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Stable value
The weight value when the stabilization indicator appears.
Environment
Ambient conditions such as vibration, drafts, temperature, static electricity or
magnetic fields which affect the weighing operation.
Sensitivity adjustment Adjustment of the balance using the calibration weight so that it can weigh accurately.
Output
To output the weighing data using the RS-232C interface.
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 readability. Used for the balance, the minimum displayable weighing value.
Tare
To cancel the weight of a container which is not included in the weighing data.
Re-zero
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 the measured values fall within ±1
digit at a probability of about 68%.
Stabilization time Time required after a sample being placed, until the stabilization indicator illuminates
and the weighing data is displayed.
Sensitivity drift
An affect that a change in temperature causes to the weighing data. Expressed as
temperature coefficient.
e.g. Temperature coefficient = 2 ppm/°C : If a load is 100 g and the temperature
changes by 10°C, the value displayed changes by the following value.
0.0002%/°C x 10°C x 100 g = 2 mg
12. Terms
39
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