9100SDry-WellCalibrator
ControllerConfiguration
24
to lower the temperature back down. In this way the temperature is maintained at a
fairly constant level.
The temperature stability of the well and response time depend on the width of the
proportional band. If the band is too wide, the well temperature deviates excessively
from the set-point due to varying external conditions. This is because the power
output changes very little with temperature and the controller cannot respond very
well to changing conditions or noise in the system. If the proportional band is too
narrow, the temperature may swing back and forth because the controller overreacts to
temperature variations. For best control stability, the proportional band must be set for
the optimum width.
The proportional band width is set at the factory and printed on the Report of
Calibration. The proportional band width may be altered by the user if desired to
optimize the control characteristics for a particular application.
The proportional band width is easily adjusted from the front panel. The width may
be set to discrete values in degrees C or F depending on the selected units. The
proportional band adjustment is accessed within the secondary menu. Press “SET” and
“EXIT” to enter the secondary menu and show the heater power. Then press “SET” to
access the proportional band.
S+E
Access heater power in secondary menu
SEC
Flashes
SEC
for secondary menu and then displays the
heater power
12.0P
Heater power in percent
S
Access proportional band
PrOP
Flashes
prop
and then displays the setting
4.1
Proportional band setting
To change the proportional band press
u
or
d
.
10.0
New proportional band setting
To accept the new setting press “SET”. Press “EXIT” to continue without storing the
new value.
S
Accept the new proportional band setting
6.8 Controller Configuration
The controller has a number of configuration and operating options and calibration
parameters which are programmable via the front panel. These are accessed from the
secondary menu after the proportional band function by pressing “SET”. Pressing
“SET” again enters the first of three sets of configuration parameters — operating
1.888.475.5235
Fluke-Direct
.com
Summary of Contents for 9100S
Page 8: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 16: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 18: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 26: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 38: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 42: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 44: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 48: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...
Page 50: ...1 888 475 5235 info Fluke Direct com Fluke Direct com...