Hewlett Packard 434A Измеритель уровня
Manufacturer:
Model:
434A
Date:
1959
Category:
Group:
Description:
Calorimetric Power Meter

Information

Model 434A is a power meter which bridges the gap between bolometric methods and conventional calorimetric methods while retaining the advantages of both. Bolometric methods of power measurement using the self-balancing principle are fast, but the upper limit of power measurement is quite low (10 to 100 mw). On the other hand, conventional calormetric methods are slow, and are not suitable at powers less than about 1 watt. By combining the self-balancing principle with a calorimetric device, fast response has been obtained over the range from 1 milliwatt to 10 watts.

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Обслуживание и Руководство пользователя
Manual type:
Обслуживание и Руководство пользователя
Pages:
40
Size:
2.47 Mbytes (2592667 Bytes)
Language:
english
Revision:
Manual-ID:
434A001
Date:
01 January 1959
Quality:
Сканированный документ, читая частично плохо, частично не читается.
Upload date:
30 December 2017
MD5:
931f42c04d589161331a671b86fba64b
Downloads:
385

Information

Serial 151 and above. SECTION I GENERAL DESCRIPTION Page 1-1 Introduction ... 1-1 1-2 Specifications ... 1-1 1-3 Damage in Transit ... 1-1 1-4 Installation ... 1-1 SECTION II OPERATING INSTRUCTIONS 2-1 Introduction ... II - 1 2-2 Controls and Terminals ... II - 1 2-3 Operating Precautions ... n-1 2-4 Filling the Reservoir ... II - 1 2-5 Operating Procedure ... II - 1 2-6 Attainable Accuracy ... II - 1 SECTION III THEORY OF OPERATION 3-1 Introduction ... Ill - 1 3-2 Over-all Operation ... Ill - 1 3-3 Input Bridge ... in - 1 3-4 AC Amplifier, Synchronous Detector, and Filter ... Ill - 2 3-5 DC Amplifier and Clamp ... Ill - 2 3-6 Range Switch ... Ill - 2 3-7 Meter Circuit ... Ill - 2 3-8 Oscillator ... Ill - 2 3-9 Power supply and Voltage Regulator ... in - 3 3-10 Oil System ... HI - 3 SECTION IV MAINTENANCE 4-1 Introduction ... IV-1 4-2 Cabinet Removal ... IV-1 4-3 Periodic Maintenance ... IV-1 4-4 Conversion to 230 Volt Operation ... IV-1 4-5 Tube Replacement Chart ... IV-1 4-6 Cleaning the Oil Filter ... IV - 2 4-7 Power supply Adjustment ... IV-2 4-8 Oscillator ... IV-2 4-9 Synchronous Detector ... IV-2 4-10 Adjust DC Zero ... IV-3 4-11 Adjust Phase Balance ... IV-3 4-12 Adjust Bridge Balance ... IV-3 4-13 Clamp Operation Check ... IV-3 4-14 Over-all Check ... IV-5 4-15 Measuring Compensated Error ... IV-5 4-16 Trouble Location ... IV-6 4-17 Measuring Gain ... IV-6 4-18 Excessive Compensated Error ... IV-6 4-19 Removing Head Box Assembly ... IV-6 SECTION V TABLE OF REPLACEABLE PARTS 5-1 Table of Replaceable Parts ... V-l

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