H300 Temperature Humidity Chamber
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The
CONT
switch allows you to turn off both temperature and humidity control to the chamber without
changing the target set point of either controller. Both controllers and the chamber will still be On, but no
power will be supplied to the temperature and humidity control units inside the chamber. This switch is
useful when you need to open the chamber door.
Figure 3: Chamber Controls
Chamber Door
The chamber door needs to be sealed for the chamber to maintain proper humidity and temperature.
Tighten the three door nuts until the white rubber gaskets start to compress. Do not overtighten the nuts.
It is unnecessary and will decrease the life of the door rubber gaskets.
Humidity Control
The water in the water reservoir inside the H300 is heated by an internal heater. Depending on the amount
of water in the reservoir, it may take as much as 30 minutes for the water to reach its target temperature.
The H300 chamber can be used before the temperature reaches its target in most cases. However, when
trying to achieve high humidity (above 75%RH) at high temperatures (above 90°F, 32°C), you may have to
wait for the water in the reservoir to heat up.
Note that the water in the reservoir will warm up whenever the H300 is ON, even if the CONT switch is
turned to OFF.
