Equipment information

Electro Scientific Industries 250DE Analog multimeter
Manufacturer
Electro Scientific Industries
Model 250DE
Date 1967
Category: Measurement instruments
Group Analog multimeter
Description Impedance Bridge
Information
                                    The esi Model 250DE Impedance Bridge is an instrument that
measures resistance, inductance, capacitance, and the
dissipation factor (D) and the storage factor (Q) of
inductors and capacitors.
The instrument is battery operated and completely portable.
An internal generator supplies ac and dc, and an internal
solid-state ac-dc detector indicates bridge balance

These manuals are available for the above equipment:

Electro Scientific Industries -- 250DE -- Service and User Manual
File name ESI-6666-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 56
Size 9.50 Mbytes (9958791 Bytes)
Language english
Revision revised
Manual-ID/Number 13202
Date April 1967
Quality Scanned document, reading partly badly, partly not readable.
Upload date
MD5 9b998c4e020c2eb4efcf5f72988fff53
Downloads 182 since 11 May 2015
Information
!. INTRODUCTION 1-1
1.1 DESCRIPTION 1-1
1.2 SPECIFICATIONS 1-2
II. OPERATION
2.1 CONTROLS 2-1
2.2 CONNECTIONS 2-2
2.3 BASIC OPERATION 2-2
III. RESISTANCE MEASUREMENT
3.1 DC RESISTANCE MEASUREMENT 3-1
3.2 AC RESISTANCE MEASUREMENT 3-3
3.3 NOTES ON RESISTANCE MEASUREMENT 3-5
3.3.1 Low Resistance 3-5
3.3.2 High Resistance 3-5
IV. CAPACITANCE MEASUREMENT
4.1 NORMAL CAPACITANCE MEASUREMENT 4-1
4.2 CAPACITANCE MEASUREMENT WITH EXTENDtD D RANGE 4-3
4.3 CAPACITANCE MEASUREMENT USING DC BIAS 4-5
4.3.1 DC Bias Supply 4-5
4.3.2 Operating Procedure 4-6
4.4 VOLTAGE ACROSS UNKNOWN CAPACITOR 4-8
4.5 NOTES ON CAPACITANCE MEASUREMENT 4-9
4.5.1 Series and Parallel Capacitance 4-9
4.5.2 Low Capacitance Measurements 4-9
4.5.3 High Capacitance Measurements 4-10
V. INDUCTION MEASUREMENT
5.1 NORMAL INDUCTANCE MEASUREMENTS 5-2
5.2 INDUCTANCE MEASUREMENT WITH EXTENDED Q RANGE 5-3
5.2.1 Preliminary Procedure 5-3
5.2.2 Parallel Inductance 5-3
5.2.3 Series Inductance 5-4
5.3 INDUCTANCE MEASUREMENT USING DC 5-6
5.3.1 DC Supply 5-6
5.3.2 Operating Procedure 5-6
5.4 VOLTAGE AND CURRENT IN UNKNOWN INDUCTOR 5-9
5.4.1 Voltage 5-9
5.4.2 Current 5-10
5.5 NOTES ON INDUCTANCE MEASUREMENT 5-11
5.5.1 Series and Parallel Inductance 5-11
5.5.2 Low-lnductance Measurements 5-12
5.5.3 High-lnductance Measurements 5-12
IV. USEFUL MEASUREMENT TECHNIQUES
6.1 EXTERNAL DETECTOR 6-1
6.2 EXTERNAL DC GENERATOR 6-2
6.3 EXTERNAL AC GENERATOR 6-3
6.4 OPERATION AT FREQUENCIES OTHER THAN ONE KILOHERTZ
6.4.1 D and Q Corrections
6.4.2 Accuracy
6.5 SLIDING BALANCE
6.6 EXTEND LEADS WITH AC MEASUREMENTS
VII. REPLACEMENT PARTS
ESI-6666-Manual-Page-1-Picture
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