Digital Control Techniques Applied to Automatic Weighing Processes

The weighing industry is perhaps more cognizant of accuracy than any other instrumentation industry. Basic scale accuracies of 1/10 of 1 per cent are, generally speaking, minimum, with over-all system accuracies in this vicinity desirable. The two digital devices described in this paper are unique in that they are an integral part of the weighing instrument and as a result, the accuracy of conversion from weight indication to a digital signal is absolute (no error encountered). Therefore, the system accuracy is virtually the some as the basic instrument accuracy.