
BA121S
Low-range Conductivity Interface ASICHigh-resolution low-conductivity measurement ASIC for purified-water and precision applications.
Learn More →Applications
Water temperature and mineral-content sensing for coffee machines, tea makers and connected beverage equipment.

Application approach
Water temperature and mineral-content sensing for coffee machines, tea makers and connected beverage equipment.
Measurement points
Implementation
Products
Final selection depends on parameters, installation and validation.

High-resolution low-conductivity measurement ASIC for purified-water and precision applications.
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Single-channel, two-probe interface ASIC with NTC compensation and UART digital output.
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Durable stainless-steel temperature probe for long-term hot-water and appliance integration.
Learn More →Insights
From sensor integration, cross-interference correction, calibration validation to field operation SOP, this article analyzes the engineering decisions behind the nine parameters of Water Detective 4, helping technical and sales teams understand its capability boundaries and avoid misusing it as a universal tester.
Read Article →Remind buyers to pay attention to on-site installation, maintenance frequency, calibration requirements, interface compatibility, supplier response, and real water sample verification to identify water quality sensor solutions with impressive parameters but difficult implementation.
Read Article →Dealers are often asked by customers: "I already have a TDS pen, why should I buy Water Detective 4?" The answer isn't an extra screen, but the complementary matrix formed by nine screening parameters. This article starts from the measurement limits of TDS pens, breaks down the combined value of TOC, COD, UV254, TDS, EC, turbidity, hardness, salinity, and temperature, and provides actionable demo scripts, selection methods, field precautions, and validation approaches to help dealers reposition Water Detective 4 from "just another pen" to a portable rapid-screening workstation.
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