Displays - GE HumiLab Operator's Manual

MANUAL
INIT
F
SENSOR
HEA
T
OPERATION
COOL

Displays

Appendix B — Humilab chilled mirror hygrometer details
No PACER cycle unless manually initiated.
No PACER cycle unless manually initiated.
Switch — This is a three-way position switch that selects:
Allows the mirror to be cleared of condensation in order to
check for proper control loop operation.
Normal operation.
A momentary position that forces maximum cooling in
order to check depression capability.
Main display. The upper display can show R.H. or Dew Point °C or
°F. The front panel
parameter is displayed. The factory default for the Humilab is
%R.H. The lower display shows temperature in °C or °F. The factory
default is °C.
Control status display.
green control light and a green, seven segment LED display. The
control light comes on when the system detects both a stable dew
or frost layer and a stable dew/frost point temperature. The green
LED can read as follows:
P - Programmable Automatic Contaminant Error Reduction
(PACER®) mode or Automatic Balance (AUTO) mode is in opera-
tion.
S - Service. The system optics require service, cleaning, or adjust-
ment.
U - In Units Select mode when using the
O - In Output Select mode when using the
Horizontal bars indicate the approximate amount of condensation
on the sensor mirror when the
It is an indication of dew layer thickness on the mirror.
See the information starting on page 49 in this appendix for infor-
mation on using the
Outputs, or Alarms.
DISPLAY switch is used to determine which
The CONTROL STATUS display includes a
SENSOR
DISPLAY switch for re-programming Units,
DISPLAY switch
DISPLAY switch
switch is in HEAT or COOL .
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