Conductivity Meters


Conductivity meters are devices for measuring the electrical conductivity in a solution. Distilled water is a poor electrical conductor and the substances or salts dissolved in the water determine how conductive the solution will be, as the number of dissolved ions increases, so does the solution’s ability to carry an electrical charge. This electrical charge is what allows a conductivity meter to measure the conductance of a solution.
How do they work?
A conductivity meter consists of a probe that measures conductivity. A small electrical current flows between two electrodes set a certain distance apart, usually around 1 cm. If there is a high concentration of ions in the solution, the conductance is high, resulting in a fast current. The electrical current is slower and gives a smaller reading when a lower concentration of ions is present.
They are commonly used in hydroponics, aquaculture and freshwater systems to monitor the number of nutrients, salts or impurities in the water. Conductivity meters must be calibrated to provide accurate results.
Advantages
• Available as a controller or an analyser to be implemented in process situations
• Able to make a sampling measurement in less than one second
Disadvantages
• Cannot distinguish between different types of ions
• Conductivity meters are temperature dependent, conductance increases approximately 2% per °C
• Does not measure the number of ions in a solution directly
Uses
• Agriculture to measure the salinity levels of surface water and of soil samples
• Wastewater treatment facility to measure the quality of water
• Water conditioning (softener, demineralisation, aquariums, pollution control)
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Detalii produs Marca Stock Maximum Conductivity Minimum Conductivity Resolution Battery Type Battery Life Power Source Dimensions Weight Height Length Maximum Temperature Compensation Model Number p Width Minimum Temperature Compensation Maximum Operating Temperature
Hanna Instruments HI98303 Conductivity Meter, 0 → 1999 μS/cm Hanna Instruments 78 1999µS/cm - 1 μS/cm Button Cell (1.5 V) x 4 200 h Battery 175 x 41 x 23mm 95g 23mm 175mm +50°C HI 98303 41mm 0°C +50°C
RS PRO Conductivity Meter, 0.1 → 199.9 μS/cm, 0.2 → 19.99 mS/cm RS Pro 41 19.99 mS/cm, 199.9 μS/cm 0.1 μS/cm, 0.2 mS/cm 0.1 μS/cm, 0.01 mS/cm 9V, PP3 - Battery 72 x 32 x 180mm - 180mm 72mm - CD4303 32mm - -
Hanna Instruments HI-98308 Conductivity Meter, 0 → 99 μS/cm Hanna Instruments 35 99µS/cm 0µS/cm 0.1 μS/cm Button Cell (1.5 V) x 4 250 h Battery 175 x 41 x 23mm 95g 23mm 175mm +50°C HI 98308 41mm 0°C +50°C
Hanna Instruments PRIMO5 Conductivity Meter, 0 → 1999 μS/cm Hanna Instruments 32 1999µS/cm 0µS/cm 1 μS/cm Button Cell (1.5 V) x 2 200 h Battery 180 x 50 x 25mm 50g 25mm 180mm +60°C PRIMO5 50mm 0°C +50°C
Hanna Instruments HI98312 Water Conductivity Meter, 0 → 20 mS/cm Hanna Instruments 26 20mS/cm 0mS/cm 0.01 mS/cm Button Cell (1.5 V) x 4 100 h Battery 163 x 40 x 26mm 100g 26mm 163mm - HI 98312 40mm - +50°C
ORP pocket conductivity meter,+/-999mV Hanna Instruments 15 - - - Button Cell (1.5 V) x 4 700 h Battery 175 x 41 x 23mm 95g 23mm 175mm - HI 98201 41mm - +50°C
Hanna Instruments HI 98304 Conductivity Meter, 0 → 19.99 mS/cm Hanna Instruments 11 19.99mS/cm - 0.01 mS/cm Button Cell (1.5 V) x 4 200 h Battery 175 x 41 x 23mm 95g 23mm 175mm +50°C HI 98304 41mm 0°C +50°C
Hanna Instruments HI99300 Conductivity Meter, 0 → 3999 μS/cm Hanna Instruments 11 3999µS/cm 0µS/cm 1 μS/cm AAA 500 h Battery 143 x 80 x 38mm 320g 38mm 143mm +60°C HI 99300 80mm 0°C +50°C
Hanna Instruments HI-98304 Conductivity Meter, 0 → 19.99 mS/cm Hanna Instruments 9 19.99mS/cm - 0.01 mS/cm Button Cell (1.5 V) x 4 200 h Battery 175 x 41 x 23mm 95g 23mm 175mm +50°C HI 98304 41mm 0°C +50°C
Hanna Instruments HI983307-02 Conductivity Meter, 0 → 9.99 mS/cm Hanna Instruments 6 9.99mS/cm 0mS/cm 0.01 mS/cm - - Mains 86 x 110 x 43mm 215g 43mm 86mm +50°C HI 983307 110mm +5°C +50°C
Hanna Instruments HI99301 Conductivity Meter, 0 → 20 mS/cm Hanna Instruments 6 20mS/cm 0mS/cm 0.01 mS/cm AAA 500 h Battery 143 x 80 x 38mm 320g 38mm 143mm +60°C HI 99301 80mm 0°C +50°C
Georg Fischer 198844001 Conductivity Meter, 10 → 10000 μS Georg Fischer 3 - - - - - - - - - 152mm - 3-2821-1 12.7mm - -
Jumo 202924/10-0010-1003-105-37-88-26/000 Conductivity Meter, 1 μS/cm → 1mS/cm
  • Nr. Stoc RS 386-8534
  • Marca Jumo
  • Cod Producator 202924/10-0010-1003-105-37-88-26/000
Jumo 3 1mS/cm 1mS/cm - - - - - - 143mm - - JUMO tecLine Lf-VA 45mm - +200°C
Georg Fischer 159001699 Conductivity Meter Georg Fischer 2 - - - - - Battery - - - - - 3-9900.394 - - -
Georg Fischer 198844000 Conductivity Meter, 1 → 1000 μS Georg Fischer 1 - - - - - - - - - 152mm - 3-2820-1 12.7mm - -
Georg Fischer 198844010 Conductivity Meter, 0.055 → 100 μS Georg Fischer 1 - - - - - - - - - 152mm - 3-2819-1 12.7mm - -
Jumo 202924/10-0001-1003-105-37-88-26/000 Water Conductivity Meter, 0.5 → 10 μS/cm
  • Nr. Stoc RS 327-5803
  • Marca Jumo
  • Cod Producator 202924/10-0001-1003-105-37-88-26/000
Jumo 0 10µS/cm 0.5µS/cm - - - - - - - - - JUMO tecLine Lf-VA - - +200°C
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