Cond 3150i handheld conductivity meter
This easy to use handheld conductivity meter will meet all your day-to-day demands.  With only 5 keys, the Cond 3150i handheld conductivity meter provides easy error-free measurement with temperature measurement, automatic temperature compensation and 4-electrode measuring technology.

Cond 3300i handheld conductivity meter
Loaded with additional features, the Cond 3300i handheld conductivity meters include parallel temperature display, integrated datalogger, good laboratory practice (GLP) supporting functions, automatic and manual temperature compensation with linear temperature function and a non-linear function for ultrapure water and natural waters according to EN 27 888.  The handheld conductivity meter's temperature compensation can be switched off; either 68 °F or 77 °F (20 °C or 25 °C) can be selected as the reference temperature.

Conductivity meter measurements
Conductivity is a parameter used to measure the ionic concentration and activity of a solution.  The more salt, acid or alkali in a solution, the greater its conductivity.  The unit of conductivity is S/m, often also S/cm.  The scale for aqueous solutions begins with pure water at a conductivity of 0.05 uS/cm (77 °F /25°C).  Naturally occurring waters such as drinking water or surface water have a conductivity in the range 100 – 1000 uS/cm.  At the upper end of the chart some acids and alcalines can be found.

Conductivity measurements are used for applications such as in the production of ultrapure water or determining the salinity of sea water.

Conductivity is measured by making a measurement of the electrical resistance.  The simplest kind of measuring cell used consists of two similar electrodes.  An alternating voltage applied to one of the electrodes causes the ions in the solution to migrate towards the electrodes.  The more ions in the solution, the greater the current which flows between the electrodes.  The instrument measures the current and uses Ohm's law to calculate first the conductance of the solution and then – by taken the cell data into account – the conductivity.

Handheld conductivity meter applications
Using the TetraCon® 325 electrode the Cond 3150i and 3300i handheld conductivity meters will work well in ground water, surface water, laboratory, food industry (juice), swimming pools, pharmaceutics, paint/varnish (soluble), or electorplating measurement applications.

TetraCon® 325 Conductivity Probe
The TetraCon® 4-electrode system sets a new standard for professional conductivity measurements.  In comparison with conventional measuring cells with 2 electrodes, the TetraCon® 325 conductivity cell offers numerous technical advantages:

• Highly accurate and linear because of optimized cell geometry
• Extremely large measuring range with just one cell
• Long-term cell constant stability with high-quality abrasion-resistant graphite electrodes
• Built-in temperature sensor as standard
• Smallest immersion depth possible
• Automatic resistance compensation provides accurate measurements even with a dirty electrode
• Measurement not affected by cable influences, polarization effects or contact with side walls
• Robust, unbreakable epoxy body

Handheld Conductivity Meter Sets
We offer both of these great handheld conductivity meters with a conductivity probe in two convenient kits to make your life easier.  Sets include: A Cond 3150i or 3300i handheld conductivity meter, TetraCon® 325 probe with 5 ft cable, heavy duty fitted case, cal solution, beaker and even a handy probe holding arm.  You will have everything you need for field or plant conductivity measurements in one case.

Handheld Conductivity Meters Specifications

Cond 3150i and 3300i
Range/Resolution:
     Conductivity (both meters): 0.0 uS/cm to 500 mS/cm in 5 measuring ranges or autorange, 0.00 uS/cm to 19.99 uS/cm (for K=0.1 cm^-1)
     Conductivity (3300i only): 0.000 uS/cm to 1.999 uS/cm (for K=0.01 cm^-1)
     Temp: 23 to 221 °F (-5.0 to +105.0 °C)
     Salinity: 0.0 to 70.0
     TDS (3300i only): 0 to1999 mg/l
     Resistivity: 0.000 to 1999 MΩcm
Accuracy:
     Conductivity: + 0.5% of value
     Temperature: + 0.1 K
Reference temp: 68 or 77 °F (20 or 25 °C), selectable
Cell constant:
     3150i: Fixed 0.475 cm^-1, 0.1 cm^-1
     3300i: 0.475 cm^-1, 0.1 cm^-1 and 0.01 cm^-1 fixed and 0.25 to 2.5 cm^-1 and 0.09 to 0.11 cm^-1 adjustable
Temperature comp: Automatic, can be switched off
Power: 4 AA 1.5 V batteries, approx. 3000 hours use
Dimensions (LxWxH): 6.78" x 3.15" x 1.46" (172mm x 80mm x 37mm)
Weight: 0.66 lb (0.3kg)