Portable Table pH & Conductivity Bench Meter — Water Quality Tester P911 / P913 / P914 (P911_1)

Large 5-inch LCD with wide viewing angle: This bench/portable meter features a high-resolution 5-inch display and a 150° viewing angle so readings remain visible from up to 5 meters away. Intelligent microprocessor control: Built-in microprocessor delivers smart functions including automatic calibration, ATC (Automatic Temperature Compensation), data logging, clock display, USB output and configurable function settings. Power-saving features include automatic power-off and a low-voltage alarm. Dual USB and electrode connectivity: Two USB interfaces support PC connection for data transfer and battery charging. A 3.5 mm electrode connector provides secure sensor attachment and the instrument auto-recognizes different electrodes. Electrodes fitted with internal chips can automatically store and recall calibration data. Comprehensive data logging: Stores up to 300 sets of measurements with date and time for trend tracking and analysis. Multiple test modes and calibration options: pH mode offers automatic recognition of 15 buffer solutions and conforms to European & USA NIST standards while supporting Chinese 1, 2, 3-point calibration methods. Conductivity mode measures accurately across 0.5S/cm to 200mS/cm and can display conductivity, TDS, salinity or resistivity. DO features: Dissolved oxygen (DO) mode includes ATC, manual salinity compensation and uses a polarographic DO electrode with short polarization time for fast, reliable DO readings.