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Our commitment is to provide measurement systems that meet specification in the intended environment, day in and day out. A key component of this requirement is the UAI patented double reference bar technology. Components of any system can change over time, affecting accuracy and performance. The double reference bar provides a "gold standard", to remove any changes that occur in the UAI gaging system. Shown to the right in Figure 1 and Figure 2, are different views of a UAI double reference bar transducer.
Two external reference targets are precisely mounted at known distances, from the sound transmitting/receiving surface. Exact measurements of distance is measured to these fixed locations during the same period as thickness/distance measurements are taken to the target surface. If any factor (temperature, humidity, air pressure, electronic component drift, etc.) causes the sound waves to measure the target incorrectly, the reference bar compensation will correct the error. There is no lag or time delay and there is no aging or drift of the system. A warm up period is not required.
