High Performance Weighing / Batching Indicator
For batching, loss-in-weight, check weighing or simple static weighing. High Speed, High Accuracy, Fail Safe Operation
The AD-4401 Indicator is highly recommended for batching, loss-in-weight, check weighing, or simple static weighing. It provides System Self-Diagnostics, Superior Free-Fall Control and 8 modes of Weighing and Batching Programs
100 times per second high speed sampling
High display resolution to 16000 counts
Up to 1 million counts of A/D resolution
Monitor and control weighing and batching with external or internal resolution
Fuzzy and Automatic Free Fall Compensation (AFFC) for consistently accurate batching results
Enter control setpoints through front keys or remotely through external thumbwheels
Automatic weight and/or count accumulation
Sub display provides feedback on all setpoints and 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 20mA Current Loop
Connect up to 10 AD-4401's with AND's RS-422/485
Compact DIN size housing speeds installation and reduces space
Digital Span Calibration enhances technical support and difficult installations
Splash proof front panel and keys (IP-65)
High sensitivity to 0.3µ V/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 and performance
Weigh-In and Loss-In-Weight 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 weighing indicator solves this problem by providing System Self Diagnostics that can check:
All installed options
All I/O connections (without the need for test equipment)
Setpoint connections
Control Keys
A/D converter input value
Superior Free-Full 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 weighing indicator provides two types of free fall compensation which may be selected according to batching contitions: Fuzzy Free Fall Compensation is particularly effective in 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.
Customer Programmable Control I/O Pins and "F" Function Key
Each batching installation has different I/O requirements. The AD-4401 adapts to these requirements by allowing the programming of each of its Control I/O pins. The user may assign up to 6 input functions from a selection of 14, including: Zero, Tare Batch Start, Emergency Stop, Discharge Start, Clear Tare, Accumulation, Hold and others. Up to 8 output functions from a selection of 16 may also be selected, including: Zero Band, Under & Over Limits, Full-Medium-Dribble Flow, Discharge Gate Open, Batch Finish and others. Additionally, the programmable "F" function key on the front key pad of the AD-4401 may be programmed for each special operation, including: Manual Print, Hold, Batch Start, Emergency Stop, Clear to Zero, Clear Tare or Clear Total. (The US version may be programmed for lb/kg conversion)
Eight Modes of Weighing Batching Programs are Available for:
Weigh-In Batching
Loss-in-Weight Batching
Check Weighing
Rear Panel View
Standard Serial Output: 20mA current loop output to AND's peripheral device
Setpoint: Changes settings of each comparison value using a thumbwheel or AD4401-05 setpoint unit
User defined control I/O pins:
Select 6 of 14 control input commands
Select 8 of 16 control input commands
Specifications
Analog Input and A/D Conversion
Load cell excitation
10 VDC ±5% 230mA, Remote Sensing (up to 8 load cells at 350/load cell)
ZERO Adjustment Range
0.3mV-+20mV
Input Sensitivity
0.3µ V/D (min)
Input Signal Range
-1mV ~ +15mV
Load Cell Drive Capacity
up to 8 units of load cells at 350 ohms/load cell (max 120mA)
Zero Temperature coefficient
0.02µ V + 8ppm ofdead load)/°C TYP
Span Temperature coefficient
±8ppm/°C reading (typ)
Non-Linearity
0.01% of full scale
Input noise
±0.3µ Vp-p
Input Impedance
10M ohms minimum
Maximum Input noise
less than 0.4 µ Vp-p
A/D Conversion Method
Sigma Delta
A/D Resolution
1,000,000 counts (maximum)
Maximum Displayed Resolution
20,000 counts (maximum)
A/D Conversion Rate
approximately 100 times/second
Digital Section
Main Display
7 digit, 7 segment blue fluorescent display, 13mm character height, displays weight
Sub Display
8 digit, 7 segment blue fluorescent display, 7mm character height, displays Tare, Final weight, Accumulated weight, Count of measurements
Display Resolution
16000D
Minimum Division
Times 1, x2, x5, x10, x20, x50
Under ZERO indication
"-" minus sign
Annunciator Keys
Setpoint, Zero, Tare, Net/Gross, Enter, OPR/STB, F, CAL
Programmable "F" Keys
Select One: Emergency Stop, Clear to zero, Clear tare, Clear total, Manual print, Hold, Loading start or No capability
