"Vaiseshika" Portable Wheatstone Bridge Type : 9401
Description
"VAISESHIKA"
Portable Wheatstone Bridge Type 9401 has been specially
designed for the measurement of resistances in the range 0.01
ohm to 1.0 Megohm. The resistance measurement spectrum
provided in the equipment is coupled with excellent accuracy
of the order of ±0.05%. These exquisite capabilities have been
realized in this equipment by using non-inductive imported
manganin wire (GERMAN MAKE). In addition, precision
phosphor-bronze silver plated band switches have been utilized
to minimise the contact resistance errors to 0.0005 ohm per
switch. The manganin coils have been subjected to long ageing
process to eliminate the possible variations in the resistive
value due to climatic temperature variations.
All the coils have
been properly insulated with high grade insulation material to
arrest the variation in the values.
A built-in taut suspension galvanometer, having high order sensitivity and resolution, has been provided to obtain a very sharp and accurate null point. This galvanometer has been provided with built-in systems to obtain critical damping conditions in all settings alongwith constant terminal resistance. Terminal connections are available in the instrument to connect the bridge to an external battery for more precision measurements. Similarly any spot deflection galvanometer can be equally connected externally at separate terminations.
"VAISESHIKA" Portable Wheatstone Bridge Type 9401 has multiple facilities. The same instrument can be used in different universal applications. The instrument can be used to measure the resistances with ±0.05% accuracy. It can also be used to locate faults in cables by Varley and Murray Lop Test. Above all the instrument can be used as standard resistance substitution box of accuracy ±0.05%. This instrument can find indispensable applications in cable manufacturing industries, Telecommunication Equipment Industries, Chemical, Petro-complex and refineries, Instrumentation, Electronic equipment centres, research and development centres and educational/engineering institutions.
Features
Ideal for fault location in
cables by Varley and Murray Loop Test
Battery as well as mains
operated
Portable and completely
self-contained
Self-cleaning and hard silver
plated low contact resistance switches
Precision co-efficient of
thermal linear expansion
Built-in taut suspension
galvanomete
Manganin wire having very low
temperature co-efficient
Wide measurement capability
from 0.01 ohm to 1.0 Megohm
Specification
Resistance Range
: 0.01 ohm to 1.0 Megaohm
Series Arm
: 10 x 1000, 10 x 100, 10 x 10, 10 x 1 ohm totalling to 11,110 ohms
Ratio Arm
: Seven ratio arms having the
multiplier of x1000; x100; x 10; x 1; x 0.1; x 0.01;
and
0.001
