Portable Bench pH & Conductivity Meter — TDS/Water Quality Tester P911 P913 P914 (Made in China)

Overview: Portable bench/table meter for pH, conductivity, TDS, salinity, resistivity and dissolved oxygen (DO). Built around a 5-inch LCD with a 150° viewing angle, the display remains readable from up to 5-meter distance. Electronics & Intelligent Functions: A built-in microprocessor chip provides intelligent features including automatic calibration, ATC, data storage, clock display, USB output, configurable function settings, automatic power-off and a low voltage alarm. Connectivity & Power: Two USB interfaces support PC connection, battery charging and data transfer. The unit uses a rechargeable battery that lasts up to 30 hours. The meter will auto power off after 10 minutes of inactivity. Electrodes & Data Handling: A 3.5mm electrode interface allows simple electrode hookup. The meter auto-recognizes different electrodes; electrodes fitted with a built-in chip will automatically store and retrieve their calibration data when connected. The instrument can save up to 300 sets of data, each including the reading plus date and time. pH Mode: Automatically recognizes 15 buffer solutions and offers three kinds of reference options: Europe & USA, NIST and China. Supports 1-, 2- and 3-point calibration. Conductivity Mode: Uses advanced conductivity measurement technology with a conductivity electrode (K=1). Measurement range meets accuracy requirements from 0.5S/cm ~ 200mS/cm. The meter can switch between conductivity, TDS, salinity and resistivity. Multinomial calculations for TDS and salinity are used to ensure precise full-scale conversions. Auto-recognition is available for 8 conductivity standard solutions with two kinds of reference options: Europe & USA and China. DO Mode: Features ATC plus manual salinity compensation and manual pressure compensation. Uses a polarographic DO electrode with a short polarization time (3-5 minutes).