GE HumiLab Operator's Manual page 23

Chapter 2 — Operation
In the manual position, you will never see the
played, telling you that the sensor mirror needs cleaning.
The upper ( INIT iate) momentary position manually triggers a Pacer
cycle.
F. SENSOR Switch.
OPER ate position.
This switch allows you to over-ride the automatic mirror control
loop, and force the mirror temperature up or down, causing it to
heat or cool. These are test positions used for sensor diagnostics.
G. TEMPERATURE Display.
reads temperature in °C. It may be factory or field programmed to
read °F if desired. See Appendix B.
H. STATUS WINDOW (Temperature).
ator with programming status for the Temperature display when
programming Units or Outputs. See Appendix B.
I. SETPOINT Display.
humidity setpoint that has been programmed in the chamber.
J. SET (SETPOINT) Switch.
humidity setpoint in the display window. Scroll to the desired value
by incrementing or decrementing, one decade at a time, until the
desired value is reached.
K. LOOP SELECT Switch.
Loop position (up, toward the filled-in circle).
In the Closed Loop position the chilled mirror hygrometer controls
the chamber relative humidity. In the Open Loop position, you can
download humidity profiles from the Prostep software program,
and you can perform diagnostics if necessary (see Chapter 3).
L. CAL/AUTO Switch.
tion.
When this switch is pressed into the momentary
the system begins the automatic 9-hour recalibration cycle.
The SENSOR switch is typically kept in the center
As shipped from the factory, this display
This window provides the oper-
This display window shows the relative
This switch allows you to select a
This selector is normally kept in the Closed
This switch is typically kept in the center posi-
ervice light dis-
"S"
CAL ibrate setting,
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