Sierra Instruments has released its new programmable control module, the Compod, which when coupled with Sierra’s Smart-Trak mass flow meters and controllers simplifies basic flow control installations and permits networking of multiple instruments using MODBUS RTU protocol. Its two digital input/output channels and the analog input channel and a configurable pulse output channel can automate gas processes without the need for an external PLC or computer. 
Sierra Instruments
www.sierrainstruments.com