Ceilometer CT25K
CT25K-U059en-2.1 User’s Guide
71
Figure 5-14 CTP241 Wiring
Line voltage selection 100...115 VAC or 220...240 VAC is carried out in the
CTP241 by an internal switch, the setting of which is written on the label on
the subassembly. This setting also accomplishes the series vs. parallel
connection of Internal Heater resistors.
NOTE
For complete power disconnection, both the main switch
at CTP241 and the battery switch must be turned to
position "OFF". Otherwise the unit is still supplied
through the batteries and higher voltage levels inside the
unit are possible although the line voltage is disconnected.
For normal operation, both switches must be turned to
position "ON".
Some of the electronics subassemblies are provided with integral voltage
regulators, which internally regulate the actual voltage necessary for
operation.
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