WATERPROOF pH / CONDUCTIVITY / SALINITY METER CPC-401

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The most important features:

• Very high accuracy meter for use in the field and laboratory.
• Measures pH, redox potential (ORP), conductivity, salinity, TDS, resistivity and temperature.
• Backlit display enables observation of the chosen function and temperature.
• Calibration in 1 to 5 points.
• In the pH function automatic correction of the pH standard solution value changes, along with the temperature changes for NIST standards.
• In the conductivity measurement function automatic selection of the temperature coefficient for natural and ultra pure water.
• Memory of 4 000 results.
• USB output.
• Small size and weight.
• Waterproof housing.
• Meets the GLP requirements.

Detailed description:

Characteristic features:

• Used for work in the field and in the laboratory.
• Waterproof housing (IP-66) facilitates work in difficult conditions.
• The meter is equipped with easy-to-read backlit LCD with brightness control.
• ”HOLD” function to freeze the result on the display.
• Signalisation of the result stabilisation withe the ”READY” symbol and a sound.
• Possibility of sending the calibration report to a PC - up to 10 last calibrations.
• Standarisation of the procedures in all measuring functions makes working easier.

In the pH measurement mode:

• Depending on the chosen electrode, making measurements in clean water, sewage and soil is possible.
• pH electrode calibration in 1 ÷ 5 points.
• Automatic detection of buffer solutions, introduced by the user.
• Automatic correction of the stored pH standard solution value along with the temperature changes for NIST standards, what eliminates the necessity of warming up or cooling them down.
• Storing of 3 pH electrodes’ characteristics enables their quick replacing – very useful feature during field work.
• Automatic evaluation of the electrode’s condition.
• Readout of the pH electrode condition and data - the offset and slope percentage may be viewed.
• The pH and conductivity measurement circuits are isolated, so there is no interference.

In the redox (mV) measuring function:

• Precise redox potential measurement (accuracy 0.1 mV).
• Possibility of making the relative measurement.

In the conductivity measurement function:

• Wide measuring range enables measurements in ultra pure water, natural water as well as in salines and chemical compounds.
• Resistivity measurement of the tested liquid.
• Salinity measurement in conversion to NaCl or KCl.
• Defining TDS (Total Dissolved Solids) based on conductivity measurement.
• 6 sub-ranges switched automatically.
• Wide range of α coefficient chosen depending on the type of measured solution.
• In case of measurements of natural water with conductivity from 60 μS/cm to 1 mS/cm the meter enables using non-linear temperature compensation. The parameters of this type of water are determined in norm EN27888:1999 and concern surface waters, deep water and well water. This solution lowers the measurement error.
• The measurement accuracy of the ultra pure water with temperature compensation was increased by automatic adjustment of the α coefficient depending on the temperature and kind of trace contaminations.
• Calibration by entering the constant K of the cell or in standard solutions in 1 to 5 points.
• Possibility of changing the reference temperature.
• In set with high accuracy ECF-1 conductivity cell. Measuring range 0 ÷ 400 mS/cm sufficient for measurements in ultra pure water and high salt concentration samples. Metal electrodes are easy to clean and PVC body protects it against mechanical damage.
• Possibility of storing K constants of 3 conductivity cells.
• Automatic conversion of conductivity into salinity on the basis of the real characteristics and not a constant coefficient, what greatly increases accuracy.
• Possibility to measure electric admittance of tree seedlings (checking the vitality of seedlings with a special sensor).

Other features:

• Automatic or manual temperature compensation.
• Internal clock with date.
• Internal datalogger enables storing up to 4000 measurements taken as single or in series with time, temperature and date.
• Non-volatile memory of the stored results and calibration data.
• The next calibration date reminder.
• Possibility of connecting with a PC by micro USB connector.
• Change of the date protected by a password
• The data transmission software enables printout of the data in a form protected against any changes.
• Powered by rechargeable batteries, or power adapter with USB - micro USB cable.
• The meter meets the GLP requirements.
• 24 months of warranty for the meter.
• Software for data transmission and collection delivered in the set.