which is pretty challenging for the average Brit that never even bothered to learn French at school
). I don't doubt there'll be problems along the way, but if you're heart is set on a worthwhile goal and you have faith in yourself, you cannot fail IMO
Also, this is not all about me, there are many people involved in 1 way or another. If everyone else involved in my dream can also get something from it, then that would be just as satisfying as the fact I achieved my hearts desire. There's more to life than flash cars and big houses, although I am partial to the odd nice holiday somewhere nice
I'm very happy that I am allowed to give some thoughts and hope that I can help others. If I overstep the mark, please let me know as I can get a big carried away at times.