| 21. TERMS/INDEX |
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Terms |
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Stable value | The weight data when the stabilization indicator appears. |
Environment | Ambient conditions such as vibration, drafts, temperature, static electricity and |
| magnetic fields which affect the weighing operation. |
Calibration | Adjustment of the balance so that it can weigh accurately. |
Output | To output the weight data using the |
Zero point | A weighing reference point or the zero display. Usually refers to the value |
| displayed when nothing is on the weighing pan. |
Digit | Unit of digital resolution. Used for the balance, a unit of minimum weighing value. |
Tare | To cancel the weight of a container which is not included in the weight data. |
Mode | Balance operational function. |
To set the display to zero. | |
GLP | Good Laboratory Practice. |
Repeatability | Variation in measured values obtained when the same weight is placed and |
| removed repetitively. Usually expressed as a standard deviation. |
| e.g. Standard deviation=1 digit: This means that measured values fall within ±1 |
| digit in the frequency of about 68%. |
Stabilization time Time required after a sample being placed, until the stabilization indicator illuminates and the weight data is displayed.
Sensitivity drift An affect that a change in temperature causes to the weight data. Expressed as temperature coefficient.
e.g. Temperature coefficient = 2 ppm/°C : If a load is 300 g and the temperature changes by 10°C, the value displayed changes by the following value. 0.0002%/°C x 10°C x 300 g = 6 mg
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