General Radio Company 1644-A Outro
Fabricante:
Modelo:
1644-A
Data:
1964
Categoria:
Grupo:
Descrição:
MEGOHM BRIDGE

Informação

PURPOSE. The Type 1644-A Megohm Bridge (Figure 1-1) measures resistance from 10* to 10l* ohms. It is useful for measurements of resistors, of insulation resistance on components and machinery, for resistivity tests on samples of insulating material, and for leakage-resistance measurements on capacitors. The vernier (AR%) dial permits accurate measurements of voltage and temperature coefficient of resistance. The voltage applied to the unknown may be set from 10 volts to 1000 volts.

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Serviço e Manual do Usuário
Tipo de manual:
Serviço e Manual do Usuário
Páginas:
42
Tamanho:
8.21 Mbytes (8608417 Bytes)
Idioma:
english
Revisão:
ID de manual:
1644-0100-A
Data:
1964 07 01
Qualidade:
Scaned documento, todas legível.
Data de upload:
2016 12 30
MD5:
900d46b3a38abe2f9b3c9a672c05e62d
Downloads:
436

Informação

Section 1. INTRODUCTION ... 1 1.1 Purpose ... 1 1.2 Controls and Connectors ... 1 1.3 Symbols ... 1 Section 2. OPERATING PROCEDURE ... 3 2.1 Installation ... 3 2.2 Basic Measurement Procedure ... 4 2.3 Accuracy ... 5 2.4 Sensitivity ... 5 Section 3. APPLICATIONS ... 6 3.1 Resistor Measurement ... 6 3.2 Insulation Testing ... 6 3.3 Leakage Resistance of Capacitors ... 7 3.4 Guarded (Direct) Three-Terminal Measurements ... 9 3.5 Remote Measurements ... 9 3.6 Substitution Measurements ... 9 3.7 Measurement of Voltage Coefficient ... 11 3.8 Measurement of Temperature Coefficient ... 11 3.9 External Adjustment of the Internal Test Voltage ... 12 3.10 External Test-Voltage Supply ... 12 3.11 Measurements on Very High-Valued Resistors ... 13 3.12 Measurements Under Adverse Conditions ... 13 3.13 Production Limit Testing ... 14 3.14 Battery Operation ... 15 Section 4. THEORY OF OPERATION ... 16 4.1 Bridge ... 16 4.2 Detector ... 17 4.3 Test-Voltage Supply ... 17 Section 5. SERVICE AND MAINTENANCE ... IS 5.1 Warranty ... 18 5.2 Service ... 18 5.3 Removal from Cabinet ... 18 5.4 Bridge Calibration ... 18 5.5 Test-Voltage Adjustments ... 19 5.6 Detector Adjustments ... 20 5.7 Trouble-Shooting ... 21

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