• 100 times/sec. High speed sampling
  • High display resolution to 16,000 counts
  • 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 (AFFC) for consistently accurate batching results
  • Enter control set points through front keys or remotely through external thumb wheels
  • Automatics weight and/or count accumulation
  • Sub display provides feedback on all setpoints & 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 installations & reduces space
  • Digital Span Calibration enhances technical support & difficult installations
  • Splash proof front panel and keys (IP-65)
  • High sensitivity 0.3µV/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-weigh batching

System self-Diagnostics

The most important factor in the installation of any weighing or controlling system is to assure that all cables, I/O connections and options are set up and working correctly. This can be very time consuming and difficult, adding to the expense of the installation. The AD-4401 solves this problem by providing system Self-Diagnostic that can check.

  • All installed option
  • All I/O connections (without the need for test equipment)
  • Setpoints connections
  • Control keys
  • A/D converter input value

Superior Free-Fall Control

The type of material being batched, ambient temperature, flow rate, consistency of the material, and many other factors impact the accuracy of any batching process. The AD-4401 provides two types of free fall compensation which may be selected according to batching inconsistent material, such as sand with stones; honey whose flow rate changes according to ambient temperature; and flour, which is susceptible to sticking to the sides of the discharge gate.

High performance A/D converter

New Sigma Delta A/D converter IC provides high speed, high resolution and high sensitivity in a very small package, that saves space, reduces parts and lowers cost.


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