Ludlum MODEL 3 Manuals

Ludlum MODEL 3 Manuals

Manuals and User Guides for Ludlum MODEL 3. We have 1 Ludlum MODEL 3 manual available for free PDF download: Technical Manual

Ludlum MODEL 3 Technical Manual

Ludlum MODEL 3 Technical Manual (43 pages)

SURVEY METER

Brand: Ludlum | Category: Measuring Instruments | Size: 8 MB

Table of Contents

Statement of Warranty
3
Table of Contents
5
Introduction

7
Getting Started

8
- Unpacking and Repacking
  8
- Battery Installation
  8
- Connecting a Detector to the Instrument
  9
- Battery Test
  9
- Instrument Test
  9
- Reading the Meter Face Dial
  10
- Operational Check
  13
Specifications

14
Identification of Controls and Functions

16
Safety Considerations

18
Calibration and Maintenance

20
- Calibration
  20
  - Exposure Rate Calibration
    21
  - CPM Calibration
    22
  - Establishing an Operating Point
    23
- Maintenance
  24
  - Recalibration
    24
  - Batteries
    25
Troubleshooting

26
Technical Theory of Operation

30
- Low-Voltage Supply
  30
- High-Voltage Supply
  30
- Detector Input
  30
- Amplifier
  30
- Discriminator
  31
- Audio
  31
- Scale Ranging
  31
- Meter Drive
  31
- Meter Reset
  31
- Fast/Slow Time Constant
  31
Recycling

32
Parts List

33
Drawings and Diagrams

37

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