pH meter Expert pH (professional kit)
pH meter Expert pH (professional kit). The Expert-рН pH meter is designed to measure pH (hydrogen index) and temperature of aqueous solutions. Can also be used to measure the EMF of electrode systems and redox potential (Eh). The device is used in chemical-technological, agrochemical, environmental and analytical laboratories of industrial enterprises, research institutions, control, inspection and supervision bodies for the analysis of natural, drinking and waste water, process solutions, aqueous extracts of samples of plant and food products, soils, etc. General laboratory pH/mV/°C meter for a wide range of applications with a combined glass electrode, stand and magnetic stirrer. The device is microprocessor-based, self-powered and equipped with a liquid crystal (LCD) graphic display for indicating readings. The device memory stores tables of the pH dependence of all basic buffer solutions on temperature. During calibration, the device measures the temperature of the solution and automatically corrects the pH value, which guarantees maximum accuracy of the results. Thus, calibration can be performed without a thermostat at any temperature. The device controls the temperature of the analyzed solution, compares it with the calibration temperature and independently selects the optimal measurement mode - with or without temperature compensation. The operating algorithm of the device provides for automatic clarification of the isopotential point of the electrode and its real sensitivity. This intelligent system guarantees correct results at any temperature. When the readings stabilize during measurements of pH, EMF and to, a symbol appears on the display. After it appears, the user can record the measurement result. Constant automatic control at all stages of the experiment and self-diagnosis protect the user from errors. The device makes adjustments on its own or informs the user about the problem. A powerful built-in battery ensures autonomous operation of the device for up to 1 month or more. The battery is charged from a 220V network using the included charger. The connecting cables of the primary transducers end with connectors that match the corresponding connectors on the measuring transducer. The device can be connected to a computer via a COM or USB port to view, save and print the results of pH, EMF and to measurements in graphical and tabular form. Features: displaying on the LCD display the EMF readings of the electrode system and the solution temperature simultaneously with the pH reading; automatic correction of pH values of buffer solutions depending on temperature during calibration; pH electrode calibration at 2, 3, 4 or 5 selected points with automatic entry of readings into the device’s memory; automatic switching on/off of temperature compensation mode; automatic monitoring of the temperature sensor connection status; automatic diagnostics of pH electrode sensitivity; saving calibrations and other parameters when the device is turned off; display of hints and messages in case of errors on the LCD display; transfer of information about measured parameters to a computer in the digital code of the RS 232 interface; compatibility with any types of pH electrodes, including combined Russian and foreign ones; possibility of connecting a magnetic stirrer powered from the device; Possibility of connecting to a PC and thermal printer. Scope of delivery: measuring transducer pH meter "Expert pH"; temperature sensor TDS-3; combined pH electrode ESK-10601/7 (pH 0...12, operating temperature 0...100°C); power unit; standard-titles; magnetic stirrer "RITHM"; tripod. Manba: https://www.nv-lab.ru/catalog_info.php?ID=5895
- Feature: Parameter
- Overall dimensions of the measuring transducer, mm: 205×105×65
- Transmitter weight: 0.70
- LCD display resolution, pixel: 133×64
- Automatic temperature compensation: Yes
- Battery/mains power supply: Yes
- Magnetic stirrer connection: Yes
- Connection to PC COM port: Yes
- Connection to PC USB port: yes, requires COM-USB adapter
- Connection of thermal printer: Yes
- Housing version: portable
- Hydrogen ion activity (pH) measurement range: 0 ... 14
- Limits of permissible basic absolute error of pH measurements (complete with electrode system): ± 0.05
- Limits of permissible absolute error of pH measurements when the temperature of the analyzed solution changes in the range from 5 to 80 ° C relative to temperature (25 ± 1), ° C (taking into account the additional error of automatic temperature compensation): ±0.07
- Temperature measurement range of the analyzed solution, °C: 0 ... 100
- Limits of permissible absolute error in measuring the temperature of the analyzed solution, °C: ±0.5
- EMF measurement range with a measuring transducer, mV: - 2000 ... + 2000
- Limits of permissible absolute error of EMF measurements with a measuring transducer, mV: ±1