Experience and tips on the use of wireless instruments in tank areas
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Rosemount came to our company to discuss the advantages of using wireless instruments in tank areas: 1. No need to lay cables, which saves on cable costs as well as installation costs. 2. The configuration is simple; it can be configured directly in the DCS via HART. 3. Adding measurement points is simple; no additional cables are needed – it can be installed directly, and configuration is done via DCS. 4. Improve the explosion-proof safety of the tank area. I was wondering if anyone here has any experience with similar projects. Also, what is the interference resistance of such wireless meters, and what aspects need to be taken into consideration during regular maintenance?
It must be expensive, that’s why no one uses it
At least in companies of our mid-to-low tier, it’s not necessary. Personally, I think it will take a long time before this wireless transmission technology becomes widely used.
http://bbs.hcbbs.com/thread-1288249-1-1.html for the original poster’s reference
Regarding the battery, the manufacturer’s instructions state a lifespan of 10 years, but I think 8 years should be sufficient. I personally prefer a wireless approach, as it represents the trend in the development of instruments in the future. The main issue is the reliability; I’d appreciate it if those with experience in such projects could share their insights.
I won’t say anything else; just one thing – its interference resistance is very poor. This alone is enough to rule out its use in ammonia tanks in areas where safety is critical. My personal advice is to avoid using it.
Do you have any experience using it? What are the main sources of interference? I see that the wireless frequency bands are all 2.4G, with fewer interference sources
I work on repairing instruments; I’m not from the manufacturer. Personally, I think this is an emerging trend – wireless will definitely replace wired connections in the future. There are already many such examples in reality, such as from telephones to mobile phones, and from wired routers to wireless routers, and so on. The issue that is mentioned the most is interference, and it certainly exists, but it doesn’t affect everything. What do you think?
That’s what the manufacturer writes in their product description; I just checked it – it’s Rossmont’s wireless meter series
My colleague’s company (in the natural gas chemicals sector) has used it, and it’s not good.
It is being used more and more often; aside from hazardous substances, it can be utilized in large-scale tank farms, and it has a proven track record of effectiveness. However, whether it is appropriate depends on the distance of the cable as well as the price difference between conventional and WIA instruments. For example, if there are not many water tanks and they are not far from the control room, it’s unnecessary to use them.