Thermo Fisher Scientific CyberScan CON 1500 - Manual (Page 48)

Instruction Manual CyberScan CON 1500
44
5. STANDARDISATION
Conductivity probes are generally identified as having a characteristic
cell constant, 0.1, 1.0 or 10.0 which reflects their physical geometry
and their range of application. However, these are typically nominal
cell constants. The actual cell may vary somewhat from the nominal
values, and therefore the actual cell constant must be calculated
using a solution with a known conductivity value. The standardisation
process of the CyberScan CON 1500 meter permits you to obtain the
exact cell constant of your electrode. Standardise the electrode daily
for best results.
Prior to standardising, use the setup menu from measurement screen
to set the desired units, nominal cell constant which best matches the
electrode you are using, temperature coefficient desired (See Theory
section, page 60), temperature units and normalised temperature
and also depending on whether you want to perform a single-point or
multi-point calibration.
Rang
e
Conductivity TDS Resistivity
R1 0 to 200.0 uS 0 to 200.0 ppm 0 to 20.00 K Ω
R2 200.0 uS to 2.000 mS 200.0 ppm to 2000 ppm 20.00 K Ω to 200.0 KΩ
R3 2.000 mS to 20.00 mS 2000 ppm to 20000 ppm 200.0 K Ω to 2.000 M Ω
R4 20.00 mS to 500.0 mS 20000 ppm to 99999 ppm 2.000 M Ω to 100.0 MΩ
Suppose user set single-point calibration option in the setup page,
calibrated Cal Factor will be applied to the whole range (0.000 to
500.0mS).
But if a multi-point calibration option (calibration for different ranges
as indicated in the table shown above) is chosen, calibration factors
are applied only to their respective ranges.