Scales normally "drift" a little over the time. Change in altitude, temperature, or humidity will also affect the behavior of the scale. Re-calibration of the scale is necessary once you notice excessive error in reading.
How to re-calibrate your scale
Most scales allow "automatic calibration". Strictly speaking, Scale calibration can never be automatic. It just means the calibration can be easily done through some key combinations and with standard weight(s). Follow the manual to perform the re-calibration. The four typical calibration procedures are summarized below for your quick reference:
- Turn on the scale; press and hold "UNIT/M" button until "CAL" is displayed; release "UNIT/M" button; wait for 3 seconds; press "UNIT/M" again; wait for the display of the required weight (usually flashing); gently put the weight at the center of platform; remove the weight after "pass" is displayed. (Examples: MH-200, IPS-100)
- Turn on the scale; press and hold "ON/OFF" button until "0" is displayed; release the "ON/OFF" button; wait until the required weight is displayed; gently place the weight on the platform; remove the weight after "pass" is displayed. (Example: DS-16, DS-18)
- Turn on the scale; press and hold "UNIT/M" button until "CAL" is displayed; release "UNIT/M" button; wait for 3 seconds; press "UNIT/M" again; wait for the display of the required weight (usually flashing); gently place the weight on the platform; press "ON/OFF" button; remove weight after "pass" is displayed. (Example: CG2-100)
- With the scale off, press and hold "ON/OFF" button; while holding the "ON/OFF" button, quickly press "UNIT/M" button twice; after some random symbols are shown, release "ON/OFF" button; press "ON/OFF" again; after the required weight is displayed, place the weight on the platform; press "ON/OFF" again; remove weight after "pass" is displayed. (Example: CD-500)
Special Calibration
Special calibration is required when one of the load sensors is damaged (a situation usually indicated by the notorious "OUE2" message on the display). The special calibration will re-program the scale to work with the remaining sensors. A typical special calibration procedure is as follows:
- Turn off scale
- Turn on the scale, then immediately press and hold both "M/UNIT" and "T" at the same time
- After "CAL" is displayed, release both buttons. A random number may be displayed
- Press "M/UNIT" again. After the required weight is shown, place the weight gently at the *center* of the platform
- Wait for 2 second, then press "M/UNIT" again
- Calibration is complete after "PASS" is displayed
Your scale may function again after the special calibration. However, the reading will be sensitive to the location on the platform where the load is applied (I will explain why in a separate guide).
Calibration weights
Standard calibration weights are recommended for scale re-calibration, especially for high resolution scales. If you don't have standard weights, you can make one yourself as follows:
- Your scales are pre-calibrated. After you receive the scale, turn on the scale, then place a small tray (or anything rigid and flat) onto the platform
- Gently add small things (e.g., paper clips, buttons) to the tray until the required calibration weight is reached
- Save this tray of things and use it for re-calibration. Note that some scales require multiple calibration weights, and you may need to repeat the process.
Please visit our store for calibration weights and scale + weight(s) combo deals --
ANYVOLUME Calibration Weights
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