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2. THE CHARACTERISTICS OF THE METER
The multifunction meter CX-401 belongs to the newest generation of measuring
devices which offer wide range of additional functions. The meter ensures high
accuracy and repeatability of the readings. Two kinds of power source: battery
and power adapter enable work in field and long-lasting measurements in the
laboratory. The newest generation electronic elements used in the meter made
it’s memory independent to power supply and have ensured very low power
consumption what greatly increases the operation time on 1 battery. The meter
is equipped with large custom LCD display, which enables simultaneous
observing of the measured function, temperature value and additional symbols
which make working easier. Waterproof housing makes working in difficult
conditions possible. Small size and weight make the meter very handy
especially during the field work.
Main features of the CX-401 are:
- high accuracy and stability of the reading;
- automatic and manual temperature compensation;
- pH electrode calibration in 1 to 5 points;
- automatic recognition of pH buffers and standards;
- imposed values of standard solutions with possibility of changing their value;
- option of automatic introduction of temperature correction on the value of pH
buffer solutions (NIST norm);
- information about the condition of the pH electrode;
- storing of three characteristics of electrodes in each function;
- wide range of conductivity measurement with 6 automatically switched
subranges (autorange);
- counting the conductivity to salinity in NaCl or KCl according to real
dependence to conductivity;
- possibility of introducing the TDS coefficient;
- calibration of the conductivity cell by introducing the constant K or on sample
solutions;
- function of determining the constant K of cell;
- automatic compensation of the salinity influence on the oxygen
measurement using the conductivity measurement function;
- measurement and automatic compensation of the atmospheric pressure
influence on the dissolved oxygen concentration;
- internal datalogger for 200 measurements with time date and temperature;
- taking series of measurements with set time interval;
- RS-232 output
- possibility of printing the measurement results or values stored in the
memory on standard printer with use of interface;
- Information about the battery condition;
- automatic switch off function after time set by the user;
