APO Multimeter No. 2A

Master Instruments Pty. Ltd., Sydney

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1963 ??
  • Categoria
  • Strumento da laboratorio
  • Radiomuseum.org ID
  • 348348

 Specifiche tecniche

  • Gamme d'onda
  • - senza
  • Tensioni di funzionamento
  • Batterie a secco / B121: 1 x 15, D: 1 x 1.5 Volt
  • Altoparlante
  • - - Nessuna uscita audio.
  • Materiali
  • Plastica (non bachelite o catalina)
  • Radiomuseum.org
  • Modello: APO Multimeter No. 2A - Master Instruments Pty. Ltd.,
  • Forma
  • Apparecchio portatile > 20 cm (senza la necessità di una rete)
  • Annotazioni

  • The APO No. 2A is a rugged instrument designed for general-purpose field use by telecommunications technicians in the Australian Post Office (Telecom Australia) and military services.

    The meter has a basic internal resistance on voltage ranges of 1000 Ohms/V and the stated accuracy is better than 1.5% on DC voltage and 2% on AC voltage.

     A single range switch covers AC and DC voltages to 1000 V and DC current from 1 mA to 10 A.

    The front panel includes a separate probe socket to allow measuring the internal resistance of single 1.5 V cells which were used as local battery microphone supplies on magneto telephone services in country regions and military field telephones.

    The internal batteries consist of a single 1.5v cell for the Ohms x1, x10, and x100 ranges and a 15V (Eveready 411 or B121), battery for the Ohms x1000 range. 

    See also the later Model APO No. 3 which has an additional AC Current range.

  • Autore
  • Modello inviato da Gary Cowans. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

 Forum