Philips PM 2505 Multimetro analogico
Produttore:
Modello:
PM 2505
Data:
1980
Categoria:
Gruppo:
Descrizione:
Electronic VAΩmeter

Informazioni

The analog electronic multimeter PM 2505 is a universal measuring instrument with 62 measuring ranges. With the optional Accessories the measuring ranges can be extended up to 77. The PM 2505 measures: - ac and dc voltages from 100mV f.s.d. to 1000V f.s.d. - resistances with a linear scale from 100£2 f.s.d. to 30M£2 f.s.d. - ac and dc currents from 1 jUA f.s.d. to 10A f.s.d.. The ranges in the voltage, resistance and current functions are divided in 1-3-10 steps. Separate ranges are available for testing semiconductors ^ 1 and for continuity check with the aid of an internal buzzer ^. The instrument is powered by two 9V batteries which enable continuous measuring for at least 1000 hours.

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Manuale di servizio
Tipo di manuale:
Manuale di servizio
Pagine:
48
Dimensione:
2.02 Mbytes (2113641 Bytes)
Lingua:
english
Revisione:
ID del manuale:
9499 475 01411
Data:
1980 03 01
Qualità:
Documento scansionato, la lettura in parte male, non in parte leggibile.
Data caricamento:
2016 06 19
MD5:
686ef68031af13e2a27c7a50316d4d8f
Scaricamenti:
2049

Informazioni

CONTENTS Page 1. Introduction 5 2. Technical data 5 2.1. Measuring performance 5 2.1.1. D.c. voltage measurements 5 2.1.2. A.c. voltage measurements 6 2.1.3. D.c. current measurements 6 2.1.4. A.c. current measurements 7 2.1.5. Resistance measurements 8 2.1.6. Semiconductor testing i 8 2.1.7. Continuity check *1 {BUZZER mode) 9 2.1.8. dB measurements 9 2.2. General data- 9 2.2.1. Conversion characteristics 9 2.2.2. Display 9 2.2.3. Warm-up time 9 2.2.4. Operating conditions 10 2.2.5. Mechanical data 10 2.2.6. Power requirements 10 2.2.7. Input terminals arrangement 10 2.2.8. Calibration 11 2.2.9. Safety 11 3. Accessories 12 3.1. Accessories delivered with the PM2505 12 3.2. Optional accessories 12 3.2.1. HF Probe PM9210 and accessory set PM9212 12 3.2.2. EHT Probe PM9246 13 3.2.3. Current transformer PM9245 13 3 2 4. Shunt PM9244 13 3 2 5. RF Probe PM9213 16 3.2.6. Carrying case PM9278 16 4. Circuit description 17 4.1. Introduction 17 4.2. Principle of operation 17 4.2.1. V— 1 V 'V' 1 + BATT and - - BATT measurements 17 4.2.2. A 1 and A 'V measurements 17 4.2.3. i2 , i and BUZZER measurements 17 4.2.4. Amplifier 17 4.3. Detailed circuit description 19 4.3.1. V— 1 V 'N' , BATT and — BATT attenuator 19 4.3.2. A zrzrz 11 and A shunts 20 4.3.3. Q, and BUZZER measurements 21 4.3.4. Amplifier and guard circuit 23 4.3.5. Protection 24 5. Acces 29 5.1. General 29 5.2. Dismantling the PM2505 29 5.3. Replacing parts 29 5.3.1. Slide switch ON/OFF or 1'''1 29 5.3.2. Range switch 29 5.3.3. Polarity indicator 30 6. Checking and adjusting 31 6.1. General - 31 6.2. Adjusting table 32 7. Parts list 34 7.1. Mechanical 34 7.2. Electrical 36 7.2.1. Capacitors 36 7.2.2. Resistors 37 7.2.3. Semiconductors 39 7.2.4. Integrated circuits 39 1. Measuring leads with test pins PM9262 12 2 HF-probe PM9210 14 3. Accessory set PM9212 14 4 HT Probe PM9246 14 5. Current transformer PM9246 14 6 Shunt PM9244 14 7. RF-probe PM9213 16 8. Blockdiagram 18 9. V—, V 'V ,‘+BATT and — BATT attenuators 19 10. A— , and A shunts 20 11 f2 1 ± 1 BUZZER measurements principle 21 12. £2 $ , BUZZER current source 22 13 Feed back circuitry 23 14. Amplifier and buffer circuit 26 15 Protection 24 16 Full scale deflection values 28 17. Measuring system 30 18 Replacing the polarity indicator 30 19. Adjusting elements 31 20. p.c. board component side 40 21. p.c. board conductor side 41 22. Function switch lay-out component side 42 23. Function switch lay-out conductor side 42 24. List of used components 45 25. Circuit diagram 45

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