What functions does the portable conductivity meter have? 1. Conductivity measurement: Accurately measures the electrical conductivity of a solution, indicating the concentration of dissolved ions. 2. Temperature compensation: Automatically compensates for changes in temperature to ensure accurate conductivity readings. 3. Waterproof or splash-proof design: Designed to withstand exposure to water and moisture, making them suitable for field use. 4. Portable and compact: Lightweight and compact design for easy transport and use in various locations. 5. Battery-powered: Powered by batteries for convenient operation in remote or outdoor environments. 6. User-friendly interface: Intuitive interface with simple operation buttons or touchscreen functionality for