We’ve actually covered the subject of how often to calibrate a scale before but it’s always a good idea to remind customers just how important the accuracy of their scales can be. We get this question fairly often so today with the help of Doran Scales we’ll take another look at why it’s important to have your scales calibrated on a regular basis by a trained scale technician.
What is the value of the product to be weighed on the scale?
If the product being weighed is very expensive, there is value in regular and periodic inspection and calibration. For example if the product costs $10 a pound and on an average day 1,000 pounds of product is weighed on the scale, the total value is $10,000. Let’s assume the scale is out of tolerance by 0.5%; that discrepancy would be $50 per day, $250 per week, and $1,000 per month. Obviously, eliminating this error would save a tremendous amount of money and more than pay for the calibration services.
Is it a legal-for-trade application?
If you buy or sell product based upon weight using your scale, it will need to be inspected and certified by the State or local Weights and Measures Department at the time of or shortly after installation. If a scale is tested and found to be out of tolerance or if products in the field are found to not meet the stated weight, Weights and Measure can condemn the scales so that they cannot be used until recalibrated, and literally shut your production down.
How many weighments per day and at what % of scale capacity?
Generally speaking, with time and use scales can start to lose accuracy. It may be a tiny error but over months and years it can grow to unacceptable levels. Think of it in these terms: when you buy a new car, you can expect that the wheel alignment will be exactly accurate. When this same car has 75,000 or 100,000 miles on it, the wheel alignment may need to be adjusted due to normal wear and tear. The same idea is true with your scale. Regular calibration of heavily used scales will correct any accuracy errors that will normally occur with this type of use.
Are the scales frequently moved around in your facility or from one location to another?
Doran scales are designed to be portable, in the sense that they do not require a permanent installation location. However, many times when scales are moved, they are handled incorrectly, resulting in damage that can affect the calibration and accuracy of the unit. If your scales are constantly being moved around in your facility or moved from one location to another, regular calibration will help keep them accurate and reveal any damage that may have occurred when they have been moved.
Having your scales calibrated every month or perhaps every quarter makes good sense in a lot of cases. As you can see from a few of the examples above, just a slight error can really add up over time. At Central Carolina Scale, we make the calibration process for our customers really easy. Just contact us with the quantity of scales you have including the manufacturer model numbers and capacities along with your physical address where the scales are located and we can get a calibration quote put together for you. You’ll save money with reduced hourly rates and mileage fees and you’ll maintain the accuracy of your weighing scales throughout the year.