WATERPROOF pH / REDOX / CONDUCTIVITY / SALINITY METER CRC-461


The most important features



Detailed description


CRC-461 belongs to the newest generation of meters.

Characteristic features:



In the pH and mV measurement function:


In the conductivity measurement function:


In the temperature measurement function:


Other features:


The meter is sold with the temperature sensor CT2S-121, EPS-1 pH electrode for clean water, ECF-1 conductivity cell and redox (ORP) electrode ERS-2.
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
Function pH mV Conductivity /
salinity
Temperature
Range -2.000 ÷ 16.000 pH ±2000.0 mV 0 ÷ 2000.0 mS/cm
(autorange) /
0 ÷ 296 g/l NaCl
0 ÷ 239 g/l KCl
-50.0 ÷ 200.0 °C
Accuracy
(± 1 digit)
±0.002 pH* ±0.1 mV* up to 19.99 mS/cm ±0.1 %*
from 20.00 mS/cm: ±0.25 %* /
salinity 2 %*
±0.1 °C**
Temperature compensation -5 ÷ 110 °C - -5 ÷ 70 °C -
Input impedance >1012Ω >1012Ω - -
α coefficient - - 0.00 ÷ 10.00 %/°C -
Constant K - - 0.010 ÷ 20.000 cm-1 -
Resistivity range: 0.500 Ωcm ÷ 200 MΩcm, accuracy ±2% of measured value*
Temperature sensor Pt-1000S
Power 2x AA 1,2 V rechargeable battery, power adapter USB 5 V / 1000 mA
Weight 255 g
Dimensions (mm) L = 149, W = 52, H = 22
* Accuracy of the meter.
** Accuracy of the meter, overall accuracy is a sum of the meter and temperature sensor accuracy. In the range 0 ÷ 100 °C the acceptable error of the used sensor with the Pt-1000S resistor is ± 0.27 °C.