LaMotte CON 6 PLUS, Руководство пользователя

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3.2 Preparing the Meter for Calibration
For the best results, select a standard with a concentration close to the
concentration of the sample being measured. Alternatively, a calibration
standard with a concentration that is approximately 2/3 the full-scale
of the measurement range. For example, in the 0 to 2000 μ S/cm
conductivity range, use a 1413 μ S/cm standard for calibration.
Use fresh calibration standards. Reuse of standard solutions may impair
the calibration and the accuracy of measurements. Store solutions in a
dry, dark, cool environment and limit exposure to air.
Rinse or immerse the probe in clear water before calibration and between
samples. Deionized water is ideal.
3.3 Selection of Auto or Manual Calibration (CON 6 PLUS)
The CON 6 PLUS is capable of automatic or manual calibration. The
factory default setting is automatic.
In the automatic calibration mode, the CON 6 PLUS will automatically
select one of four calibration standard values (see below) depending on
the range and normalization temperature being used.
Automatic calibration is useful when all of the calibration standards
fall into one of the groups listed below. For example, if the 1413 μ S/
cm standard reads as 1400 μ S/cm during calibration, press “ENTER” to
accept this value as 1413 μ S/cm using the automatic mode. In manual
mode, the increment button would have had to be pressed 13 times to
adjust the value to 1413 μ S/cm to before pressing “ENTER”.
Normalization
Temperature
Calibration Standards (Range)
25 °C
1. 84 μ S/cm (for 0 – 200 μ S/cm)
2. 1413 μ S/cm (for 0 – 2000 μ S/cm)
3. 12.88 mS/cm (for 0.00 – 20.00 mS/cm)
4. 111.8 mS/cm (for 0.0 – 200.0 mS/cm)
20 °C
1. 76 μ S/cm (for 0 – 200 μ S/cm)
2. 1278 μ S/cm (for 0 – 2000 μ S/cm)
3. 11.67 mS/cm (for 0.00 – 20.00 mS/cm)
4. 102.1 mS/cm (for 0.0 – 200.0 mS/cm)
Table 1: Conductivity Calibration Standards for Auto Calibrations
If a calibration standard is used that is not listed above, select manual
calibration.