Avery Weigh-Tronix Model 7800 Family Weight Classifiers

User Instructions
Avery Weigh-Tronix is a trademark of the Illinois Tool Works group of companies whose ultimate parent company is
Illinois Tool Works Inc (“Illinois Tool Works”). Copyright © 2017 Illinois Tool Works. All rights reserved.
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Description
The NCI 7800 models are digital electronic parcel bench scales specifically designed
for shipping applications and are Legal-for-Trade. The scales have built-in intelligence
that enables them to be easily interfaced with a computer or other data-processing
device.

Capacity/Resolution

Model Capacity (lb) n(max)
7820-50
7820-70
7820-75
100 x 0.02 lb
150 x 0.05 lb
150 x 0.02 lb
5000d
3000d
7500d
7880-50
7880-75
7880-125
7880-150
100 X 0.02 lb
150 x 0.05 lb
250 x 0.05 lb
300 x 0.1 lb
5000d
3750d
5000d
3000d
7885-75 150 x 0.05 lb 3750d
7829-125 250 x 0.05 lb 5000d
7840-125
7840-150
250 x 0.05 lb
300 x 0.1 lb
5000d
3000d
7824-125
7824-150
250 x 0.05 lb
300 x 0.1 lb
5000d
3000d

Model 7820
United States: NTEP #95-070
Canada: Ministry of Industry #AM-5076
For use as a Class III device from +5°C through +40°C
Model 7885
United States: NTEP #02-069
Canada: Ministry of Industry (#AM-5507)
For use as a Class III device from +5°C through +40°C
Models 7824, 7829, 7840, 7880
United States: NTEP #95-121
Canada: Ministry of Industry #AM-5099
For use as a Class III device from +5°C through +40°C

Dimensions
Model 7820: 14" L x 12.5" W x 4.1" H
Model 7880: 18" L x 18" W x 4.6" H
Model 7885: 18" L x 18" W x 3.0" H
Model 7829: 20" L x 20" W x 5.3" H
Model 7840: 18" L x 24" W x 4.6" H
Model 7824: 24" L x 24" W x 4.6" H

Power Supply
UL/CSA approved in-line power supply with 6’ line cord. (7885 uses wallmount style)
Input:120 VAC +10%-15%, Standard 3 wire w/ground
Output:15 VDC @.3 Amps DC

Frequency
60 Hz Standard
Power Requirements
0.1 amp maximum
Operating Temperature
42ºF – 104ºF (5ºC – 40ºC)
10% to 95% RH (non-condensing)
Construction
Model 7820: Die cast aluminum base with a stainless steel weigh platter.
Overload protection: Adjustable center stop, fixed corner stops.
Model 7885: Painted mild steel base with stainless steel weigh platter.
Overload protection: Fixed center and corner stops.
Models 7824, 7829, 7840, 7880: Painted mild steel base with stainless steel weigh
platter. Overload protection: Adjustable center and corner stops.

Display
½" high, six-digit LCD. Internal display standard on all models except 7885 (remote
only)
Key panel with ZERO and TEST keys.
Optional remote display with 7 ft. cable.
Scale Leveling
Level bubble located under weigh platter. Adjustable feet in each corner to level the
scale.

Zero Window
Initial automatic zero setting is ±10% of maximum capacity—active at power up.
Manual zero setting range is ±2% of maximum capacity—active using the ZERO key.
Under Capacity Limits
Under capacity indication will be given with dashes appearing on the bottom line of the
display whenever the display is more than 2 percent below the initial zero value.
Over Capacity Limits
Over capacity indication will be given with dashes appearing in the upper line of the
display whenever the weighed item exceeds 9 divisions over the rated capacity of the
unit. The scale will use the Initial zero value for reference for over capacity
determination.
Sealing
Access to the calibration switch can be secured with a lead wire or pressure sensitive
security seal. The remote and primary indicators have no metrological features that
require the use of a security seal.
Internal Counts
The scale has 100,000 internal counts.
Dynamic Response
The time from when weight is applied to the scale until a stable weight display is
displayed:
0–1000d 1.5 seconds
1000d+ 2.0 seconds
maximum mean average

Communications
Factory default settings: 9600 baud, 7 data bits, even parity, 1 stop bit.
Standard 9-pin pass through RS232 interface cable included. Not a null modem.
RS232 bidirectional, configurable 1200 to 19.2K baud. Transmits weight and scale
status whenever ASCII “W” <CR> is sent by a remote device.
USB VCP
USB HID
Only one of these three interface devises (RS232, USB VCP or USB HID) can be used
from the scale at a time.

Spare parts
DESCRIPTION PART NUMBER
7820 Keyboard Panel AWT25-501979
7824, 7829, 7840, 7880 Keyboard Panel AWT25-501978
Display PCB 7405-15465
PCB ASSY Main RS232 USB Option AWT25-501295
PCB ASSY, 78XX 2X USB Option AWT25-501976
Power Supply - in-line 1148-15536
Power Supply - wallmount (7885 only) 1148-15535
RS232 Cable 1140-13842
7820-50 Loadcell 7154-16335-50
7820-70 Loadcell 7154-16333-100
7820-75 Loadcell 7154-16335-100
7880-50 Loadcell 7154-16365-75
7880-75 Loadcell 7154-16365-100
7885-75 Loadcell 7154-16335-100
7880-125, 150 Loadcell 7154-16365-150
7829-125 Loadcell 7154-16365-150
7840-125, 150 Loadcell 7154-16365-150
7824-125, 150 Loadcell 7154-16365-150
Kit, Remote Display, 6 digit, 7’ cable AWT05-508631
Kit, Remote Display, 6 digit, 1’ post AWT05-508632
7820 Feet 7075-15475-02
7880, 29, 40, 24, 85 Feet 7075-13082