Brooks Instrument 4800 Series - Manual (Page 16)

2-4
Brooks ® 4800 Series
Section 2 Installation Installation and Operation Manual
X-TMF-4800-MFC-eng
Part Number: 541B072AAG
September, 2013
2-8 Electrical Connections
The setpoint signal is supplied as a 0 to 5 Vdc or 4 to 20 mA analog signal.
All signals are supplied via the 15-pin D-Connector. There is also an
optional local operator interface (LOI). When the LOI is used the setpoint
signal is provided by the LOI.
The Brooks electrical interface is designed to facilitate low-loss, quiet
signal connections. Separate returns (commons) are supplied for the
analog setpoint, analog flow signal, and the power supply. These commons
are electrically connected together on the PC board.