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Low

BS407 - 

Ohmmeter, 4-Wire, 1µohm to 20kohm, 1 µohm, 250 mA, ± 0.1%, 88 mm

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Manufacturer Part No:
BS407
Order Code:
3812364
Technical Datasheet:
BS407   Datasheet
See all Technical Docs

Product Information

:
4-Wire
:
1µohm to 20kohm
:
1µohm
:
250mA
:
± 0.1%
:
88mm
:
220mm
:
230mm
:
1.3kg
:
-
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Product Overview

The BS407 is an instrument which is fully optimised for the task of accurate measurement of low resistances with a best resolution of 1µR. Most multimeters offer a best resolution which is at least one thousand poorer than this. A very high resolution multimeter may attempt to resolve fairly low resistances, but it does so by resolving extremely low voltages (typically one nano-volt per micro-ohm), making it subject to severe errors from thermal emf effects and noise. In contrast, the BS407 generates sufficient test voltage across the unknown resistance to combat noise and reduce thermal emf effects to manageable levels. Current reversal can then be used to eliminate any remaining thermal offset.
  • High basic accuracy of 0.1%
  • Wide measurement range of 1µR to 20kR
  • Current reversal switch for detecting thermal EMF effects
  • Current diversion switch for easy zero setting
  • Four terminal measurement using Kelvin clip leads
  • Battery operation with built-in charger
  • Switchable 20mV clamp for 'dry circuit' testing

Applications

Sensing & Instrumentation, Signal Processing, Test & Measurement

Contents

Kelvin Test Clip Leads, Operating Manual & IEC Mains Lead.

Footnotes

Calibration services available for this product. Choose from a Standard Certificated Service or an internationally recognised UKAS accredited calibration. Visit our calibration page for more details.

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