Product Categories

Industrial Kelvin Double Bridge

TYPE: 9404

Industrial Kelvin double Bridges Type : 9404 are important instruments in the measurement of resistance as low as 0.2 Micro ohms to highest value of 11 ohms. Industrial Kelvin Bridges employ 10 Standard Resistors drawn from well aged manganin sheet having excellent stability & reproducibility. Manganin has the quality of very low temperature co-efficient which is a critical parameter for resistance standards manufacturing. Four standard decade dials, ratio selector & plug keys facilitate accurate null detection.

Precision measurement range from 0.02 microhm to 11 ohm.
Oil-immersed slide wire.
Four terminals for accurate results.
Manganin wire having exceptionally low temperature co-efficient.
Remarkably long lasting resistance values with excellent stability.
Reproducible measurements.
Perfectly aged Manganin coils / strips employed in Kelvin Bridges.
Click type hard silver plated self-cleaning switches.
Wonderful elastic limits of MANGANIN.
Oil immersed slide wire in kelvin double bridge.
Solid brass blocks for positive plug contacts
Excellent calibration stability.
Specification
 Range of measurement : 0.02 micro-ohm to 11 ohm
 Accuracy :Below 0.0001 ohm
:0.0001 ohm to 0.01ohm
:above 0.01 ohm
+/- 0.2%
+/- 0.1%
+/- 0.05%
or +/- 1 slide wire division
 Slide wire : 0.001 ohm divided in 500 equal divisions. (immersed in oil)
 Variable standard resistance : 10 steps of 0.001 ohm
Range Factor Setting   Total Range   Resolution
  0.01   0.0011 ohm   0.2 micro-ohm
  0.1   0.011 ohm   2.0 micro-ohm
  1.0   0.11 ohm   20 micro-ohm
  10   1.1 ohm   0.2 milli-ohm
  100   11.0 ohm   2.0 milli-ohm
 Switches : Hard silver plated giving constant values up to 10,000  operations
 Current source : 10 Amp DC.
 Dimensions : 48(L) x 30(B) x 17(H) cm. (Approx)
 Weight : 7 Kg. (Approx)
Scroll to Top