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I need to display 20, 4-20mA loop values locally, and remotely on an HMI. I currently have 20 Red Lion loop indicators mounted in a control panel to give local indication, and run an RS485 link back to an Opto22 controller and PC located in a trailer on site. The customer pointed out that 20 Red Lion displays cost more than some laptop computers, and couldn't we replace the loop
indicators with a flat panel display and/or CPU combination. Sounded like a good idea until I started pricing things. I have not been able to find a flat panel display and or CPU combination for under $2500.00. ( not even close ) This seemed a little strange since I can buy a Dell laptop for $1999.00 or less. The environment
is not hazardous, but it is literally a shed in the middle of a field, so it is not somewhere we would like to keep a laptop out in the open.
Does anyone have a suggestion.
Thanks, Fred Chwalek
indicators with a flat panel display and/or CPU combination. Sounded like a good idea until I started pricing things. I have not been able to find a flat panel display and or CPU combination for under $2500.00. ( not even close ) This seemed a little strange since I can buy a Dell laptop for $1999.00 or less. The environment
is not hazardous, but it is literally a shed in the middle of a field, so it is not somewhere we would like to keep a laptop out in the open.
Does anyone have a suggestion.
Thanks, Fred Chwalek