The portable pH meter CA 10101 from Chauvin Arnoux is a measuring instrument for determining the pH value, redox potential (ORP), and temperature in aqueous solutions. It is designed for use in laboratories as well as for outdoor applications and is particularly suitable for monitoring water quality in drinking water and standard solutions. The device features a robust, waterproof housing that meets protection class IP67, ensuring dust- and water-tight conditions even during short-term submersion. The construction is designed for mobile applications, with the connector also being sealed, even when no electrode is inserted.

Applications
This device is used in applications requiring precise determination of acid-base ratios, oxidation-reduction potentials, and temperature. These include monitoring of drinking water, aqueous standard solutions, and mobile field measurements. The pH measuring electrode XRGST1, included in the delivery scope, is specifically designed for these application areas and features an integrated temperature measurement system.

Functions and Equipment in Detail
The CA 10101 features a backlit, multi-line LCD display, enabling clear and easy reading of measurement values, even under poor lighting conditions. Operation is via a menu-guided system that supports an adjustable buffer list for calibration. Calibration can thus be individually adapted to the buffer solutions used. The display shows stable measurement values to facilitate accurate reading.

Technology Explained Simply
The device measures the pH value by detecting the potential difference between a measuring electrode (glass) and a reference electrode. This difference is converted into a pH value. The measuring electrode XRGST1 is a single-stem measuring chain that combines the measuring and reference electrodes in one housing, simplifying handling. The integrated gel reference system ensures a stable reference voltage and reduces maintenance frequency. Temperature measurement is performed via an integrated temperature sensor, which adjusts the measurement values correctly to the sample's temperature.

Compatibility and Accessories
The device is equipped with a pH measuring electrode XRGST1, suitable for standard solutions and drinking water. Additionally, various accessories such as adapters for DIN connectors, buffer solutions (e.g. pH 4.005, pH 7.00, pH 9.180), and a set of 3 beakers can be used to optimize measurement accuracy and workflow. The buffer solutions are COFRAC-certified and are used for calibrating the device. An adjustment kit for pH meters and conductivity meters is also available.

Mounting and Installation
Installation is performed by simply inserting the electrode into the device's connector. The electrode is equipped with a waterproof 8-pin DIN connector, ensuring a secure connection. The device is delivered in a transport case that provides space for sample beakers and buffer solutions. Connection to a PC is made via a USB cable, which is included in the delivery scope.

Operational Advantages
The device enables storage of over 100,000 measurement values with date and time, which can be stored manually or automatically. The data can be transferred to a PC via the USB cable, where they can be evaluated, displayed, and exported using the included software Data Logger Transfer. The software supports device configuration, reading of stored measurement data, and programming of recordings. The combination of robust design, high measurement accuracy, and comprehensive data processing makes the device a reliable solution for mobile and stationary measurement tasks.