Chapter 3 – Operation
TestEquity 1016H & 1027H Temperature/Humidity Chamber
Page 3-3
HUMIDITY ENABLE Light
The Humidity mode is enabled through Event 2 on the F4 Controller or the Humidity button on
the F4T Controller. This should only be ON if you are performing a controlled humidity test
within the humidity range of the chamber (+10
°
C and +85
°
C). The HUMIDITY ENABLE light
will be illuminated, as long as the chamber temperature is 7
°
C and +90
°
C. The chamber
will cool in single-stage refrigeration mode.
If the Humidity mode is disabled, the chamber will cool in cascade refrigeration mode and there
will be no humidity control.
HUMIDITY Light
The HUMIDITY Light will illuminate when the F4T/F4 Controller turns on the humidifier
heater to maintain the workspace humidity. The HUMIDITY Light will cycle on/off as the
workspace humidity approaches and reaches the humidity set point.
Note that the HUMIDITY ENABLE must be ON, the chamber workspace must be between
+7
°
C and +90
°
C, and the humidifier water level must be correct for the HUMIDITY Light to
correspond to the humidity output on the F4T/F4 controller.
There is no corresponding light on the front panel for the dehumidification function.
