Preface
This manual provides user information for the Model 156A Charged-Plate Monitor
and contains the following chapters and appendixes:
• Introduction contains a brief product description and describes an incoming
confidence test for the unit.
• Installation contains initial setup information for the Model 156A.
• Operation contains a description of the product’s features and a detailed
explanation of proper operating procedures.
• Specifications states the requirements, behavior, and performance of the
instrument in a concise format.
• Maintenance contains proper care and preventative maintenance guidelines
for the instrument.
• Appendix A: Accessories describes other products that are useful with
the Model 156A.
• Appendix B: Warranty Statement describes terms and conditions of the
Trek Warranty Statement.
• Appendix C: Sales & Service contains Trek contact information.
(Please go to our web site: www.trekinc.com for a complete list of our sales
and service representatives and distributors located in the United States and
throughout the world.)
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