LABORATORY pH / CONDUCTIVITY / SALINITY METER
CPC-502

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The most important features:

• High accuracy and repeatability in all measuring functions.
• CPC-502 measures pH, redox potential (mV), conductivity, salinity, TDS, resistivity and temperature.
• The meter has a built in thermal printer (60mm).
• Calibration pH: 1 ÷ 5 points, condctivity: 1-5 points.
• Automatic correction of the temperature influence on standard solution value (NIST), what eliminates the necessity of warming up or cooling them down.
• Wide range of α coefficient.
• Memory of 4000 results.
• USB output

Detailed description:

Characteristic features:

• Easy-to-read backlit LCD facilitates working.
• Built-in thermal printer (60 mm).
• “HOLD” function enables freezing the result on the display.
• Signalisation of the result stabilisation with the “READY” symbol and a sound.
• Possibility of sending a calibration report to a PC - up to 10 last calibrations.
• Standardised procedures in all measuring functions make working easier.

In the pH measuring function:

• Depending on the chosen electrode making measurement in pure water, sewage, soil or other samples is possible.
• pH electrode calibration: 1 ÷ 5 points.
• Automatic detection of pH buffers entered by the user.
• Automatic correction of the standard solution value (NIST) with the temperature changes, it is not necessary to adjust the temperature of the solution.
• Possibility of storing 3 electrodes’ characteristics makes their fast changing easy.
• Automatic evaluation of the electrode’s condition.
• Possibility of the electrode's characteristic readout (offset and slope).
• The pH and conductivity measurement circuits are isolated, what eliminates the interference between them.

In the mV and redox potential measurement function:

• Precise redox potential measurement (accuracy 0.1 mV).
• Possibility of mV measurement in relation to the set or measured reference potential – Vref.

In the conductivity measuring mode:

• Wide measuring range enables measurements in ultra pure water, natural water as well as in high conductivity samples.
• 6 sub-ranges switched automatically.
• Calibration by entering the K constant in range 0.010 ÷ 19.999 cm-1 or in standard solutions in 1 ÷ 5 points.
• Possibility of storing K constant of 3 conductivity cells.
• Possibility of changing the reference temperature.
• Wide range of the α coefficient (0.00 ÷ 10.00 % / °C).
• 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 water, 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.
• Automatic conversion of conductivity into salinity in NaCl or KCl on the basis of the actual characteristics and not a constant coefficient, what greatly increases accuracy.
• Defining the TDS (Total Dissolved Solids) based on conductivity measurement.
• In set with high accuracy ECF-1 conductivity cell. Measuring range: 0 ¸ 400 mS/cm is sufficient for conductivity measurements in majority of liquids of maximal concentration, e.g. aqueous soil extracts and water with grease or oil. Metal electrodes are easy to clean. Plastic housing protects from mechanical damage.

In the redox (mV) measuring function:

• Precise redox potential measurement (accuracy 0.1mV).
• Possibility to measure redox potential relatively to the entered or measured reference potential – Vref.
• Possibility of automatic calculation of the redox potential result in reference to standard hydrogen electrode.

Other features:

• Automatic or manual temperature compensation.
• Internal clock with date.
• Internal datalogger enables storing up to 4000 measurements taken in series or singly with temperature, time and date.
• Storing the readouts and calibration data in non-volatile memory.
• Software for data collection and transmission to a PC delivered in a set.
• Stores and reminds the calibration date.
• USB output.
• Change of the date protected by a password
• The data transmission software enables printout of the data in a form protected against any changes.
• Change of the date protected by a password
• The data transmission software enables printout of the data in a form protected against any changes.
• The meter meets the GLP requirements.
• 24 months of warranty for the meter.
• Pendrive with software for data transmission and collection and user's manual in English included in the set.