Preface
iv Model PM880 Portable Hygrometer User’s Manual
Qualification of Personnel
Make sure that all personnel have manufacturer-approved training applicable to the 
auxiliary equipment.
Personal Safety Equipment
Make sure that operators and maintenance personnel have all safety equipment 
applicable to the auxiliary equipment. Examples include safety glasses, protective 
headgear, safety shoes, etc.
Unauthorized Operation
Make sure that unauthorized personnel cannot gain access to the operation of the 
equipment.
Environmental Compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
GE Measurement & Control Solutions is an active participant in Europe’s Waste 
Electrical and Electronic Equipment (WEEE) take-back initiative, directive 
2002/96/EC.
The equipment that you bought has required the extraction and use of natural 
resources for its production. It may contain hazardous substances that could impact 
health and the environment.
In order to avoid the dissemination of those substances in our environment and to 
diminish the pressure on the natural resources, we encourage you to use the 
appropriate take-back systems. Those systems will reuse or recycle most of the 
materials of your end life equipment in a sound way.
The crossed-out wheeled bin symbol invites you to use those systems.
If you need more information on the collection, reuse and recycling systems, please 
contact your local or regional waste administration.
Visit http://www.ge-mcs.com/en/about-us/environmental-health-and-
safety/1741-weee-req.html for take-back instructions and more information 
about this initiative.