Solutions for pressure, temperature, force and level measurement, flow measurement, calibration and SF6 gas solutions from WIKA are an integral component of our customers' business processes.
This is why we consider ourselves to be not just suppliers of measurement components but rather more a competent partner that offers comprehensive solutions in close co-operation with our customers – customised and precisely designed products for the exact requirement.
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1) 25 Ω SPRT referred to a 25 Ω reference resistor
In metrology, the most important consideration is the quality of the fundamental measurement. The bridge technology from ASL represents the peak of performance in resistance thermometer measurement. It exploits the inherent advantages of AC bridge technology to maintain repeatable measurements of highest precision under practical operating conditions.
The model CTR9000 primary-standard resistance thermometry bridge is designed specifically for resistance thermometry to provide the best possible accuracy.
The 25/30 2) Hz or 75/90 2) Hz operating frequency provides fast, continuous measurement with high immunity to thermal EMF errors and supply frequency noise sources.
Practical measurements involve cables, connectors and imperfect operating environments. The CTR9000 achieves its full specification under a wide range of real operating conditions. AC bridge technology will always outperform measurements
made using DC technology with slow current reversal. These benefits are inherent to the fundamentals of electrical measurement and not just the implementation.
2) 60 Hz supply frequency
Model CER6000
Model CTP5000
Model CTR6500
Standard version
Advantages of AC resistance thermometry bridges
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