Portable Potentiometer PP322

Foster Instrument Co. Ltd.; Letchworth

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  • Year
  • 1950 ??
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 354366

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Batteries / addl. power jack / RM42R: 1 x 1.345 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Portable Potentiometer PP322 - Foster Instrument Co. Ltd.;
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 320 x 240 x 130 mm / 12.6 x 9.4 x 5.1 inch
  • Notes

  • Portable Potentiometer for pyrometer testing.

    PP320 provides accurate measurements of millivolt signals in two ranges. 0-20 mV or 0-60 mV.

    For certain thermocouples, the temperature can be directly read from the scale. Adjustments are provided for temperature variation of the cold junction. The instrument also incorporates a high-resistance millivolt source for the calibration of electronic recorders.

    Variants PP321 & PP322 also provide a low-impedance millivolt source for the calibration of current indicators and variant PP322 has an additional resistance measuring facility for resistances up to 200 ohms.

  • Net weight (2.2 lb = 1 kg)
  • 5 kg / 11 lb 0.2 oz (11.013 lb)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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