How to Calibrate a WeighMax Scale


WeighMax manufactures industrial, bathroom, kitchen, postal, pocket and tabletop digital scales. In addition, the company makes calibration accessories for its scales. These calibration accessories are small weights of different mass, such as 50, 100, 200 and 500 grams. WeighMax scales can be calibrated using either WeighMax calibration accessories or any other object with a known mass.

Things You'll Need

  • WeighMax scale
  • Instruction manual
  • WeighMax calibration accessories
  • Locate the user manual that came with your WeighMax scale. The manual has specific instructions for calibrating your scale. If you do not have the user manual, go to the WeighMax website and contact the company for a copy of the user manual.

  • Select a WeighMax calibration accessory equal to the maximum weight for your type of WeighMax scale. For instance, if you have an industrial scale, such as one used in a medical laboratory, maximum weight may be about 500 grams. If you are calibrating a pocket scale, you will need a smaller weight, probably from 1 to 50 grams. Do not overload the scale, because this could damage it. If "OUTZ," EE" or "EEE" displays on the LCD screen, the scale is overloaded. If you do not have a WeighMax calibration accessory, use an object with a known mass.

  • Place the scale on a flat surface in a room at normal room temperature. Turn on the scale. Wait until the scale reads 0. Press and hold the calibrate key, which is marked "CAL." Wait until "CAL" is displayed on the LCD screen. The calibration display will then read the zero point, "0.0." Press the "CAL" key again and hold it for two to three seconds to wait for the scale to calibrate the zero point and display the full capacity. The LCD screen should read the full capacity for that scale, such as "500 g." Place a weight on the scale equal to the full capacity of the scale. For instance, if the full capacity is 500 grams, place a 500-gram weight on the scale. Wait three seconds and press "CAL." The LCD should read "PASS" and the mass of the weight used, such "500 g." Calibration is completed.


  • Photo Credit Ryan McVay/Photodisc/Getty Images
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