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22. TERMS/INDEX
Terms
Stable value The stable weight data, indicated by the illuminated stabilization indicator.
Environment Ambient conditions such as vibration, drafts, temperature, static electricity
and magnetic fields which affect the weighing operation.
Store To save the weighing data, unit mass or calibration data using the data
memory function.
Calibration Adjustment of the balance so that it can weigh accurately.
Output To output the weighing data using the RS-232C interface.
Zero point A weighing reference point. Usually refers to the value displayed when
nothing is on the weighing pan.
Smart range function Allows weighing in the precision range, even if a heavy tare is used.
Data number Numbers assigned sequentially when weighing data or unit weight is stored.
Digit The minimum weighing value available. Used for the balance, 1 digit is the
smallest displayable mass.
Tare To cancel the weight of a container which is not to be included in the
weighing data. Normally, refers to an operation of placing a container and
setting the display to zero.
Mode Balance operational function.
Re-zero To set the display to zero.
GLP Good Laboratory Practice.
Repeatability Variation in measured values obtained when the same mass is placed and
removed repetitively. Usually expressed as a standard deviation.
e.g. Standard deviation=1 digit: This means that measured values, obtained
when the same sample is placed and removed repetitively, 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 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 = 3 ppm/°C : If a load is 20 kg and the
temperature changes by 10°C, the value displayed changes by the following
value.
0.0003%/°C x 10°C x 20 kg = 0.6 g
In this example, if the value displayed is 20.0000 kg before temperature
changes, a temperature change of 10°C will make the value displayed
20.0006 kg.