YSI MultiLab 4010-1W, Руководство по эксплуатации

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Conductivity MultiLab 4010-1W
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ba76141e07 08/2018
8.3 Calibration
8.3.1 Why calibrate?
Aging slightly changes the cell constant, e. g. due to coatings. As a result, an
inexact measured value is displayed. The original characteristics of the cell can
often be restored by cleaning the cell. Calibration determines the current value
of the cell constant and stores this value in the meter.
Thus, you should calibrate at regular intervals.
8.3.2 When to calibrate?

Routinely within the framework of the company quality assurance

When the calibration interval has expired
8.3.3 Calibration procedure
The MultiLab 4010-1W provides 2 calibration procedures:

Determining the cell constant
Calibration in the check- and calibration standard 0.01 mol/l KCl (1413 µS/
cm @25 °C)
Safe and simple calibration procedure for IDS conductivity sensors with a
cell constant in the range 0.450 ... 0.500 cm
-1
.

Determining the cell constant
Calibration with freely selectable check- and calibration standard
Comprehensive and flexible calibration procedure for all IDS conductivity
sensors, irrespective of the cell constant.
Which calibration procedures can be used depends on the conductivity sensor
used. The menu for measurement settings automatically displays only those
settings and calibration procedures that are available for the sensor.
8.3.4 Determining the cell constant (calibration in the check- and cali-
bration standard)
For this calibration procedure, IDS conductivity sensors with a cell constant in
Salinity (seawater) Automatic nLF according to
IOT (International Oceano-
graphic Tables)
Sal , nLF
With conductivity sensors for which a cell constant was set, no
sensor symbol appears on the display.
If a calibration interval was specified, it is not active.
Test sample Temperature compensation Display