These Dell processes/services all appear to be part of Dell SupportAssist or possibly other Dell-branded utilities. At any rate, I uninstalled SupportAssist and all the Dell services on my system, including Dell Instrumentation, went away. You can certainly live without SupportAssist, though you may want to check the support site occasionally for recommended driver updates.    
I'm trying to find out if I can switch off Dell Instrumentation and other system running files. They are hogging my memory a lot. My system is no longer eligible for support, but the product is only a few years old and has plenty of life left.
Can I stop or remove dell instrumentation. It's hogging all my memory