Senseca ECO 523 handleiding
Handleiding
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ECO 52x series - Handheld Conductivity Meter / EC-Meter
Measurement Basics
B-H87.0.0X.DK2-4.1 Page 12 of 24
5 Measurement Basics
5.1 Conductivity principles
Conductivity γ
Conductivity describes the capability of a material to conduct electrical current. It is also the
inverse of specific resistance. The conductance is the inverse of the measured resistance R.
Formula:
γ = l / (R*A)
• l = length of the material
• A = cross section
• R = measured resistance
• Unit [γ] = Siemens / meter = S / m
Normally, the values for liquids are specified in µS/cm or in mS/cm
5.2 General information about conductivity measuring
During the measurement, the conductivity measuring cell must be dipped at least in so far,
that at least 30 mm (ECO 523: 25 mm) beginning from the top of the measuring cell, is lo-
cated in the medium. The maximum immersion depth for continuous operation should not
exceed 110 mm (ECO 523: 70 mm)
Illustration: Measuring cell ECO 522
The measuring cell can either be stored dry or in water. After dry storage wetting time will be
prolonged slightly. If changing over from one liquid to another with conductivities varying
widely make sure to properly rinse and shake dry measuring cell.
If conductivity measured is much higher or lower than expected this may be due to the
electrode being soiled with non-conducting or conducting foreign materials. Measuring cell
has to be cleaned with a watery soap solution. When measuring media with low
conductivities the electrode has to be stirred sufficiently.
Recommended immersion depth
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Productinformatie
| Merk | Senseca |
| Model | ECO 523 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2462 MB |
