Xylem TURB 430 PORTABLE TURBIDITY METER - Manual (Page 65)

Turb 430 IR/T Lists
65 ba75507e03 07/2006
Glossary
Adjusting To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or a
value that is regarded as correct, or that the difference remains within
the tolerance.
Calibration Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct. Often,
this expression is also used when the measuring system is adjusted at
the same time (see adjusting).
Cell Vessel that takes a liquid sample for measurement.
LED Light Emitting Diode
LEDs are used as the light source in the Turb 430 IR/T.
Measured parameter The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or DO concentration.
Measured value The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Measuring system The measuring system comprises all the devices used for measuring,
e. g. meter and sensor. In addition, there is the cable and possibly an
amplifier, terminal strip and armature.
Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g
solvent.
Reset Restoring the original condition of all settings of a measuring system.
Resolution Smallest difference between two measured values that can be
displayed by a meter.
Standard solution The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
Test sample Designation of the test sample ready to be measured. Normally, a test
sample is made by processing the original sample. The test sample
and original sample are identical if the test sample was not processed.