How To Calibrate A Scale Without Weights. The calibration method, calfree™, is the perfect solution for the calibration of tanks, or when placing test weights is impractical or an approximate calibration is sufficient. First, turn the power on, then press the “zero” or “tare” button if there is one present.
It offers a good solution for the calibration of tanks, vessels, silos and hoppers when it is impractical to place test weights or for applications that need an approximate calibration only. You want to reset the scale so that it is at zero. The calibration method, calfree™, is the perfect solution for the calibration of tanks, or when placing test weights is impractical or an approximate calibration is sufficient.
First, turn the power on, then press the “zero” or “tare” button if there is one present.
When the display turns on, remove your foot. Cleaning make sure that the pocket scale is completely clean. How do you calibrate a digital scale without weights? Press and hold the mode key, the middle button that says “m”, until the display reads “cal”.