Kelvin Double Bridge
Model ETK0018
Standard Resistance in steps of 0.01 ohm in series with a calibratedslidewirs
100 divisions equal to 0.01, ohms Rotary type multiplier switch 0.01,
0.1, 1, 10 and 100 gives a range of measurement 0.000001 to 1.1 ohm.
Industrial Kelvin Double Bridge:
Standard resistance :
There are 10 coils of 0.01 ohm each arranged on rotary dial plus a circular slidewire of total resistance 0.01 ohm and 500 sub divisions. Each sub-divison is equal to 0.00002 ohms on the normal range.
Conductivity attachment :-
It is an arrangement to hold Specimens in the form of wires rods, strips etc. Distance between potential points is 500 mms, potential terminals are provided.
Multiplying Ratio :-
• A single rotary switch furnishes 3 multiplying ratios of x1, x0.1 and x0.01
Range of Measurement :-
• 1 to 0.00001 ohms on different ranges.
• Maximum Current : 2 amperes
• Panel :- A backlite panel enclosed in a teak wood box is used, Separate current and potential terminals, battery and galvanometer terminals, push buttons for battery and galvanometer are provided on the panel.
• Accuracy :- + 0.1%
• Coils :- Manganin Coils are used
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