Xylem WTW Turb 750 IR Operating Manual page 70

Lists
Adjusting
Calibration
Measured parameter
Measured value
Measuring system
Molality
Reset
Resolution
Standard solution
Test sample
70
Glossary
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.
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
The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or DO concentration.
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).
The measuring system comprises all the devices used for measuring,
e. g. measuring instrument and probe. In addition, there is the cable
and possibly an amplifier, terminal box and armature.
Molality is the quantity (in Mol) of a dissolved substance in 1000 g sol-
vent.
Restoring the original condition of all settings of a measuring system.
Smallest difference between two measured values that can be dis-
played by a meter.
The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
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.
®
Turb 750 IR/T
®
750 IR/T.
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