For reliable dry solids or liquid metering... featuring exceptionally durable, non-load cell, counterbalanced weighing systems that are permanently calibrated and adjustment-free.
"Weight-Loss-Differential" Weigh Feeders from Acrison... proven to be the most accurate and versatile continuous (or batch) weigh feeding concept for totally reliable, unattended operation in scores of worldwide installations.
For Continuous or Batch Weigh Feeding Applications Highest Performance, Quality and Value.
The Model 407 is a low profile, economically priced Weigh Feeder employing Acrison's advanced “Weight-Loss-Differential” weigh feeding concepts and designs for accurately and reliably metering a wide variety of dry solid (and liquid) ingredients at feed rates ranging from approximately one pound to several thousand pounds per hour.
Encompassing strong, field-proven weighing technology, specifically developed by Acrison for “Weight-Loss” weigh feeding applications, the Model 407 utilizes a uniquely configured, open “platform” type lever weighing system where the selected metering device "mounts" onto a weigh platform.
This robustly constructed lever weighing network is in itself a “scale” utilizing frictionless stainless steel flexures for all pivotal connections. As weight is added to or removed from the weigh platform, the lever network “moves” in a direct relationship to that weight. This movement is precisely sensed by Acrison's Ratiometric Digital Weight Resolver and instantaneously converted into a highly accurate digital signal directly proportional to weight.
Unlike “weight-loss” weigh feeders that incorporate weighing systems designed with one or more load cells…well known for their temperamental behavior and calibration drift…Acrison weighing systems do not use load cells or any other type force measurement device for sensing weight.
Designed for unsurpassed precision, reliability and longevity, the Ratiometric Digital Weight Sensing System produces unamplified resolution of over one part in one million. Also, because the actual sensing element of the Ratiometric System does not physically attach to any part of the lever weighing network, it cannot be damaged by any magnitude of shock or overload that the weighing system may experience. The Ratiometric Digital Weight Sensing System is entirely adjustment-free.
Analogous to the weighing mechanisms used with all of Acrison's various model “Weight-Loss-Differential” Weigh Feeders, the Model 407 Weighing System is also permanently calibrated and will remain precise without the need for recalibration and/or adjustment. In addition, this weighing mechanism is not in any way delicate and/or temperamental and will operate over an ambient temperature range of –10 to 140 degrees Fahrenheit. Optionally, it can be furnished in all stainless steel construction.
Continuous metering accuracy typically ranges between +/- 0.25 to 1 percent or better (error) at two sigma, based on a given number of consecutive one minute weighments.
The Model 407 Weigh Feeder is available with five different Acrison dry solids metering mechanisms… the Models 101-0, BDFM, 170-00, 170-0 and 105.
Introduced in 1970 for low rate metering, Acrison's Model 403 was the first commercially successful "weight-loss" type continuous weigh feeder produced in the United States. Today, Acrison's Model 403 Weigh Feeders encompass over 50 distinct model sizes, available with 15 different type metering/hoppering mechanisms, unrivaled in their materials-handling capabilities... virtually maintenance-free devices that do not require rezeroing, calibration or adjustment. Longevity is inherent in their design with a minimum life expectancy of 20 years.
The feed rate capability for the Model 403 Weigh Feeder ranges from several pounds to approximately 70 tons per hour... based on the selected metering mechanism, hopper size, scale capacity, product bulk density, and frequency of refills.
Acrison's Model 403 "Weight-Loss-Differential" Liquid Weigh Feeders incorporate the same ruggedly designed weighing systems used with Acrison's Model 403 Dry Solids Weigh Feeders.
Refilling a supply tank is also usually completely automatic, typically performed by either an automatically operated valve, or by means of a transfer pump.
Selection of the metering pump will vary depending upon product characteristics and feed rate requirements. The pump will be of the highest quality, specifically selected to handle the specified liquid. When desired, and if feasible, Acrison can adapt an existing pump to a "Weight-Loss-Differential" Weigh Feeder.
Feeder supply tanks are available in various materials of construction, sizes and shapes to meet the requirements of a specific application.
Designed with the most advanced, durable and trouble-free weighing and control technology available, the new Acrison Models GP403-101 and GP403-130 Weigh Feeders offer users an economical and compact means to accurately and dependably meter most free-flowing granular or pelletized dry solid materials, on a "Weight-Loss-Differential" basis, at feed rates ranging from about 3 to 5,000 pounds per hour. The feeder is also designed with a bottom discharge slide gate for rapid, complete and easy cleanout.
The Model 402 and 404 Series are compact, low profile precision weigh feeders utilizing Acrison's highly advanced and widely recognized "Weight-Loss-Differential" concepts and technology to provide unparalleled overall performance in metering a wide variety of dry solid or liquid ingredients... virtually maintenance-free devices that do not require rezeroing, calibration or adjustment.
The Model 402 Series of weigh feeders are available with several different type metering mechanisms... the selection of which is determined by the physical handling characteristics of the product or products to be metered and/or the feed rate requirements. The Model 404 Series of weigh feeders are available with various auger type metering mechanisms.
Feed rate capability for the Model 402 Series of weigh feeders ranges from approximately 10 to 8000 pounds per hour, determined by the selected metering mechanism, hopper size, scale capacity, product bulk density and frequency of refills.
For the Model 404 Series of weigh feeders, feed rate capability ranges from approximately 20 to 14,000 pounds per hour, also determined by the selected metering mechanism, hopper size, scale capacity, product bulk density and frequency of refills.
The Models A405 and 406 are small and compact precision weigh feeders utilizing Acrison's highly advanced and widely recognized "Weight-Loss-Differential" concepts and technology to provide unexcelled "total performance" in metering a wide variety of dry solid or liquid ingredients... virtually maintenance-free devices that do not require rezeroing, calibration or adjustment.
Each model weigh feeder is available with several different type metering mechanisms... the selection of which is determined by the physical handling characteristics of the product or products to be metered and/or the feed rate requirements.
For the Model A405, feed rate capability ranges from approximately two pounds upwards to several thousand pounds per hour... also predicated on the selected metering mechanism, hopper size, scale capacity, product bulk density and frequency of refills.
The Model 406 Weigh Feeder has a minimum feed rate capability of about 0.10 pounds upwards to approximately 800 pounds per hour... likewise predicated on the selected metering mechanism, hopper size, scale capacity, product bulk density and frequency of refills.
Today's very demanding processes require Weigh Feeders that are highly accurate and very reliable; they cannot be temperamental, delicate and/or maintenance-intensive.
Their mechanical designs and materials-handling capabilities must be proven viable and versatile. Their control systems must be leading-edge in design, functionality and interfacing capabilities.
Acrison Weigh Feeders are the most advanced, precise and durable in the industry. They are also the most flexible, boasting an unprecedented number of superior features. Their time-proven, uncommonly rugged weighing systems are the envy of the industry. And, Acrison Weigh Feeders require exceptionally low maintenance.
When operating in a "Batching Mode," any of Acrison's various Model 400 Series of Weigh Feeders provide optimum accuracy and versatility.
Designed for small to medium size ingredient batching (dry solids or liquids), Acrison's various Model 400 Series "Weight-Loss-Differential" Weigh Feeders are available in two basic batch weighing operational arrangements to suit the exacting requirements of a given application. [When configured to operate as a batch weigh feeder, the feeder model designation is followed by a (B)].
In utilizing the "weight-loss" concept for batch weighing, the exact amount of the selected batch size (or batch weight) is discharged from the feeder; then, the feeder stops.
Most significantly, the common problem of variable product accumulation anywhere on the weighing system (internally and/or externally) affecting accuracy, typically associated with batch/dump type weighing systems, cannot occur with a "weight-loss" type Model 400(B) Batch Weigh Feeder. And assuming the weighing system of the "weight-loss" feeder is accurate and reliable, batch-weighing performance will be very precise and dependable.
Unlike load cell based weighing systems, which require periodic re-zeroing and re-calibration, and which are also delicate and temperature sensitive, Acrison's permanently calibrated, high resolution, rugged-duty, non-load cell weighing systems offer users a high comfort level. They are also adjustment and calibration-free, require near-zero maintenance, and boast exceptionally long life.
Acrison batch weighing systems may be controlled by one of Acrison's multiprocessor controllers, the selection of which is determined by user preference and/or the specifics of a given application.
Regardless of the characteristics of the dry solid ingredient(s), Acrison's wealth of expertise in this very specialized industry provides a viable solution to your batch weighing requirements.
Batch accuracy typically ranges between ± 0.1 to 0.5 percent or better (error) at two sigma, based on a given number of consecutive weighments.
Acrison's Model 403B(D) "Batch/Dump" Weighing Systems also utilize Acrison's non-load cell, counterbalanced, high resolution weighing mechanism.
With the various batch/dump arrangements, the total weight or amount of product in a given batch must be encompassed within the weigh hopper (or tank). Therefore, the weigh hopper (or weigh tank for liquids) must be designed sufficient in size to hold the entire amount of the largest desired total batch. Upon the initiation of each batch, the controller automatically rezeroes the scale to ensure optimum performance.
Acrison's various Model 403B(D) Batch Weighing Systems may be controlled by one of Acrison's multiprocessor controllers, the selection of which is predicated on user preference and/or the specifics of a given application.
Batch accuracy typically ranges between ± 0.1 to 0.5 percent or better (error) at two sigma, based on a given number of consecutive weighments.
For precision batch weighing out of bulk bags.
The Model 404BZ(BU) is a precision batch weighing system consisting of an Acrison rugged-duty, ultra-high resolution, non-load cell, counterbalanced "platform" type weighing mechanism upon which an Acrison Dry Solids Feeder and a Metalfab Bulk Bag Unloader are mounted... uniquely configured and designed to precisely weigh the discharge of product, on a batch basis, by a highly advanced multiprocessor control system.
In operation, product discharges out of the bulk bag unloader and into the feeder beneath. Upon command, and in precise relation to a batch-weight selection, the feeder meters product until the desired batch weight has been reached, and then stops. The Model 404BZ(BU) Bulk Bag Unloader Batch Weigher is not designed for continuous operation; it has been specifically designed for batch weighing.
Acrison Model 404BZ(BU) Batch Weighing Systems may be controlled by one of several Acrison multiprocessor controllers, the selection of which is determined by user preference and/or the specifics of a given application.
Batch accuracy typically ranges between ± 0.2 to 0.5 percent or better (error) at two sigma, based on a given number of consecutive weighments.
For additional information or answers to your questions, please contact us at our office nearest you.