TSI Instruments FHC50 User Manual

46 Part Two
BALANCE MODE SUBMENU
MENU ITEM
SOFTWARE
NAME
ITEM DESCRIPTION
ITEM RANGE
DEFAULT
VALUE
UNCORRECTED
FLOW
FHC50 Only
UNCORRECTED
FLOW
The UNCORRECTED FLOW item displays the measured
flow without applying a K Factor. This item is for reference
only.
0 to 10000 cfm
NONE
(Read-only
value)
K FACTOR USED
FHC50 Only
KF USED
The KF USED item is used to display the K Factor currently
being used to adjust the flow. This value is for reference
only, and will update when BAL MODE Kf is adjusted.
0.01 to 10.00
NONE
(Read-only
value)
CORRECTED
FLOW
FHC50 Only
FLOW * Kf
The FLOW*Kf item is used to display the corrected flow,
which multiplies the uncorrected flow by the K Factor
currently being used. This value is for reference only, and
will update when BAL MODE Kf is adjusted.
0 to 10000 cfm
NONE
(Read-only
value)
CONTROL MENU
MENU ITEM
SOFTWARE
NAME
ITEM DESCRIPTION
ITEM RANGE
DEFAULT
VALUE
SENSITIVITY
FHC50 Only
SENSITIVITY
The SENSITIVITY item selects the integral dead band. The
integral dead band determines when the controller uses
integral control (slow control), and when the controller
enters PID control (fast control).
Each % of SENSITIVITY represents 1 ft/min (5 cfm) that the
face velocity (flow rate) must be away from set point before
the FHC50 controller enters PID control (fast control). For
example, if the SENSITIVITY is set to 80% and the set point
is 100 fpm (500 cfm), the face velocity must drop below 80
fpm (400 cfm) or rise above 120 fpm (600 cfm) for the
controller to enter PID control.
10% to 100%
80%
WARNING: Controller may hunt if SENSITIVITY is set too
high, resulting in poor control and loss of
containment.
SPEED
FHC50 Only
SPEED
The SPEED item selects the control output speed. The
greater the SPEED setting, the faster the control output.
10% to 100%
80%

TSI Instruments FHC50 Specifications

General

Brand	TSI Instruments
Model	FHC50
Category	Controller
Language	English