Product Details

Product Name :

Resistance Box : Dial Type (Constantan & Manganin)

   

Catalog No :

872

   
Download PDF Enquiry
 

DESCRIPTION :

General :BESTO Decade Resistance Boxes incorporate the latest design switches so as to ensure low contact resistance. The moving contacts are constructed from phosphor-bronze lamination to ensure long life and repeatability of results. Eleven position switches are employed.

Panel :An insulating panel of bakelite enclosed in an elegantly polished teak wood box.

Resistance Coil:Resistance Coils are non-inductively wound, properly varnished and aged for permanence of values over a long period. Imported double silk covered manganin or constantan wire is used in Grade A and Grade B resistance boxes separately. Manganin has a negligible temperature coefficient against copper.

Accuracy :Accuracy is brought within the field ±0.05% to ±0.1% for constantan coils (B Grade) and ± 0.02% to ±0.05% for manganin coils (A Grade)

Contact Resistance :
Contact Resistance per decade is of the order of 0.0015 ohm.

 

Range (CONSTANTAN COIL) Accuracy +0.05% to 0.1%Range (MANGANIN COIL) Accuracy +0.02% to 0.05%
864 Single Dial 0.01Ω to 0.1 Ω 882 Single Dial 0.01Ω to 0.1Ω
865 Single Dial 0.1Ω to 1Ω 883 Single Dial 0.1Ω to 1Ω
866 Single Dial 1Ω to 10Ω 884 Single Dial 1Ω to 10Ω
867 Single Dial 10Ω to 100Ω 885 Single Dial 10Ω to 100Ω
868 Single Dial 100Ω to 1000Ω 886 Single Dial 100Ω to 1000Ω
869 Single Dial 1000Ω to 10000Ω 887 Single Dial 1000Ω to 10000Ω
870 Double Dial (0.01×10 & 0.1×10)ohms 888 Double Dial (0.01×10 & 0.1×10)ohms
871 Double Dial (0.1×10 & 1×10)ohms 889 Double Dial (0.1×10 & 1×10)ohms
872 Double Dial (1×10 & 10×10)ohms 890 Double Dial (1×10 & 10×10)ohms
873 Double Dial ( 10×10 & 100×10)ohms 891Double Dial ( 10×10 & 100×10)ohms
874 Three Dial having 0.01, 0.1 & 1Ω 892 Three Dial having 0.01, 0.1 & 1Ω
875 Three Dial having 0.1, 1 & 10Ω 893 Three Dial having 0.1, 1 & 10Ω
876 Three Dial having 1,10 & 100Ω 894 Three Dial having 1,10 & 100Ω
877 Four Dial having 0.1, 1, 10 & 100Ω 895 Four Dial having 0.1, 1, 10 & 100Ω
878 Four Dial having 1,10,100, 1000Ω 896 Four Dial having 1,10,100, 1000Ω
879 Five Dial having 0.1, 1,10,100 & 1000Ω 897 Five Dial having 0.1, 1,10,100 & 1000Ω
880 Five Dial having 1,10, 100, 1000 & 10000Ω 898 Five Dial having 1,10, 100, 1000 & 10000Ω
 

+91 171 4008943

Monday - Friday: 9:00- 17:00

info@bestoinstruments.com

Drop Us a mail anytime.

Request a Quote

Get All the Information