The most important features:

Detailed description:

CPC-502 measures pH, redox potential (mV), conductivity, salinity in NaCl or KCl, TDS and temperature.
The meter has a built in thermal printer (60mm).
High accuracy and repeatability in all measuring functions.
The operating procedures in all measuring functions have been unified, what makes working trouble-free.

Characteristic features:

In the pH measuring function:

In the mV and redox potential measurement function:

In the conductivity measuring mode:

Other features:

In comparison with CPC-505 the meter has smaller display without backlight. There is no possibility to ”hold” the reading on the display and no information about the reading stabilisation. Does not create calibration reports. No possibility of viewing the electrode's buffer and slope. The meter doesn't have the function of automatic calculations of the α coefficient for natural and ultra pure water.

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 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.

Function pH mV Conductivity /
Range -2.000 ÷ 16.000 pH ±1999.9 mV 0 ÷ 1999.9 mS/cm
(autorange) /
0 ÷ 250 g/l NaCl
0 ÷ 260 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 %
±0.1 °C**
Temp. compensation -5.0 ÷ 110.0 °C - -5.0 ÷ 70.0 °C -
Input impedance >1012Ω >1012Ω - -
α coefficient - - 0.00 ÷ 10.00 %/°C -
K constans - - 0.010 ÷ 19.999 cm-1 -
Temperature sensor Pt-1000 standard or accurate
Power supply 6,5 V / 3,2 A power adapter
Printer Thermal, width: 60 mm
Weight 630 g
Dimensions (mm) L = 200, W = 180, H = 20/50
* 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.