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Electro Scientific Industries 250-DA Analog Multimeter
Hersteller:
Electro Scientific Industries
Modell: 250-DA
Datum: 1960
Kategorie: Messgeräte
Gruppe: Analog Multimeter
Beschreibung: Impedance Bridge
Informationen:
                                    WHAT THE BRIDGE MEASURES
The ESI Model 250-DA Impedance Bridge measures resistance,
inductance and capacitance. It also measures the dissipation
factor (D) and the storage factor (Q) of inductors and
capacitors.
Resistance measurements are usually made with direct current
because of the increased accuracy and the lack of hum pickup
and stray capacitance effects. Resistance measurements can
be made using ac, but they may require external reactance
compensation.
Inductance and capacitance measurements are made in terms of
a simple two-element circuit with the same impedance as the
unknown. The bridge dials read the values of this equivalent
circuit. An equivalent series circuit is used for capacitors
and low Q inductors; an equivalent parallel circuit is used
for high Q inductors.

Folgende Anleitungen sind für obiges Gerät verfügbar:

Electro Scientific Industries -- 250-DA -- Service- und Bedienungsanleitung
Dateiname: ESI-6664-Manual-Page-1-Picture
Dokumenttyp: Service- und Bedienungsanleitung
Seitenanzahl: 75
Dateigröße: 3.10 Mbytes (3246268 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum: Januar 1960
Qualität: Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
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Downloads: 47 seit 11 Mai 2015
Informationen:
Controls
1.1
Circuit Selector
1.2
Multiplier Switch
1.3
Main Dial Assembly
1.4
D-Q Dial
1.5
Unknown Terminals
1.6
External Generator Terminals
1.7
External D-Q Terminals
1—·
.
00
External Detector Terminals
1.9
Detector Switch
1.10
Generator Switch
1.11
Galvanometer
1.12
Power Switch and AC Amplifier Gain
1.13
AC - DC Switch and AC Generator Gain
1.14
DC Generator Voltage Switch
1.15
AC Generator Tuning Network
1.16
AC Detector Tuning Network
1.17
AC Null Indicator
00
•
AC Amplifier Output Terminals
1.19
Fuse
1.20
Power Indicator Lamp
2. Operating Instructions
2.1 What the Bridge Measures
2.2 Resistors
2.2.1 Measuring Resistors
2.2.2 Things to Watch Out For
2.2.3 Measuring AC Resistance
2.3 Inductors
2. 3.1 Measuring Inductors
2.3.2 Series and Parallel Inductance
2.3.3 Things to Watch Out For
2.3.4 Inductance Measurements with DC
2.3.5 AC Voltage Measurement
2.3.6 AC Current Measurement
2.3.7 Sliding Balance
2.3.8 Using an External Q Rheostat
2.4 Capacitors
2.4.1 Measuring Capacitors
2,4.2. Series and Parallel Capacitance
2.4.3 Things to Watch Out For
2.4.4 Capacitance Measurements with DC
2.4.5 AC Voltage Measurement
2.4.6 Extended Leads
2.4.7 Sliding Balance
2.4.8 Using an External D-Q Rheostat
2. 5 Using Bridge Elements
2.5.1 Standard Resistors
2.5.2 DEKASTAT® Variable Resistor
2.5.3 Standard Capacitors
3. Circuit Diagrams
3.1 Series Inductance Bridge
3.2 Parallel Inductance Bridge
3.3 Resistance Bridge
3.4 Series Capacitance Bridge
3, 5 Basic Circuits
3.6 Bridge Circuit Diagram
3.7 Generator-Detector Circuit Diagram
3.8 Bridge Wiring Diagram
3.9 Bridge Parts Placement
3.10 Generator-Detector Parts Placement
4, Bridge Element Voltage and Current Limits
5, Convenient Audio Frequency Units
6, Servicing and Repair
6.1 Preliminary Checking
6.2 Checking Procedure
6*2,1 Test Equipment and Tools
6.2.2 Trouble Shooting Chart
6.2.3 Checking the DC Generator
6.2.4 Checking the Galvanometer
6.2.5 Checking the AC Generator
6.2.6 Checking the AC Detector
6.2.7 Checking the Range Resistors
6.2.8 Checking the Standard Resistors
6.2.9 Checking the MAIN DIAL DEKASTAT*
6.2.10 Checking the D-Q Rheostats
6.2.11 Checking the Standard Capacitor
6.3 Removing the Chassis from the Case
6.3.1 Removing the Chassis
6.3.2 Replacing the Chassis
6.4 Repairing the Bridge
ESI-6664-Manual-Page-1-Picture
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