The most important features:

Detailed description:

CPC-401 is designed for accurate measurement of: pH, redox potential, conductivity, resistivity, salinity and temperature. The currently offered model has been modified and is equipped with new functions which make working easier and ensure higher accuracy.

Characteristic features:

In the pH measurement mode:

In the redox (mV) measuring function:

In the conductivity measurement function:

Other features:

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 liquids. Measurements in liquids with sediments should be made with use of the 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, the electrode's lifetime is longer than the standard electrodes.

Function pH mV Conductivity /
Range -6.000 ÷ 20.000 pH ±1999.9 mV 0 ÷ 1999.9 mS/cm
(autorange) /
0 ÷ 296 g/l NaCl
0 ÷ 239 g/l KCl
-50.0 ÷ 199.9 °C
(±1 digit)
±0.002 pH* ±0.1 mV* up to 19.99 mS/cm ±0,1%*
above 20 mS/cm: ±0,25%* /
salinity 2%*
±0.1 °C**
Temperature compensation -5.0 ÷ 110.0 °C - -5.0 ÷ 70.0 °C -
Input impedance >1012Ω >1012Ω - -
α coefficient - - 0.00 ÷ 10.00 %/°C -
K constant - - 0.010 ÷ 19.999 cm-1 -
Resistivity Range: 0.500 Ωcm ÷ 200 MΩcm, accuracy ±2% of the measured value*
Temperature sensor Pt-1000 standard or accurate
Power supply Rechargeable batteries: 2x AA 1.2 V, 5 V/1000 mA micro USB power adapter
Weight 220 g
Dimensions (mm) L = 149, W = 82, H = 22
* The accuracy of the meter only.
** The accuracy of the meter only. The total error includes the meters and probe’s accuracy. In the range 0 ÷ 100 °C the acceptable error of the probe with Pt-1000B resistor: ±0.8 °C, with Pt-1000A resistor: ±0.35 °C.