Weighing Indicator/Controller for Loss in Weight (ADW-LW)

Weighing Indicator/Controller for Loss in Weight (ADW-LW)
  • For fast and accurate weight filling control
  • Tests for sufficient hopper contents prior to initiating the fill
  • Hopper replenishment and taring performed automatically
  • System speed optimisation (self-learning)
  • In-flight compensation
  • 'Weight complete' output and totaliser functionality
  • Stand alone system or additional control with PLC

The ADW-LW (Weighing Indicator / Controller) uses the loss-in-weight method for filling containers such as bags, drums, etc.  It's inbuilt control capability allows stand-alone operation without the need for a PC or PLC.

Functional description
On pressing the start contact the hopper contents level is checked to confirm that sufficient material is available to fulfil the Set Point value.

If this is correct, an Auto Tare occurs and the feed valve opens (relay 1) until Set Point is reached (SP-IF).
If on receiving a start input, the hopper level is less than the hopper low level (HLL) the feeding valve will be opened by relay 2, until the hopper high level (HHL) is reached. On reaching the high level a timer is started for a period set in 'Tl', after this period the discharge is started.

If a further start signal is received and product is now available, the result of more product in the hopper, then discharge can be initiated. The analogue output value is taken from the hopper gross value.

An optional printer will print the Set Point value of the target and actual achieved value, together with the bag number. With appropriate printers a time and date stamp can be given.


Calibration Automatic digital by use of keypad and 1 (or 2) known weights. Manual calibration can also be selected
Auto Tare By pressing keys '>' and then 'R' display will zero. Auto tare value can also be viewed and manually changed if required. Auto tare value is retained on powerdown.
Sensitivity Preset via DIL switches between 0.5 to 200mV/V
Excitation 10V DC nominal, 150mA maximum
Compensation By ± sense wires to compensate for cable, connection volt drops and any variation in 10V supply
Accuracy 90 days ± 0.08% of reading ± 0.05% of FS typical
Drift 0.002%ºC typical @ 2.5mV/V
DC Analogue Outputs
DC Voltage 0 to 5V, 0 to 10V, -10 to +10V, Max Current out 50mA
DC Current 0 to 1mA, 0 to 20mA, 4 to 20mA, Max Voltage out 20mA
Accuracy typical ± 0.08% of output, ± 0.08%FSD
Resolution as display resolution, max 15 bits
Calibration by 15-turn pre sets for gain and offset
Inversion By keypad value
Isolation ±130V RMS or DC max to analogue input or to any other port
Ranging Fully keypad scalable over desired display range
PID Power level, when selected = 12 bit resolution output
Communication Port CP Operation
All display data can be accessed via the communications port along with relay, PID power and EEPROM status.
All user configurable data can be changed including EEPROM enable/disable and relay reset (address code cannot be changed).
RS485/422 For up to 32 instruments on 1 bus, 4 wire
RS232 For printer or direct connection to 1 device, 3 wire
Cable Length 1km (depending on baud rate)
Baud Rates 300, 600, 1200, 2400, 4800, 9600 (19200 MANTRABUS only)
Electrical Isolation ±130V RMS or DC max to analogue input or any other port
Formats MANTRABUS and printer output formats
Power Supplies
220V-230V AC 50-60Hz 10W, 110V-120V AC 50-60Hz 10W, 9-32V DC 10W isolated
Base ADW15
Displays 7 segment LED 4.5 digit 10mm.3 x 3mm LED's 2 for relay status, 1 for program and hold indication.
4 membrane panel keys with tactile feedback. 1 scroll key to view/update parameter. 1 digit select key. 1 digit increment key. 1 reset key. Keypad disable by internal links behind front panel. Hold function by digit select key when in input mode.
Data Retention/Protection
Retention 10 years for set up values, minimum of 100,000 write cycles
Protection of Data and Function(s) Watchdog timer giving repeat auto resets. Impending power detection and hold off. Keypad security and time out
Storage Temperature -20 to +70ºC
Operating Temperature -10 to 50ºC
Relative Humidity

95% maximum non condensing

CE Environmental Approvals European EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC



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Weight fill controller tests for sufficient hopper contents prior to initiating the fill


No relevant software available

Product order options

Please read the following before selecting the options for this product:

ADW-LW Base Unit - Standard Input (100mS). Digital Weighing Indicator/Controller comprising 4.5 digit LED display, Microprocessor module with Auto-Calibration, Auto-zero, Excitation output of 10V @ 150mA, Password Protected, Dual Set Point Relays.

Starting with the base model ADW-LW, select the options that you need to configure the device to meet your needs.

Base Unit Code
Outputs Code
Analogue Output 0-10V V4
*Limited stocks* Analogue Output 0-1mA A1
Analogue Output 4-20mA A3
Comms Code
RS485/232 Communications for MODBUS RTU, ASCII MANTRABUS COM 1
Power Supplies Code
110V, AC 50/60 HZ 110
230V, AC 50/60HZ 240
Supply 12/24V DC 12/24
Mounting Code
Panel Mount P
DIN Rail D
Accessories Code
Batch Weighing Controller, 12 Ingredients or Components

Batch Weighing Controller, 12 Ingredients or Components

Weighing Indicator | Controller for Fast Fill Operations

Weighing Indicator | Controller for Fast Fill Operations

Weighing Indicator Controller with up to 16 Set Points

Weighing Indicator Controller with up to 16 Set Points

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