GE HumiLab, Руководство оператора

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Appendix B — Humilab chilled mirror hygrometer details Page
47
Displays Main display. The upper display can show R.H. or Dew Point °C or
°F. The front panel DISPLAY switch is used to determine which
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. The CONTROL STATUS display includes a
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 DISPLAY switch
O - In Output Select mode when using the DISPLAY switch
Horizontal bars indicate the approximate amount of condensation
on the sensor mirror when the
SENSOR switch is in HEAT or COOL .
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
DISPLAY switch for re-programming Units,
Outputs, or Alarms.
MANUAL
No PACER cycle unless manually initiated.
INIT
No PACER cycle unless manually initiated.
F
SENSOR
Switch — This is a three-way position switch that selects:
HEA
T Allows the mirror to be cleared of condensation in order to
check for proper control loop operation.
OPERATION
Normal operation.
COOL
A momentary position that forces maximum cooling in
order to check depression capability.