Being relatively new to Hydraulics and IQAN It seems to me that most experienced folk in that field talk pressures in terms of BAR and others who maybe more peripherally involved use PSI. In my world that means that teh engineers/mechanics/fitters etc use bar and machine operators tend to use psi. As such on most of my HMI designs I have a slider/switch/parameter that can toggle between the 2 so that who ever is using the machine can see their pressures in their measurement of choice.
The calculation between the 2 is not complicated, nor is the building of a structure that allows you to easily swap on the display the visible output between one unit type and the other.....but it gets old having to put multiples of those same building blocks in place to do the conversion and support the visible flag for multiple pressures etc and it makes HMI design a drag as you overlay mutiple gauges etc....
So I was wondering in the (sometime) future if the definition fields for a device like a pressure sensor (but in effect any device) could support multiple measures and either output in terms of a separate output channel for each measures or use an input channel to define which of these comes from a single channel output... For example an SP035 could have definition 1 as min 0, max 35, unit bar (just as it is today in design) , and definition2 as min 0, max 507.7, unit psi, being effectively the same thing. The downstream math channel or internal digital that does the calculation/ manipulation could access the device choice channel to modify whatever is being done to account for the unit values differences
If the same input channel that determines which device definition output to use was also available to display devices we could also have multiple scales on a single gauges etc rather than multiple gauges that are selected by a visibility channel.
I know its late Friday afternoon as I post this and my brain may have exceeded its weekly whirring amount....Is this something people think could be useful or should I just shutdown for an afternoon beverage earlier in the day :<)
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