Product category:
Test Accessories
News Release from: Cropico | Subject: Resistance decade boxes
Edited by the Electronicstalk Editorial
Team on 15 August 2007
Decade boxes set resistance standards
Range includes five-, six- and eight-decade boxes designed to provide highly accurate and variable standard values of resistance and current for calibration, comparison and test applications.
Precision measurement specialist Cropico supplies a versatile range of resistance decade boxes The company's range includes a series of five-, six- and eight-decade boxes which have been designed to provide highly accurate and variable standard values of resistance and current for calibration, comparison and test applications in the electronic design laboratory or workshop
This article was originally published on Electronicstalk on 23 Jan 2008 at 8.00am (UK)
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The DO5000 has programmable current settings in 100 steps from 10uA to 10A and measures from 3mohm to 30kohm with a resolution of 0.1uohm and +/-0.03% accuracy.
With a resistance range from 0.001ohm to 11Mohm and an accuracy of 0.01% across the eight model series, the Cropico decade boxes are incorporated in a ruggedised lightweight metal case.
Gold plated brass contacts on the switches ensure low contact resistance and negligible thermal EMF.
The resistor windings comprise an exclusive air cushioned technique that provides virtually stress free elements for improved performance.
The elements are noninductively wound and the direction of each winding is reversed at the half turn points.
Long term stability makes the units ideal for precise resistance thermometer and insulation simulation.
Some models in the 005/6/8 range use the Waidner Wolf technique to ensure high accuracy measurements of low values and with resolution as low as 0.001ohm the Cropico decade resistance boxes are particularly suited to Pt100 simulation. Request a free brochure from Cropico ...
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