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Toll Free: 1 866-473-6900
Outside of US: (973)473-6900
Fax: (973)777-8302
Scientific Industries
80 Orville Dr.
Bohemia, NY 11716
Email: sales@torbal.com

Hours of Operation:
M-F 9:00 AM - 5:00 PM EST

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SKU: 16149
UPC: 728028234152
Weight: 16.00 lbs

Market Price: $1386.57
Our price: $929.00

Availability: In stock

GSA certification


General Services Administration (GSA) Contract Holder

This Torbal Scale or item is available for purchase by Federal Government institutions under GSA contract terms and conditions. For more information or to obtain a GSA quote please contact our sales representatives. 1-866-473-6900

Contract Period: 9/1/07 through 8/31/17
Contract #: GS-07F-0552T
Contractor: FULCRUM INC
Address: 100 DELAWANNA AVE, SUITE 502
CLIFTON, NJ 07014-1420
Phone: (973)473-6900
Web Address: http://www.torbalscales.com
GSA Advantage Catalog:  

Quick Overview

520g x 0.001g Best Laboratory Scale in the AD series. Ideal for professional and demanding applications. With 520g capacity and 1mg resolution the scale offers outstanding value and performance. Die-cast metal housing, electromagnetic load-cell, 7 weighing functions, all essential units of measure, and an RS232 and USB interface.


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Recommend upgrade

Upgrade to the AGC500 for an added only $370.00

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Always stay accurate and keep your scale calibrated by upgrading to automatic internal calibration and are newly designed electromagnetic load cell.

Features and functions

Large LCD Display
The AD Series scales are equipped with a large 7-segment LCD display which ensures excellent visibility of weighing results. The display features many indicators which make the scale intuitive and easy-to-use.

large lcd display

RS232 Interface Port
A programmable RS232 communication port is standard on all scales. The port allows transferring data to a printer or a PC. Under the control of Torbal™ Communication Software, data may be exported to standard word processing and spreadsheet programs.

rs232 rs232

Accurate and easy to use leveling system
The die-cast metal base uses a tripod support system which consists of two adjustable legs and one fixed leg. Combined with an accurate bubble level indicator, the system ensures fast, accurate, and easy leveling.

leveling system leveling system

Robust die-cast metal housing
The Torbal AD scale has a robust die cast metal housing making it ideal for applications in tough environments. This rugged design provides a stable weighing platform and guarantees long operating life of the scale.

Robust die-cast metal housing Robust die-cast metal housing

Used Capacity indicator
All scales are equipped with a used-capacity-indicator which shows the amount of the scale's capacity used during weighing. It allows the user to avoid exceeding the maximum capacity of the scale. The indicator is particularly useful in functions such as "Totalizing" where large amounts of tares are likely to be taken.

used capacity indicator

Sealed front panel
All Torbal digital scales have a sealed front panel which protects the keys and the LCD display from dust and accidental spills. With logically grouped keys, the panel is simple, concise and intuitive..

sealed front panel

Draft ring
The draft ring is standard on all AD models with a resolution of 0.001g (AD50, AD100, AD200, AD300, AD500). Its unique design around the pan minimizes the need for a windscreen in environments with common air movements. The draft ring provides full access to the pan while maintaining stability during weighing.

Note: When using the scale in drafty environments use a Windscreen Cover Part No. AD9120

draft ring

GLP and Data Printing
This feature allows the user to print a record of a performed transaction. The printed record indicates GLP data which including the Model Number, Unit ID, User ID and a Project Number. In addition to the weighing result the receipt also contains information associated with the function in use such as, average weight time, average piece weights, reference weights, and weight limits.

GLP and Data Printing GLP and Data Printing GLP and Data Printing GLP and Data Printing GLP and Data Printing GLP and Data Printing GLP and Data Printing GLP and Data Printing
View FileAD Series Instruction Manual    Size: (3.59 MB)
View FileAD Quick Reference Guides    Size: (1.03 MB)


weighing icon

The scale's basic weighing function is fast, accurate and easy to use. Basic weighing operates with nine weighing units, and the function is equipped with all essential features such as the Initial Zero as well as the Automatic Zero Setting Mechanisms. The NET indicator lets the user identify that a Tare has been taken while the capacity indicator assist the user in performing weighing operations. Printed weighing results include GLP data as well as the date and time.

Weighing Weighing
parts couting icon

Parts Counting
The AD Series Parts Counting Mode provides the user with an easy to use, yet comprehensive, capability for counting parts based upon weight. The counting feature is designed in the form of a short wizard which leads the user step by step through the procedure. Repetitive counting using the same average piece weight is especially simple and fast. The user is offered a choice of sample sizes ranging from 1 to 100 when establishing a new average piece weight. The feature is very user-friendly with the counting process usually taking only a few seconds to complete.

parts counting parts counting
animal weighing

Animal Weighing
The AD Series Animal Weighing Mode provides the user with a fast, flexible, and easy to use capability for weighing live animals or other dynamic loads. A choice of 3 different operating modes and 4 different weight integration periods ensures the user the best results in the least amount of time per measurement. Repetitive weighing is simple and fast, especially in the Automatic Mode where animal weighing is initialized automatically and the scale performs an auto-tare as well as clears the result automatically between each weighing.

animal weighing animal weighing animal weighing
check weighing

Check Weighing
The AD Series Check Weighing Mode provides the user an easily programmed, fast, and flexible way to check-weigh items. The user has the option of using previously stored Upper and Lower limits or setting a new limit range. Repetitive Check Weighing using the same Limits requires no intervention, simply place the unknown on the pan and read the displayed result which is expressed ad UNDER, OVER and ACCEPT.

check weighing check weighing
display hold

Display Hold
This function is ideal for user's looking to lock weighing results on the display after weighing. The result remains locked on the display until it is cleared or removed from the pan. This function works in three operating modes "AUOTMATIC, SEMI-AUTOMATIC, AND MANUAL" which provide the user with great flexibility in using the function.

display hold
percent weighing

Percent Weighing
The AD Series Percent Weighing Application provides the user an easy to use, flexible, and fast way to establish the relative weight of an unknown compared to that of a stored sample and expressed as a percentage. The user may opt for a stored sample weight or, with on screen guidance, establish a new sample weight. Repetitive Percent Weighing using the same Sample Weight requires no further intervention, simply place the unknown weight on the pan and its weight expressed as a percent of the Sample weight appears on the display.

percent weighing percent weighing percent weighing

The AD Series Totalizing Mode provides the user with a simply to use, fast and easy way to perform functions which require the summation of sequential weights, like compounding. The user may view a running sub-total at any point in the process, as well as, the grand total at the end of the weighing sequence. The weighing sequence is very rapid in the Automatic Mode as weighing results are automatically added to the grand total.

totalizing totalizing totalizing


  • Grams
  • Kilograms
  • Carats
  • Pounds
  • Newton
  • Grains
  • Ounces
  • Ounces Troy
  • Pennyweight

Service and support

  • 3 Year Warranty
  • Unlimited Support
  • Free Shipping


Maximum Capacity 520g
Readability (d) 0.001g
Repeatability (Standard Deviation) 0.001g
Linearity +/- 0.002g
Stabilization time (typical) Approx. 3s
Tare Range -520g
Accuracy Class II
Pan Dimension 120 mm (4.7 in)
Scale Dimensions 239 x 273 x 91 mm (9.4 x 10.7 x 3.6 in)
Operating Temperature +15C to +30C
USB Port B Type
RS232 Port Bidirectional
Warranty 36 months