An Acromag Application Note
The Problem: Monitoring up to 500 Temperature Measurement Points
A chemical manufacturer has up to 500 temperature measurement points. In addition, they’re monitoring points for pressure, level and flow, and have thermocouple and RTD scattered throughout their process. It would be cost prohibitive to run and maintain twisted pair wire for all these points, both initially and in the long term. Further, the number of IP addresses on their network determines their SCADA system license fee. With remote I/O temperature units averaging 4 to 6 channels each, this could also be costly. As a result, Ethernet is the preferred solution.
Temperature Measurement with Ethernet I/O – System Requirements:
The manufacturer’s Honeywell Experion® SCADA system utilizes Modbus® TCP/IP protocol. The remote I/O needs to be a Modbus server which accepts a mix of thermocouple and RTD signals. Therefore, higher channel density is preferred.
Company: Acromag
