pH / CONDUCTIVITY / SALINITY METER CPC-661


The most important features




In the pH and mV measurement function:


In the conductivity measurement function:


Other features:


The standard set includes: ECF-1 conductivity sensor, CT2S-121 temperature sensor with Pt-1000S 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

pH fucntion
Function pH Redox/mV Temperature
Range -6.000 ÷ 20.000 pH ±2000.0 mV -50.0 ÷ 200.0 °C
Accuracy
(±1digit)
±0.005 pH* ±0.2 mV* ±0.1 °C**
Temperature compensation -5 ÷ 110 °C - -
Input impedance >1012Ω >1012Ω -


Conductivity function
Function Conductivity Salinity Resistivity Temperature
Range 0 ÷ 1000 mS/cm NaCl 0 ÷ 296 g/l
KCl 0 ÷ 239 g/l
0.500 Ωcm ÷ 200 MΩcm -50.0 ÷ 200.0 °C
Accuracy (± 1 digit) up to 19.999 mS/cm ±0.20 %*,
above 20.00 mS/cm: ±0.35 %*
±2.00 %* ±2 % of the measured value* ±0.1 °C**
Temp. compensation -5 ÷ 70 °C -5 ÷ 70 °C -5 ÷ 70 °C -
α coefficient 0.00 ÷ 10.00 %/°C 0.00 ÷ 10.00 %/°C 0.00 ÷ 10.00 %/°C -
K constant 0.010 ÷ 20.000 cm -1 - - -


Other data
Power Power adapter 5V 1000mA
Dimensions (mm) L = 175, W = 140, H = 52
Weight 420 g
* 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-1000S resistor: ±0.27 °C.