Powerful vibration-cancelling filter (High Performance Digital Filter)
 100 times/sec. High speed sampling
 Up to 1 million counts of A/D resolution 
 Monitor & control weighing and batching with external or internal resolution 
 Fuzzy and Automatic Free Fall Compensation for consistently accurate batching results 
 Enter control set points through front keys or remotely though external thumb wheels 
 Automatic weight and/or count accumulation 
 Sub display provides feedback on all set points & simplifies calibration 
 Supplementary flow function assures accurate performance on each batch 
 A host of communications capabilities 
 RS-232C, RS-422/485, BCD, analog output and standard 4-20mA Current Loop 
 Connect up to 10 AD-4401’s with A&D’s RS-422/485 
 Compact DIN size housing speeds installation & reduces space 
 Digital Span Calibration enhances technical support and difficult installations 
 Splash proof front panel and keys (IP-65) 
 High sensitivity 0.3(µV/d for more accurate measurements 
 Automatic batching and customer programming capability 
 Bright, clear fluorescent displays 
 Hold and peak hold functions 
 User programmed timer settings and alarms 
 Improve operational safety & performance 
 Weigh-in and Loss-in-Weight batching 

AD4401A-01 Parallel BCD output (open collector) 
AD4401A-03 RS-422 / 485 input / output 
AD4401A-04 RS-232C input / output 
AD4401-06 Setpoint unit    Points of difference between AD4401-05 and AD4401-06 (PDF 94KB)
AD4401A-07 Analog output (4-20mA) 
AD4401-10 Stainless steel side panel