OhmLabs-100-0 Zero Ohm Standard
OhmLabs-100-0  Zero Ohm Standard

OhmLabs-100-0 Zero Ohm Standard

Leverandør: Ohm-Labs
Varenummer: OhmLabs-100-0
PDF Download: Hent databladet her
Total er incl. moms: DKK 4.687,50
Total er excl. moms: DKK 3.750,00
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Zero Ohm Standard (100-0)

  • BALANCED TETRAJUNCTION DESIGN
  • A TRUE ZERO-OHM RESISTOR
  • IDEAL FOR METER CALIBRATION

Ohm-Labs' 100-0 Zero Ohm Standard is a four wire zero ohm reference for verifying long scale multimeters, micro-ohmmeters, or other equipment requiring a true, short-circuit check.

Zero ohms in any connection configuration is achieved by using a tetrajunction. A tetrajunction is an ideal connection of four wires, such that current passed through any two creates no potential drop across the other two.

Based on work performed by B. V. Hamon and others at NIST (formerly NBS), a 'copper disc and post' construction was evaluated, and subsequently commercialized in Leeds & Northrup's Hamon Transfer Standards.

Verification of the 100-0 standard can be performed by passing current through various pairs of terminals and noting the potential at the remaining pair.

The 100-0 is factory adjusted to less than 50 nano-ohms in any connection configuration. The tetrajunction will not measurably drift over time.

The binding posts are of gold plated, low thermal emf tellurium copper. A case ground is provided for reduction of electrical interference.

Specifications

Resistance < 50 nano-ohms
Current Up to 5 amps continuous
Size 90x64x60 (3.5x2.5x2.25 in)
Weight 300 g (1.2 lbs)
Environmental 20-40 °C, 10-90 %RH
Storage -40+65 °C, 0-95 %RH
Warrantee Five years