• Country
• United States of America (USA)

• Manufacturer / Brand
• Hewlett-Packard, (HP); Palo Alto, CA

• Year
• 1968

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 340609

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115/230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Milliohmmeter 4328A - Hewlett-Packard, HP; Palo Alto

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 130 x 155 x 279 mm / 5.1 x 6.1 x 11 inch

• Notes

• The HP 4328A Milliohmmeter has the following features:

  • Uses Kelvin Bridge method (4-wire: I+, I-, V+, V-).
  • Range: 0.001 to 100 Ω full scale, in a 1, 3, 10 sequence.
  • Accuracy: +/-2% of full scale.
  • Maximum Sensitivity: 20 uΩ.
  • Circuit measurement uses a 1 kHz ac drive signal; allows up to 150 VDC bias without affecting the accuracy.
  • Maximum voltage across the unit-under-test (UUT) is 20mV peak, which allows explosive devices such as fuses and squibs to be safely tested.
  • Option 01 is a 4-rechargable battery pack for 15 continuous hours of battery operation ($25).

• Net weight (2.2 lb = 1 kg)
• 3.2 kg / 7 lb 0.8 oz (7.048 lb)

• Price in first year of sale
• 450.00 USD

• Literature/Schematics (1)
• -- Original-techn. papers.

• Literature/Schematics (2)
• 1968 Hewlett-Packard Instrumentation Electronic Analytical Medical catalog, page 218

• Author
• Model page created by Otto Hauser. See "Data change" for further contributors.

• Other Models

• Here you find 392 models, 360 with images and 138 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hewlett-Packard, (HP); Palo Alto, CA