ENGLISH
THERMISTOR FOR
SMART DEWHEATER
CONTROLLERS
# 94037
INS TRUC TION MANUAL
The Thermistor for Smart DewHeater Controllers is required for automatic
"smart control" of a non-Celestron heating band or heating strip with the
Celestron Smart DewHeater Controllers. The thermistor allows the controller
to detect how much heat the heating band is applying to the telescope.
Along with the controller's integrated environmental sensor, the thermistor
helps determine how much power the heating band needs to keep the
optics free from dew. This system provides the most efficient power usage
for dew prevention, greatly extending battery life. If you choose not to use
the thermistor, you can only set the heating band power manually. If you are
using a Celestron Dew Heater Ring, this thermistor assembly is not required,
as the ring already has a built-in thermistor.
If you are using another manufacturer's heating band or strip, it needs an
RCA-type plug to connect to the controller's heater output ports. Connect
the heating band to the telescope and connect its plug to one of the
controller's dew heater ports. Then, place the tip of the probe thermistor
under the heating band (Figure 1). We suggest using tape to secure it firmly
in place.
Fig. 1: Place the thermistor under the heating band so that it is secure
.