Chapter 1 ________________________________________________________ General Information
VAISALA _______________________________________________________________________ 11
Safety
Vaisala Present Weather Detector PWD22/52 delivered to you has been
tested for safety and approved as shipped from the factory. Note the
following precautions:
WARNING
The chassis of the PWD22/52 must be connected to a good electrical
earth.
WARNING
Do not touch the surface of the RAINCAP
®
Rain sensor plate. When you
need to touch the sensors plate, for example during cleaning, touch first
metallic part of PWD22/52 to discharge possible electrostatic load of
your body. The measuring principle does not allow for proper ESD
protection.
WARNING
Do not operate the equipment in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.
WARNING
A lightning strike through a communication wire can cause voltage surge
dangerous to life at remote sites if the remote units are not properly
grounded.
CAUTION
Do not modify or substitute parts in the instrument. Contact Vaisala or its
authorized representative for repairs.
CAUTION
The component boards including CMOS microchips should be
transported and stored in conductive packages. Although new CMOS
devices are protected against overvoltage damages caused by static
electric discharge of the operator, careful handling is recommended: the
operator should be properly grounded. Unnecessary handling of
component boards should be avoided.
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