Weigh Right

Right Stuff Equipment (RSE) represents Weigh Right linear scale filling equipment exclusively in the Colorado and Wyoming territory. RSE sells, installs and services the full line of linear scales that Weigh Right produces.

Being local to you means we can deliver savings on the set up and provide quick response-time for service. We also stock parts for the Weigh Right product line for customers in our territory.

Call us at 303-327-4704 or email at sales@rightstuffequipment.com to get more information.

Linear scales typically operate off the principal of moving product via vibratory feed into a hopper that is attached to a load cell. Once the load cell reaches its target weight, the feeder stops adding product to the hopper. The hopper then opens and deposits the proper weight of product into the final container such as a pouch, tub, jar or box. These machines are employed by many industries that need to efficiently measure and package their products. Linear scales work best on products that flow freely. Also referred to as free flow products. Coffee, rice, granola, oats, flakes, some dry chemicals are examples.

Load cells are the key components used in modern electronic weighing systems. They work by converting force or weight into an electrical signal, which is then measured and displayed as a weight reading. Here’s how they work:

1. Strain Gauges: At the heart of most load cells is a strain gauge—a small sensor that measures the deformation (strain) of the load cell when a force is applied. Strain gauges are usually made from a thin metallic foil or wire that changes its electrical resistance when stretched or compressed.
2. Mechanical Deformation: When weight (or force) is applied to the load cell, the material it’s made of deforms slightly under the pressure. The strain gauge is attached to this material, so as the load cell deforms, the strain gauge also stretches or compresses.
3. Change in Electrical Resistance: The deformation of the strain gauge alters its electrical resistance. The more the strain (deformation), the greater the change in resistance. This change is very small, but it’s measurable.
4. Wheatstone Bridge: To measure the small changes in resistance, load cells typically use a Wheatstone bridge circuit. This is a setup of four resistors (including the strain gauges) that balances the circuit. When the load cell deforms, the resistance in the strain gauges changes, which unbalances the Wheatstone bridge and creates a measurable electrical signal.
5. Signal Amplification: The change in resistance produces a very small voltage signal that is proportional to the amount of force (or weight) applied. This signal is then sent to an amplifier that boosts it to a level that can be processed by a digital converter.
6. Digital Conversion and Display: The amplified electrical signal is converted into a digital number, which can then be displayed as a weight reading on a digital scale or system.

In short, a load cell works by measuring the small deformation of a material under weight, converting that into a change in electrical resistance using strain gauges, and then amplifying and processing the signal to give an accurate weight reading.

Entry Level Linear Scales

Application

Products: Free flow products.
Materials: Pouches, jars, tubs, bags

The iQ-1E is an entry level scale that can weigh 5 grams to 5 lbs. of free flowing products like whole bean and ground coffee, small nuts, rice, grains, spices, small candies, teas, popcorn and similar products. The iQ-1E is the economy model that is dependable and handles many applications for small to medium volume requirements.

• No change parts needed when filling from 1 ounce to 5 pounds.
• Air compressor comes standard allowing for single button start-up.
• The load cell (the most important instrument on the scale) is sensitive yet durable. It is encased to protect against dust and water damage and has 800% overload protection.
• All contact parts are stainless steel.
• Weigh bucket disconnects easily for cleaning.
• Accuracy is from 0 to .01 pounds over.
• All controls are made from off-the-shelf parts for easy maintenance and local service worldwide.
• Touch screen, menu driven controls for easy set-up and multiple features including job memory storage, batch counting, auto-zero and the self-teaching feature.

High-Speed Low Cost Scales

Application

Products: Free flow products.
Materials: Pouches, jars, tubs, bags

The Shuttle and Flip provide small, high speed scales at prices well below combination scales. With the right type of products the shuttle and reach 50 fills per minute and the shuttle up to 80.

They offer an alternative to combination scale for certain applications. You should speak to your representative at Right Stuff Equipment to guide you through the alternatives. 303-327-4704.

Both scales use a continuous stream of product into the weigh hopper(s). These scales are package free flowing products that are smaller piece size and consistent in shape like coffee beans, rice, small candies, pellets and similar products.

The Shuttle is a two-bucket linear scale that shuttles the stream from bucket “A” to bucket “B” and guarantees no underweights.

The Flip uses an oscillating weigh bucket directing the product to side “A” or side “B” of the bucket providing high speed. Accuracy is somewhat product dependent. Samples are needed for testing to determine +/- accuracy.

Both these scales are designed for fully automatic operation with an automatic bagger or container indexing conveyor.

Large Volume Bulk Fillers

Application

Products: Free flow products.
Materials: Cases, boxes, bag in a box, 25 and 50# bags.

Weigh Right has 4 categories of Large Volume Fillers, to find the right one for you, choose from the following:

• Belt Feed Models
  To weigh and fill moist, sticky or IQF food products. Weigh Right’s Belt Feed Models are Large Volume Bulk Fillers that weigh and fill 5 lbs. to 100 lbs. of product into bag-n-box cases, bags or tubs.
• Standard Vibratory Feed Models
  To weigh and fill powders, nuts, snacks, candies, plastic pieces and other dry products. 5 to 100 lbs.
• High Volume-Capacity Vibratory Fillers
  Weigh Right’s new line of vibratory Large Volume Fillers to fill your products into cases or bags faster than our standard large volume scales. 5 to 100 lbs.
• Gravity Feed Scales
  To weigh and fill free flowing products like bird seed, grains, corn, beans, and similar products with 50% more speed than vibratory feed models. 5 to 100 lbs.