Higher accuracy in resistance decade boxes
A
Cropico product story
Edited by the Engineeringtalk editorial team
May 19, 2000
New high-performance capability of Cropico models 005-B and 006-A resistance decade boxes combines an accuracy of 0.01 % with long-term stability of +/-20ppm per year.
Resistance decade boxes have higher accuracy and stability.
New high-performance capability of Cropico models 005-B and 006-A resistance decade boxes combines an accuracy of 0.01 % with long-term stability of +/-20ppm per year, for precise resistance thermometer simulation.
Also featuring low temperature co-efficient of +/-3ppm/C to +85C plus negligible thermal emfs and essentially non-measurable noise, these compact and lightweight boxes are aluminium with welded corners, sealed to prevent ingress of contaminants.
Suitable for Pt100 simulation and proof tested at 1 kV, the two models offer 5 or 6 decades with total resistance of 1,112.10 or 1,112.11 ohms and resolution of 0.01 or 0.001 ohm and 0.025 or 0.0025øC respectively.
They have gold-plated brass switch contacts and solid copper gold-plated terminals accepting spade tags and 4mm banana plugs.
An exclusive `air cushion' winding technique provides virtually stressless elements for improved performance.".
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