For many decades, scale owners had two main choices when it came to purchasing an industrial scale: strain gage scales or force motor scales. If customers needed precision measurements, they were left with only one choice: force motor scales. While force motor scales have their use, they do come with a variety of drawbacks. At Arlyn Scales, because we’ve been in the industry for so long, we saw many of these drawbacks of force motor scales and in turn have developed a revolutionary, internationally patented technology that powers our Ultra Precision Scales. These scales offer precision measurements, without many of the downsides of force motor scales.
What are Some of the Disadvantages of Force Motor Scales?
Force motor scales typically work using a basic level and fulcrum. Attached to one side of the lever is the scale platform. On the other end is a force coil that’s suspended in a magnetic field. A displacement detector, as well as a power amplifier, are able to produce a current that allows the lever to stay balanced in the null position while weight is applied to the scale platform. The electric current necessary to maintain this null position is directly proportional to the weight on the scale platform.
While this design offers precision readings, it also has a number of drawbacks. The first being the sheer cost. Force motor scales are much more expensive than standard strain gage scales, which can make them out of reach for certain customers.
Because the accuracy of force motor scales can change over time, these scales can become affected by changes in vibration, temperature and air currents. To help deal with these types of errors, some force motor scales are equipped with an internal calibration mechanism, which must be recalibrated quite often.
Another extremely important limitation of force motor scales is their capacity constraints. These scales are typically only ideal for extremely low capacity loads (25 lbs. or less in many instances). Large capacity loads would require a high amount of electrical current, which would be impractical, which is why these scales are typically only used to weigh low capacity loads.
Ultra Precision Scales – A Cost-Effective Option for Precision Readings
For many years purchasing managers had few options when it came to an alternative to force motor scales. Thankfully the team at Arlyn Scales have developed our Ultra Precision Scales, which are powered by our patented Surface Acoustic Wave technology, which takes an entirely different approach to providing precision measurements.
Unlike strain gage scales that measure stress or strain, Ultra Precision Scales measure displacement. Our SAW load cells utilize two primary transducers that are affixed to either side of the load cell. Because our load cells aren’t dependent on the amount of stress applied to the spring element, we’re able to reduce the amount that is required by more than 90%. This offers a much stronger and more accurate load cell that is not subject to much of the distortion and deformation of strain gage scales.
Because of the unique way in which measurements are taken using our Ultra Precision Scales, we’re able to minimize many of the errors found with force motor scales, but still achieve precision measurements, even at higher capacities.
Ultra Precision Scales Offer Increased Capacity
As mentioned above, force motor scales are not ideal at high capacities. This is much different than our Ultra Precision Scales, which can be used for both low and high capacities. Below is a breakdown of the capacities and resolution of each of our precision scale models:
- SAW-X – 10 lb. x .0001 lb.
- SAW-T – 25 lb. x .0002 lb.
- SAW-L – 50 lb. x .0005 lb.
- SAW-C – 100 lb. x .001 lb.
- SAW-H – 200 lb. x .002 lb.
- SAW-HL – 200 lb. x .002 lb.
- SAW-JL – 300 lb. x .002 lb.
- SAW-KL – 500 lb. x .005 lb.
- SAW-KXL – 500 lb. .005 lb.
- SAW-MXL – 1,000 lb. x .01 lb.
Ultra Precision Scales Are Competitively Priced
Another massive benefit of our Ultra Precision Scales is their low cost. These scales are typically in the price range of a high-end strain gage scale, whereas force motor scales typically cost several times that. This makes the decision to purchase a precision scale much easier for purchasing managers looking to provide highly accurate readings, but at a price point that they can justify.
Increase Versatility with Ultra Precision Scales
In the past customers were forced to purchase multiple scales if they needed to weigh heavy objects and yet still have the ability to weight small items with precision measurements. Thanks to our Ultra Precision Scales you can have the best of both worlds in that you have the ability to generate precision readings for lower capacity items, but still are able to provide accurate weight readings for higher capacity items as well.
Why Purchase an Ultra Precision Scale from Arlyn Scales?
While we hope we’ve convinced you of the benefits of our Ultra Precision Scales, you may want to know a little bit more about our company before you decide to purchase a scale from us. At Arlyn Scales, we’ve been manufacturing high-quality industrial scales for more than 30 years. We’re actually based in Long Island, New York, where not only our scales are designed, but they’re manufactured as well.
Many of our competitors chose to move their manufacturing operations overseas during the past several years, but we’ve vowed to keep our facilities located in the US. We’re confident this gives us a leg up on our competitors when it comes to spotting any quality control issues early, as well as being able to identify needs in the market where we can provide a solution such as our Ultra Precision Scales.
At Arlyn Scales, we’re committed to providing our customers with the highest quality scale at a price that’s within their budget. We think that our Ultra Precision Scales are a great example of this mantra. To learn more about our entire line of industrial scales don’t hesitate to reach out team today by phone at 800-645-4301 or through our online contact form.