Brooks Instrument GF81 - Manual (Page 35)

2-15
Brooks ® GF40/GF80/GF81 Devices
Installation and Operation Manual
X-TMF-GF40-GF80-Series-MFC-eng
Part Number: 541B161AAG
June, 2013 Section 2 Installation
2-19-5 Alarm Output (Analog I/O versions only)
The Alarm Output is an open collector or "contact" type that is CLOSED
(on) whenever an alarm is active. The Alarm Output may be set to indicaqte
any one of various conditions.
Figure 2-12 Alarm Output Schematic