Walz Scale Calibration Services Overview

Walz Scale has been providing the very best calibration services for our customers for over 60 years. We have invested in the very best equipment and trained the best technicians to deliver the highest quality, expert scale calibration services.

Calibration of a scale is a procedure in which a certified scale technician uses known weight certified by the Weights and Measures Department to adjust the response of a mechanical or electronic weighing system to the following tests:
• The indicator must show zero when there is no weight on scale.
• When a known weight is applied the indicator must display the exact amount of applied weight.
• When weight is applied or removed incrementally the scale must display weight equal to that on the scale display.

All scales ideally need to be calibrated when first placed into service to insure accurate operation. Any scale will drift away from its original calibration over the course of time. Wear of mechanical components, age, and degree of use all contribute to calibration drift. Many states require that any scale used to buy or sell based on weight must be NTEP-approved and inspected and certified as to its accuracy. Normally, we recommend calibration every quarter by a trained scale technician with certified test weights.

There are several factors to consider when deciding on frequency of scale calibration testing. Ask yourself — is the scale operating in a hostile environment? How much is this equipment being used? Is it being used one, two, or three shifts, or only several times a week? Are there Quality Control parameters which must be maintained such as ISO 9000? How long can your company afford to allow your scale equipment to operate with a possible error in its weight readings? After factoring all the information above, many customers feel calibration service once a quarter is ideal.

Walz Scale will assist in setting up your custom scale service agreement program by taking into consideration all of the above questions. It is recommended that scales be calibrated quarterly. Walz Scale will perform the tests as prescribed in the service agreement statement.