Today is...
Thursday, July 19, 2018
Welcome to, the global online
community of automation professionals.
Featured Video...
Featured Video
A tutorial introduction to programming using the QuickBuilder Programming Environment.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Analogue Input & High Level Analogue Input
Difference between analog input and high level analog input

What is difference between Analogue Input & High Level Analogue Input? What type of instrument have both AI & HHLAI type of input?

1 out of 1 members thought this post was helpful...

The term high level analog input could very well be a vendor-dependent marketing term.

A couple of vendors call a high level analog input one with only 0/4-20mA or 0/1-5Vdc inputs. While an analog input could be either a universal analog input (T/C, RTD, or mA) or dedicated current, voltage or resistance inputs: thermocouple, resistance, RTD, mV, strain gauge.