Resistance Calibration Standards are required critically in a variety of electrical and electronic
calibration needs viz. the calibration of RTD sensors, thermocouples, electrical meters,
transformers conductors, calbraion of Meggers and Insulation Testers etc.
Reliability: Vaiseshika Resistance Calibration Standards have been constructed from Manganin
alloy (composition: Copper 86 %, Manganese 12 % and Nickel 2%). Manganin alloy is characterized
by a low temperature co-efficient of the order of +/- 1 ppm (between 20 Deg. C to 50 Deg. C), which means the
value of resistance remains unaffected by variations in temperature. Every resistance coil is
subjected to accelerated ageing and temperature cycling for obtaining precision resistance.
These features, coupled together, provide excellent reliability to Resistance Standards.
Accuracy: Resistance Standards are available with accuracy of the order of +/- 0.01%. Accuracies
vary from application to application (please refer detailed specifications).
Repeatability: Vaiseshika Resistance Calibration Units are standardized against Master Calibration
Standards with accuracies better than 0.005%. Stabaumatic Potentiometers and Standard Cells
from H.Tinsley and Co. Ltd., Croyodon, U.K. and John Fluke Manufacturing Co., USA, 6 1/2 Digits Digital Multimeter from John Fluke Manufacturing Co., USA and 8 1/2 Digits Digital Multimeter from Agilent Technologies, United States, are maintained
at Vaiseshika Facilities which, in turn, are maintaining complete traceability to the National Physical
Laboratory, New Delhi (India).
Traceability : Vaiseshika Resistance Standads are now available with NABL, New Delhi (National Accreditation Board for Testing and Calibration Laboratories)
traceability calibration certificates
Vaiseshika Electron Devices, Ambala Cantt. has received accreditation for its newly built Metrology Laboratory from the National Accreditation Board for Testing and Calibration Laboratories (NABL), Department of Science and Technology, Government of India, New Delhi. The NABL accreditation for Vaiseshika Metrology Laboratory means that the measurement capabilities and calibration standards at Vaiseshika are compliant to ISO/IEC 17025:2005 standards.
