Chemical Plants
Use Case : As wireless analog output converter
---Monitoring of sound noise level that is generated from factory.
Challenges
Monitor of sound noise level at each place, and communicate to DCS by wireless.
Solutions
--The sound level meter has analog output band indicates the noise level as DC voltage.
--The DC voltage output is changed to 4-20mA signal by signal conditioner.
---The converted signal is connected to YTA (Temperature Transmitter) input with 5-ohm load
resister, and YTA can receive 20 -100mV DC voltage that is proportional to sound level.
---The noise level data is sent to the DCS and can be monitored.
---Repeater is installed on the top of the building located around the center of the factory.
ISA100 Wireless Benefits
--Flexible monitoring points in the plant.
--Eliminate wiring and maintenance costs
--Robust communication and low Packet Error Rate (PER).