OXYGEN METER CO-502,
pH / OXYGEN METER CPO-502
CONDUCTIVITY / SALINITY / OXYGEN METER CCO-502

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The most important features

• Accurate meters for laboratory use.
• Have a built in 60 mm thermal printer.
• All the models measure dissolved oxygen in % or mg/l, atmospheric pressure and temperature.
• The CCO-502 additionally measures conductivity and salinity.
• The CPO-502 enables measurements of pH and redox (ORP) potential.
• Calibration in 1 or 2 points (0 and 100 %).
• The display enables observation of the chosen function and temperature.
• In the pH function in CPO-502 automatic correction of the pH standard solution value changes, along with the temperature changes for NIST standards.
• Memory of 4000 results.
• USB output

Detailed description:

• CCO-502 model additionally measures conductivity and salinity.
• CPO-502 model additionally measures pH and redox potential.

Characteristic features:

• Easy-to-read backlit LCD facilitates working.
• Standardised procedures in all measuring functions make working easier.
• “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.

Oxygen measurement function:

• Galvanic oxygen sensor, accurate and easy to operate.
• When properly maintained, the sensor may be efficient for several years.
• Possibility to measure oxygen dissolved in water in % or mg/l and oxygen saturation in air in %.
• Calibration of the oxygen sensor in 1 or 2 points.
• Automatic or manual temperature compensation.
• All the models have the same housing, they differ in number of buttons and colours.
• Each model equipped with a function of automatic atmospheric pressure measurement with calculation of its influence on the oxygen measurement readout in mg/l.
• In CO-502 and CPO-502 models possibility of introducing the salinity value with automatic calculation of its influence on the result of oxygen measurement.
• CCO-502 model automatically calculates the influence of salinity measured in the conductivity mode on the oxygen measurement result.

Conductivity measurement function in CCO-502:

• Full conductivity measuring range enables measurements in ultra pure water as well as saline.
• 6 sub-ranges switched automatically.
• 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 by the 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 has been improved by automatic adjustment of the α coefficient depending on the kind of trace contaminations and temperature.
• Calibration by entering the K constant in range 0.01 ÷ 19.999 cm-1 or in standard solutions in 1 – 5 points.
• Wide range of α coefficient chosen depending on a kind of measured liquid.
• Possibility of changing the reference temperature.
• Converting the conductivity into salinity in NaCl and KCl proceeds according to the real characteristics, what greatly increases accuracy.
• Possibility of determining the TDS by entering the TDS coefficient (0.2 to 1.0).
• Resistivity measurement.
• In set with high accuracy conductivity cell ECF-1. Measuring range 0÷400 mS/cm is sufficient for measurements in ultra pure water and high salt concentration samples. Metal electrodes are easy to clean.

pH measurement function in CPO-502:

• The pH and conductivity measurement circuits are isolated.
• pH calibration in 1 ÷ 5 points.
• Automatic detection of the buffer solutions’ values entered by the user.
• Automatic correction of the standard solution’s pH value changes along with the temperature changes for NIST standards, what eliminates the necessity of the standards' temperature adjustment.
• Storing of 3 pH electrodes characteristics enables to replace them quickly.
• Automatic evaluation of the electrode’s condition.
• Readout of the electrode's characteristic (slope, offset).
• Depending on the kind of applied pH electrode it may be used for clear water, sewage, soil measurements etc.

mV, redox potential measurement function in CPO-502:

• Precise redox potential measurement (accuracy 0.1 mV).
• Relative measurement possibility.

Other features

• Automatic or manual temperature compensation.
• Stores the next calibration date.
• Internal clock with date.
• Internal datalogger enables storing up to 4000 measurements taken as single or in series with time, temperature and date.
• The results and calibration data are stored in non-volatile memory.
• USB output for connecting with a PC.
• 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 meters meet 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.