Lake Shore Model 421 Gaussmeter User’s Manual
Introduction 1-1
CHAPTER 1
INTRODUCTION
1.0 GENERAL
This chapter provides an introduction to the Lake Shore Model 421 Gaussmeter. The Model 421
was designed and manufactured in the United States of America by Lake Shore Cryotronics, Inc.
The Model 421 is a highly accurate gaussmeter well suited for field work. It features:
• Resolution to 4¾ Digits.
• Large Vacuum Fluorescent Display.
• Serial Interface.
• Analog Voltage Outputs.
• Max Hold and Relative Reading.
• Alarm with Relay.
If you have just received your new Model 421, please proceed to Chapter 2 and become familiar with
the installation instructions. Complete and detailed instrument and probe operational information is
contained in Chapter 3. Chapter 4 contains details on remote operation using the Serial Interface.
Details on accessories and probes are provided in Chapter 5. Limited service and rear panel connector
definitions are contained in Chapter 6. Appendix A is a glossary of terminology. Appendix B provides
units for magnetic properties. Finally, Appendix C provides information on Hall sensors and the
Hallcal.exe program.
1.1 PRODUCT DESCRIPTION
The Model 421 Hall Effect Gaussmeter is the Lake Shore answer to the dynamic changes in the
permanent magnet industry. Faster, higher resolution, and more repeatable flux density measurements
are being demanded by manufacturing, quality assurance (QA), and research and development (R&D).
The Model 421 is well suited to meet these requirements at an affordable price. The Model 421 is
compatible with the extensive Lake Shore line of probes, or we can design custom probes to meet your
unique needs. As an added advantage, the Model 421 is provided with one probe of customer choice.
421_Front.bmp
Figure 1-1. Model 421 Gaussmeter Front Panel
To Next Page
