Precision Vernier Potentiometer

Model : 55X-VP

DESCRIPTION:-

“RAI” Precision Vernier Potentiometer Model no.:- 55X-VP is designed for the measurement of voltage & current of a high order of accuracy. It can be used as a laboratory standard; for routine or accurate measurement of potential, resistance or current; as a standard for calibrating potentiometer; for standardizing electrical currents for electrical measuring instruments; and with thermocouples etc. Excellent performance is achieved by the use of switches throughout the measuring circuit. A main switch divides the over all potential down to 0.1 V steps and the two successive 100 way switches divide down to 0.001 V and 0.00001V; a range switch multiplies the range by 1, 0.1 and 0.01 when required to achieve better resolution of measurement. These 100 way switches were specially designed for the potentiometer so that thermal e.m.f. generated at the contacts is minimized with low contact resistance. More over the circuit is designed to eliminate current flow through the 100 way switch contacts at balance, thus removing any error which might arise through changes in contact resistance.

FEATURES:-

?    Accurate measurement of potential, current and resistance.
?    Highest quality manganin wire well-aged standards.                                
?    High stepwise resolution of 2microvolt at the last range switches setting.
?    Excellent Accuracy of ±  0.005.
?    Impeccable craftsmanship in construction, rigorous testing and simplicity of operation.
?    Hard silver plated, self-cleaning switches with minimum contact resistance errors.

SPECIFICATION:-
Range of Measurement: 0 to 1.90100 volt

Internal Resistance        100 ohms per volt
Range of Measurement            0 to 1.90100 volt  

 Measurement Accuracy

Range                     Range Switch Setting

0 µV to 1.90100 V                                     X1
0 µV to 0.190100 V                                   X 0.1
0 µV to 0.0190100 V                                 X0.01

ACCESSORIES FOR PRECISION VERNIER POTENTIOMETER

Following accessories are required with the potentiometer as support accessories to complete the measurement system. The potentiometers become the complete measurement system in conjunction with the following accessories:     
1.    Spot Reflecting Galvanometer
2.    Analogue Galvanometer with selector switch for protection of Spot Reflecting Galvanometer
3.    2 Volt Accumulator (constant voltage source)
4.    Electronic Standard Cell    
5.    Volt Ratio Box   

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