BENCHTOP LABORATORY MULTIFUNCTION METER CX - 505
- CX-505 measures PH, redox potential (mV), conductivity, salinity, resistivity, concentration of oxygen dissolved in water in % of saturation or in mg/l, atmospheric pressure and temperature.
- The measurements made in all measuring functions are of very high accuracy and stability.
- Unification of the procedures in all measuring functions makes working easier.
- “HOLD” function to freeze the result on the display. Signalisation of the result stabilization “READY” with symbol and sound.
- Possibility of sending to a PC a report of calibration – up to 10 last calibrations.
In the PH measuring function:
- Calibration of the PH electrode: 1 to 5 points.
- Automatic detection of the buffers’ value entered by the user. Automatic correction of the standard solution value (NIST) along with the temperature changes.
- Possibility to store characteristics of 3 electrodes makes changing them easily.
- Automatic evaluation of the electrode’s condition.
- Depending on the chosen electrode possible measurements in pure water, sewage, pastes, etc.
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 reading in relation to the chloride/silver electrode to the hydrogen electrode.
In the conductivity measuring function:
- Wide measuring range enables measurements in ultra pure water, natural water as well as in very salty solutions.
- Newly introduced function is the resistivity measurement of the tested liquid.
- Salinity measurement in NaCl or KCl on the basis of the actual real characteristics.
- Defining the TDS (Total Dissolved Solids) based on conductivity measurement.
- 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 is determined in norm EN27888:1999 and concerns 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.
- Wide range of α coefficient 0 to 10 % / °C chosen depending on the measured solution.
- Possibility of changing the reference temperature.
- In set with high accuracy conductivity cell ECF-1. Measuring range 0÷500 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 constant K of 3 conductivity cells. 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.
In the oxygen measurement function:
- Galvanic dissolved oxygen sensor.
- Each of the models equipped with a function of automatic atmospheric pressure measurement with calculation of its influence on the oxygen measurement readout in mg/l.
- The meter with dissolved oxygen sensor are easy to operate.
- Calibration of the oxygen sensor in 1 or 2 points.
- Automatic or manual temperature compensation.
- Possibility of introducing the salinity value with automatic calculation of its influence on the result of oxygen measurement.
- The meter automatically counts the influence of salinity measured in the conductivity mode on the oxygen measurement result.
Other features:
- Automatic or manual temperature compensation.
- Internal clock with date.
- Internal data-logger 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.
- Remembers the next calibration date.
- USB output for connecting with PC.
- The meter meets the GLP requirements.
Function | pH | mV | Conductivity,Salinity | O2 (mg/l) | O2 (%) | Temperature |
Range | -2.000 ÷ 16.000 pH | ±1.999.9 mV | 0 ÷ 1999.9 mS/ cm 0 ÷ 200 g/l KCl 0 ÷ 250 g/l NaCI |
0 ÷ 60 mg/l | 0 ÷ 60 mg/l | -50.0 ÷ 199.9 °C |
Accuracy (± 1 digit) | ± 0.002 pH | ±0.1 mV | ±0.1% >20 mS/ cm: ±0,25% |
±0.1 mg/l | ±1% | ±0.1 °C |
Temp. Compensation | -5 ÷110 °C | – | -5 ÷ 70 °C | 0÷ 40 °C | 0÷ 40 °C | – |
Input Compensation | 1012ΩΩ | 1012ΩΩ | – | – | – | – |
α coefficient | 800÷ 1100 hPa | |||||
Resistivity | Range: 0,500Ωcm, accuracy: ±2% of the measured vlaue | |||||
Atm. Pressure Range | 800 ÷ 1100 hPa | |||||
Dimensions (mm) | L=200, W=180, H=20/50 |