Hired-Hand Farm Hand Series: Data Shuttle Launch Pad - Manual (Page 18)

Part No. 4801-0165 Rev 7-02 Data Shuttle Launch Pad 16
Pressure limit is the Target Pressure minus half of the Pressure Differential. The
controller will open and close the vents as needed to maintain pressure between the high
and low limits.
Pressure Differential – The difference in pressure around the target that is used to
establish the high and low temperature limits
The remaining parameters on this screen are similar to the stage controllers and are
described in Section 11.1 of this manual. These parameters are:
Target Temperature
Stage Timer Percentage
Cool Timer Minimum Percent
Cool Timer Maximum Percent
Room Temperature Display
Program Loader
13.2 STAGE DATA Window
This window applies to: Î The Vent Master
The stage data window for the Vent Master
is very similar to the screens used for other
stage controllers. See Section 11.2 for a
discussion of the following parameters:
Timer
Mode
On At
Off At
Sensors
13.3 INLETS Window
This window applies to: Î The Vent Master
This window is used to adjust the inlet Vent
Time Delay, the Tunnel Target Pressure
and the Tunnel On At and Off At
temperatures. The following parameters
can be set with this window:
Vent Time Delay – This setting is the
length of time a pressure reading must be
out of range before the controller will
operate the vents. This will keep the vents
from constantly cycling open, then closed.
If the vents cycle too much, increase this
setting using the plus (+) button.
Tunnel On At – The temperature at which
the controller will go into tunnel mode.
Tunnel Off At – The temperature at which the controller will go out of the tunnel mode.