微型 TDS 测量模块

■ 简介
Compact TDS measurement module for integration with microcontrollers, offering reliable ppm readings for water quality projects, filtration systems, and IoT applications.
微型 TDS 测量模块可与单片机集成，提供可靠的 ppm 水质读值，适用于滤水系统、IoT 与各类水质监测项目。

■ 产品介绍
The TDS module works together with a TDS probe to provide real-time dissolved solids readings. It converts the probe’s conductivity signal into a standard analog or digital output that can be directly read by controllers like Arduino, ESP32, or Raspberry Pi. This is ideal for DIY, OEM, and IoT-based water monitoring systems.
TDS 模块与 TDS 探针搭配使用，可提供即时总溶解固体读值。模块会将探针的导电信号转换成标准模拟或数字输出，MCU（如 Arduino、ESP32、Raspberry Pi）即可直接读取。非常适合 DIY、OEM 与 IoT 相关的水质监测系统。

■ 主要特点与参数

1. Input: Compatible with standard TDS probes
   输入： 兼容一般 TDS 探针
2. Output: Analog voltage (0–2.3 V), I²C, or UART depending on model
   输出： 模拟电压（0–2.3 V）、I²C 或 UART（依型号而定）
3. Range: 0–1000 ppm (extendable to 9999 ppm with scaling)
   量测范围： 0–1000 ppm（可依比例扩展至 9999 ppm）
4. Accuracy: ±10 ppm with proper calibration
   精度： ±10 ppm（正确校正下）
5. Operating Voltage: 3.3V / 5V for full microcontroller compatibility
   工作电压： 3.3V / 5V，全面支持单片机
6. Temperature Compensation: Optional NTC/PT1000 integration
   温度补偿： 可集成 NTC/PT1000

■ 应用领域
• Arduino / Raspberry Pi 水质项目
• 水耕 / 鱼菜共生监测
• 智能饮水机、滤水器
• 教育与研究实验室
• IoT 环境监测设备

■ FAQ
Q: What’s the difference between a TDS probe and a TDS module?
A: The probe measures dissolved solids, while the module processes the signal into a readable output for controllers.
TDS 探针负责量测导电度，TDS 模块负责将信号转换成 MCU 可读取的输出。

Q: Do I need to calibrate the module?
A: Yes, calibration with standard solutions ensures accurate results.
需要，使用标准液校正可确保精准度。

Q: Can the module measure bacteria or chemicals?
A: No. Like all TDS devices, it only measures ionic conductivity. Neutral substances and pathogens are not detected.
不能。TDS 仅量测离子导电度，不侦测细菌、病毒或中性化学物质。

Q: Why does my pure RO water still show 1–2 ppm?
A: This is due to dissolved CO₂ in water, which is normal and harmless.
因为水中溶解 CO₂ 会造成 1–2 ppm，属正常现象，并非污染。