3-13
Brooks
®
Digital MFC's & MFM's
Section 3 Operation
Installation and Operation Manual
X-TMF-SLA5800-MFC-eng
Part Number: 541B027AAG
April, 2013
3-8 Special Features
Special Features may be adjusted by an advanced user via the Service
Port using a special software application available from Brooks. Reference
the Brooks Service Suite User Manual for more information about the
Service Port and Service Tool software applications.
3-8-1 Setpoint Ramping
The following Setpoint Ramping Options are provided:
Off
– The device responds immediately to Setpoint changes.
Time –
The device will Ramp Flow from the old Setpoint to the new
Setpoint in the time specified by the user in seconds.
3-8-2 Low Setpoint Command Cutoff
When the Setpoint is derived from analog input, the Low Setpoint
Command Cutoff parameter sets the minimum valid value of Setpoint. If
the Setpoint value reported by the analog input is below the Low Setpoint
Command Cutoff parameter value, then the Setpoint will be set to zero.
3-8-3 Low Flow Output Cutoff
Whenever the measured flow is below the Low Flow Output Cutoff
parameter, the Flow Output will be set to zero.
3-8-4 Flow Output Damping
The Flow Output can be damped from 0 to 10 seconds.
3-8-5 Adaptive Control
Adaptive Valve Control is a means of dynamically adjusting valve offset
and span in response to changing process conditions. Options for Adaptive
Control are: On/Off, Adjust Offset Only, Adjust Offset and Span.
3-8-6 Flow Totalizer
A Flow Totalizer will be provided and maintained in Non-Volatile Memory.
The update rate of the totalizer in Non-Volatile Memory will be 5 seconds.
3-8-7 Flow Output Conditioning
When this feature is enabled and a change in setpoint is detected, the
Flow Out signal will equal setpoint for a configurable time period. At the
end of the time period, the Flow Out signal will indicate actual flow. A
change of setpoint is defined as a change of more than 1% of full scale.
