Equipment information

Electro Scientific Industries 250DE Analog multimeter
Manufacturer:
Model:
250DE
Date:
1967
Category:
Group:
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

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
56
Size:
9.50 Mbytes (9958791 Bytes)
Language:
english
Revision:
revised
Manual-ID:
13202
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2015 05 11
MD5:
9b998c4e020c2eb4efcf5f72988fff53
Downloads:
920

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

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