1-6
Brooks
®
Digital MFC's & MFM's
Section 1 Introduction
Installation and Operation Manual
X-TMF-SLA5800-Series-RevB-MFC-eng
Part Number: 541B187AAG
January, 2017
Fast Response Performance
The curves in Figure 1-2 depict the MFC output signal and actual
transitional flow to steady-state when gas flow enters into process
chamber, under a step response command condition.
Brooks devices also feature adaptive (optimized) PID control, including fast
response. and linear ramp-up and/or ramp-down control characteristics.
Calibration Selection
Select one of 6 calibrations via Brooks Expert Support Tool (BEST) or
digital signal (See communications protocol for your digital coms). Analog
devices can be switched via voltage signals to Pin 11 & 8 on Firmware
Version 1.18 & newer.
Selectable Soft Start
Processes requiring injection of gases can be adversely affected by
excessive initial gas flow. This abrupt injection of gas can result in process
damage from explosion or initial pressure impact. These problems are
virtually eliminated with the soft start feature.
Figure 1-1 General Wiring
PC-based Support Tools
Brooks Instrument offers a variety of PC-based process control and service
tools to meet the needs of our customers. Smart Interface may be used with
any unit supporting RS485 S-Protocol in a multidrop configuration, thus
allowing users to control and monitor their Brooks devices. The Brooks
Expert Support Tool (BEST) may be used to monitor, diagnose, tune and
calibrate Brooks devices equipped with DeviceNet communications. The
Brooks Expert Support Tool interfaces with Brooks products via a special
service port.
