Ultrapure Water Ph Sensor

MTW-APH2528 Ultrapure Water pH Sensor is specially designed for pH measurement in ultrapure water, high-purity water and low-conductivity water environments.It adopts a unique high-resistance glass membrane and anti-static structure, effectively avoiding drift and unstable readings caused by low ionic strength.

This sensor ensures stable and accurate measurement even in ultra-low conductivity conditions, with built-in automatic temperature compensation.It supports standard RS485 MODBUS-RTU communication and optional 4–20mA analog output, compatible with industrial monitoring systems.

With IP68 waterproof and corrosion-resistant design, it is suitable for long-term online measurement in high-purity water systems.
It is widely used in ultrapure water, semiconductor water, pharmaceutical water, power plant boiler water and condensate water monitoring.

This ultrapure water ph sensor Adopts special hydrogen ion selective glass membrane for low conductivity medium.The unique liquid junction structure maintains stable potential in ultrapure water.High impedance signal acquisition + intelligent temperature correction,ensure accurate, stable and repeatable pH detection in ultra-pure water environment.

Low-impedance specialized pH glass membrane
1. Low-resistance glass formulation with membrane impedance <30–50 MΩ at 25°C
2. Fast response (<30 seconds) and stable signal even in ultra-low conductivity conditions

1. Built-in Pt100 or NTC temperature sensor for automatic temperature compensation (ATC)
2. Fully shielded cable and grounded design to eliminate static and electrical noise

Flow-type measurement requirements
1. Must be installed in a flow cell with stable flow rate (200–500 mL/min)
2. Avoids air bubbles and stagnant layers that cause unstable readings
3. Standard connections: PG13.5, 3/4" MNPT, etc.