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8.0 CALIBRATION
• Calibration may be required when the balance is initially installed or
| if the balance is moved from a location. |
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• | With time and use, mechanical deviations may occur. | Therefore | ||||||||
| calibrate the balance whenever the best accuracy is required or | |||||||||
| when any deviation is observed during weighing a test weight. | |||||||||
• | Before calibrating it is necessary to have the proper | calibration | ||||||||
| weights. The weights should be known to an accuracy that is | |||||||||
| appropriate for the balance being calibrated, for example, OIML | |||||||||
| Class M1 type or ASTM E617 Class 4. If you do not have proper | |||||||||
| weights do not attempt calibration. |
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Model |
| AQT- 250 |
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Calibration |
| 100g | 200g | 500g | 1000g |
| 1000g | 1000g |
| 2000g |
Weight |
| Or | Or | Or | Or |
| Or | Or |
| Or |
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| 200g | 250g | 600g | 1500g |
| 2000g | 2000g |
| 5000g |
8.1 AUTO CALIBRATION (FOR AQT 200 ONLY)
• Before entering calibration mode, press [On/Off] to turn the power on for 1 minute.
Enter calibration mode
•Press [On/Off] to turn the power off.
•Press [Unit] first and then press [On/Off], while keeping the [Unit] key pressed. The display will show the A/D value. Then press [Unit] and the display will show the last calibration value used, press [Tare] to choose either 100g or 200g.
Calibration
•Wait for the stable indicator to be displayed,
•Press [Unit] - the display will show “L 100" or “L 200”, with the "L" flashing.
Place the appropriate weight on the platform. A beep will be heard after a few seconds and the display will show the weights value.
•Press [On/Off], to turn off the power.
•Press [On/Off] to turn on the power again. Place maximum weight (200g) on the platform to verify weighing is correct. If not, repeat the calibration.