4693 Heavy-Duty Checkweigher

4693-Heavy-Duty-Checkweigher-&-Controller-250The 4693 Heavy-Duty Checkweigher is designed for large and heavy products of virtually any shape or size. Items compatible with this in-motion checkweigher include anything from pails and drums, to boxes and cartons, to bagged product conveyed up on end. This checkweigher is extremely accurate and dependable, yet is specifically intended for harsh, abusive, dirty environments commonly found in the cement, concrete, soil, bark, and carbon black products industries. Users in the chemical, starch, flour, and salt industries also rely on the 4693 Heavy-Duty Checkweigher for their quality control by weight. It offers the solution to your most demanding checkweighing needs.

This robust in-line scale weighs items from 1 lb to 500 lbs, runs at speeds up to 220 feet per minute, and production rates in excess of 50 units per minute are handled with ease. The checkweigher uses a single “S-Type” load cell in an extremely accurate flexure scale base residing below the conveyor. Weigh station conveyors range from 28″ long up to 5′ long. Conveyor components include standard off-the-shelf bearings, idler rolls, and drive components, which are available through your local distributors or directly from our factory. Conveyor belts are laced and include a V-guide for positive tracking.

The checkweigher utilizes our Model 4693 Controller to provide quick and easy access to the full functionality of this in-line scale. It offers 75 unique product setups, fully digital calibration, and user prompts on-screen, making the 4693 Controller one of the simplest to use. Standard features include prompts for product name, lot number, and 5 weigh zones (low reject, low pass, good, high pass, and high reject). Each controller also offers English and Spanish menus in full sentences for better comprehension.

Weigh station conveyors, pacing conveyors, reject conveyors, and accumulation systems are available in many different configurations, depending on the specific needs of each application. The 4693 Checkweigher is designed to withstand a wide variety of conditions without sacrificing the essential accuracy and repeatability demanded by today’s processing and packaging industry.

The optional Statistical Process Reporting (STPR) package prints unit weights and reports on standard size paper for analysis. Also available is our StatPak-PC software package that collects and saves data to a database and is able to print out reports to a customer’s requirements

Options and Accessories

Thompson Scale offers a wide variety of options and accessories to complement the Sonic 350 Checkweigher:

Hydraulic Lift Checkweigher

The 4693 Hydraulic Lift Checkweigher is ideal for production facilities that produce heavy or bulky items and use conveyor systems that change heights, specifically open-mouth net weigh fillers.

Heavy-Duty Reject Checkweigher

4693-R-Heavy-Duty-Checkweigher-300The 4693-R Heavy-Duty Reject Checkweigher is designed for production lines that need to quickly reject heavy packages off the line, but don’t have the additional space for an extra reject station.

Entry-level Checkweigher

Thompson Scale also offers a low cost entry-level version of this checkweigher. It provides the most basic features at a more affordable price.

Stainless Steel 4693-R Checkweigher-Rejector

Empty Bag Detect

Most bagging applications suffer from the common problem of occasionally discharging empty bags from the packaging machinery. Since these empty bags typically weigh only a few ounces, most heavy-duty checkweighers will not detect the bag crossing the scale.

The 4693 Heavy-Duty Checkweigher offers a unique option to detect empty bags. A photo-eye is mounted below the outfeed end of the weigh station conveyor to detect empty bags when they occur. If there is no weighment output for a bag (neither good nor bad), then the bag is considered empty and rejected from the system. It is extremely important to remove these bags before they enter automatic palletizing systems since they will most likely jam the machinery.

Early Weight Terminate

The standard Thompson checkweigher requires the head of the package to exit the weigh station conveyor before the current weighment cycle is terminated. In cases where this is not acceptable, a photo-eye input is available to terminate the weight cycle early. The photo-eye is placed about 3″ from the exit of the weigh station and allows the checkweigher controller to classify the package before it begins to leave the weigh station.

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Additional Information

Quotation Questionnaire:

Complete our on-line questionnaire to receive a detailed proposal for your application. If you choose to fill out this form, Thompson Scale will provide a detailed proposal for equipment to meet your specific requirements. Be sure to include your name, company name, telephone number, and fax number so we can get in touch with you if additional information is needed.


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