Lake Shore 480 Manuals

Manuals and User Guides for Lake Shore 480. We have 1 Lake Shore 480 manual available for free PDF download: User Manual

Lake Shore 480 User Manual

Lake Shore 480 User Manual (132 pages)

Fluxmeter

Brand: Lake Shore | Category: Measuring Instruments | Size: 7.01 MB

Table of Contents

Table of Contents
7
Introduction

13
- General
  13
- Product Description
  13
- Specifications
  14
- Safety Summary
  16
- Safety Symbols
  16
Magnetic Measurement Overview

17
- General
  17
- Integrating Instruments
  17
- What Is an Integrator
  17
- Why Integrators Are Used for Magnetic Measurement
  17
- Important Integrator Characteristics
  18
- Reducing Integrator Drift
  19
- Dielectric Absorption
  19
- Analog Versus Digital Integrators
  20
- Fluxmeter Measurements in Magnetizers
  20
- Making AC Measurements
  22
- Coil Characteristics
  22
- Coil Sensitivity
  22
- Coil Size
  23
- Coil Resistance
  23
- Coil Temperature Coefficient
  24
- Coil Orientation
  24
- Field Uniformity
  25
- Lead Pickup
  25
- Inductance, Capacitance, and Self Resonance
  25
- Lake Shore Coils and Probes
  25
- Flux Overview
  26
- Flux Density Overview
  26
- What Is Flux Density
  26
- How Flux Density (B) Differs from Magnetic Field Strength (H)
  27
- Magnetic Moment Overview
  27
- What Is Magnetic Moment
  27
- Important Parameters of a Hemholtz Coil
  27
- Hemholtz Coil Constant Determination (for Non-Lake Shore Coils)
  28
- Magnetic Potential Overview
  29
- What Is Magnetic Potential
  29
- Important Parameters of a Potential Coil
  29
Setup

31
- General
  31
- Receiving the Model 480
  31
- Inspection and Unpacking
  31
- Repackaging for Shipment
  31
- Rear Panel Definition
  32
- Line Input Assembly
  32
- Line Voltage and Fuse Verification
  32
- Power Cord
  32
- Power Switch
  32
- Model 480 Rear Panel
  32
  - Coil Input Connection
    33
  - Probe Input Connection
    33
  - Attachment to a Non-Lake Shore Coil
    33
  - Terminal Block
    34
  - Alarm Relay Connection
    34
  - Analog Output Connections
    34
  - External Reset Connections
    34
  - Optional Input Connection
    34
Basic Operation

35
Advanced Operation

43
- General
  43
- Units Selection
  43
- Coil Parameters
  44
- Coil Setup
  44
- Input Resistance
  45
- Coil Resistance
  46
- Number of Turns (N)
  46
- Area (A)
  46
- Area Turns (AN)
  47
- Helmholtz Constant
  47
- Potential Constant
  47
- Making Measurements in Percent
  48
- Before Using Set Percent
  48
- Set Percent (%)
  48
- Percent Scale Factor
  48
- Coil Calibration
  49
- Before Using Coil Calibration
  49
- Calibrating a Coil
  49
- Coil Select and Parameter Storage
  49
- Storing New Coil Parameters into Instrument Memory
  50
- Storing New Coil Parameters into Probe Memory
  50
- Selecting Saved Coil Parameters
  50
- Range Selection
  51
- Reading Reset
  51
- Drift Adjustment
  52
- Automatic Drift Adjustment
  52
- Manual Drift Adjustment
  53
- Drifttrak
  53
- DC and Ac Measurement Modes
  54
- DC Measurement Mode
  54
- AC Measurement Mode
  55
- Model 480 AC Frequency Response
  55
  - Peak Hold and Peak Reset
    56
  - Peak Hold in DC Mode
    56
  - Peak Hold in AC Mode
    56
  - Activating Peak Mode
    56
  - Peak Reset
    57
  - Choosing Positive, Negative or both Peaks
    57
  - Filter
    57
  - Display Resolution
    58
  - Alarm and Relay Operation
    58
  - Alarm Setup
    59
  - Relay Setup
    60
- Examples of Alarm Activation Inside and Outside High and Low Setpoints
  60
  - Turning Alarm on and off
    61
  - Analog out Operation
    61
  - Corrected Analog Output
    61
  - Monitor Analog Output
    62
  - External Reset
    63
  - Optional Input
    63
  - Locking and Unlocking the Keypad
    63
  - Resetting to Default Values
    64
Computer Interface Operation

67
Accessories, Coils, and Probes

103
- General
  103
- Accessories
  103
- Field Measuring Probes
  105
  - CM Field Probe
    105
- CM 2 Field Probe
  105
  - CM Field Probe
    106
  - Helmholtz Coils
    107
- Model FH-2.5 Helmholtz Coil
  107
- Model FH-6 Helmholtz Coil
  108
- Model FH-12 Helmholtz Coil
  108
  - Reference Magnets
    109
- Lake Shore Reference Magnets
  109
- Model RM-1/2 Half-Rack Mounting Kit
  110
- Model RM-2 Dual Rack-Mount Shelf
  110
Service

111
- General
  111
- General Maintenance Precautions
  111
- Electrostatic Discharge
  111
- Identification of Electrostatic Discharge Sensitive Components
  112
- Handling Electrostatic Discharge Sensitive Components
  112
- Line Voltage Selection
  112
- Fuse Replacement
  113
- Power Fuse Access
  113
  - Rear Panel Connector Definitions
    114
- COIL INPUT Connector Details
  114
- PROBE INPUT Connector Details
  114
- Relays and Analog Signals Terminal Block
  115
- SERIAL I/O Connector Details
  115
  - Serial Interface Cable Wiring
    116
  - IEEE-488 Interface Connector
    117
- IEEE-488 Rear Panel Connector Details
  117
  - Top of Enclosure Removal and Replacement
    118
  - Removal Procedure
    118
  - Installation Procedure
    118
  - Eprom Replacement
    118
  - Error Messages
    119
  - Calibration Procedure
    120
  - Required Equipment List
    120
  - A/D Reference Voltages
    120
  - Initialize for Calibration
    120
  - AC Peak Offset
    121
  - AC RMS and AC Peak Gain Calibration
    121
  - DC and DC Peak Calibration
    122
  - Output Calibration
    123
  - Finalize Calibration
    124
Appendix A - Glossary of Terminology

125

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