WATERPROOF pH / CONDUCTIVITY / SALINITY METER
CPC-411

The most important features

• Simple but accurate field and laboratory meter.
• Measures pH, redox potential (ORP), conductivity, salinity and temperature.
• The display enables simultaneous readout of the measured function and temperature value.
• pH electrode calibration in 1 to 3 constant points (4.00, 7.00, 9.00 pH), conductivity in 1 point.
• In the conductivity function the α coefficient has a constant value (2%/°C).
• Memory of 50 results.
• No PC connection.

Detailed description

Easy in use simple meter of good accuracy.
Measures: pH, mV (redox potential), conductivity, salinity and temperature.

Characteristic features:

• Used for work in the field and in the laboratory.
• Small size and low weight make working in the field easier.
• Waterproof housing (IP-66) facilitates work in difficult conditions.
• The LCD enables simultaneous readout of the measured function and temperature value.
• pH and conductivity circuits are isolated. This eliminates the influence of one measurement to the other.
• Very easy in use.

In the pH measurement mode:

• Calibration in 1 ÷ 3 points in buffer solutions.
• Automatic detection of the pH buffer solution’s value 4.00, 7.00, 9.00 pH (optionally: 4.00, 7.00, 10.00 pH).
• Automatic temperature compensation.
• Depending on the chosen electrode, enables measurement in clean water, sewage, pastes, etc.
• The electrode's buffer and slope readout.

In the redox (mV) measuring function:

• Accuracy ±1 mV in redox potential measurement.
• Possibility of automatic calculation of the redox potential result, received with the chloride/silver electrode, to the hydrogen electrode.

In the conductivity measurement mode:

• Enables measurements of clean water and samples with conductivity up to 199.9 mS/cm.
• 4 sub-ranges switched automatically (autorange).
• Measures salinity with conversion to NaCl up to 177,9 g/l.
• Converts conductivity into salinity according to real characteristic and not a constant coefficient.
• Automatic temperature compensation.
• Constant temperature compensation coefficient α = 2% / °C. For precise measurements with temperature compensation we recommend the meters of series 401 or 461.
• Reference temperature 25 °C or 20 °C for measurements made in honey.
• In set with accurate ECF-1 conductivity cell. 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 and PVC body protects it against mechanical damage.
• Possibility to measure electric admittance of tree seedlings – checking the vitality of seedlings with a special sensor.

Other features:

• Automatic switch off function preserves battery life.
• Memory of 50 results.
• Warranty - 24 months for the meter.
• The user's manual in English on a pendrive added to the set.

The standard set includes: ECF-1 conductivity sensor, CT2B-121 temperature sensor with Pt-1000B resistor, EPS-1 pH electrode for measurements in clean water. It should not be used in other types of liquid. Measurements in liquids with sediments should be made with use of IJ-44A pH electrode, which enables measurements in various samples of both pure and contaminated liquids and semi-solids. Its unusual construction (”intermediate junction”) protects the real junction (diaphragma) of the electrode against clogging, ensures stable measurements in these types of liquids or semi-liquid masses, in which other electrodes stop working quickly. When properly handled and maintained the electrode's lifetime is longer than the standard electrodes.

TECHNICAL DATA