Hunan Rika Electronic Tech Co., Ltd, a leading weather station and environmental sensor manufacturer for over 15 years, introduces the RK500-12 pH Sensor Series, advanced pH sensors designed for accuracy, stability, and long-term reliability across agriculture, aquaculture, wastewater treatment, chemical industry, printing and dyeing, papermaking, pharmaceuticals, electroplating, water conservancy, and environmental protection.

A Versatile and Reliable pH Measurement Solution

The RK500-12 pH Sensor measures pH values in liquids with simple operation and without requiring a professional calibration instrument. It supports continuous pH monitoring in conventional water, industrial water, seawater, nutrient solutions, river water, and industrial wastewater.

It operates within a pH range of 0–14, with 0.01 pH resolution, ±0.01 pH accuracy, and a response time of 8–10 seconds (98% in flowing liquid, depending on model). The sensor features thermal resistance temperature compensation, a power supply range of 7–30 VDC (< 0.15 W), and dual output formats (RS485 & 4–20 mA) within a fully IP68-rated waterproof housing.

The RK500-12 pH Sensor features a low-impedance sensitive glass film that ensures precise measurements, with built-in temperature compensation for enhanced thermal stability. The electrode is not easily hydrolyzed, effectively eliminating alkali errors, while the internal signal isolation provides strong anti-interference performance.

Designed for wide power compatibility from 7–30 VDC, the sensor offers low drift, compact size, and fast response speed. Its stable performance, long service life, and easy electrode replacement make it a reliable and user-friendly solution for continuous pH monitoring in demanding environments.

Model Differentiation for Every Environment

All RK500-12 models integrate thermal resistance temperature compensation and support RS485 & 4–20 mA output, ensuring seamless integration with industrial monitoring systems.

pH Scale (Reference)

Electrode Maintenance

When not in use, the probe should be soaked in 3 mol/L KCl or saturated KCl solution. Do not immerse the electrode in distilled, deionized, or very low-ion tap water.

• If contaminated with inorganic substances: clean with 0.1 mol/L HCl or NaOH for several minutes, then rinse with distilled water.

• If contaminated with organic matter: clean with alcohol or acetone, then rinse with distilled water.

• Depending on the work environment, clean the electrodes with tap water every 3 – 6 months. (Remove the protective cap before use.)

Installation & Fixing

Installation options include immersion, sidewall mounting, top mounting, pipe installation, top-plug installation, and flow-channel installation, with an optional installation bracket (length = 1 m) and NPT 3/4 installation thread.

Precautions: Keep the probe above sediment level and perform regular cleaning for recessed installations to prevent fouling or deposits. Avoid non-uniform or variable insertion depths, as they affect measurement accuracy.

Accessories & Sheath

• M8 connector for B1, B2, B3

• M16 waterproof connector for D1, D2, D3

• Optional 316 L sheath for B1, B2, B3

• Thread adapters: N34 (PG13.5 internal / NPT 3/4 external), G34 (PG13.5 internal / G3/4 external), K50 (PG13.5 internal / 50.5 chuck)

For more information, visit: https://www.rikasensor.com/ph-sensor.html

Address: Room 304, Unit 2, Building 10, Phase 4, International Enterprise Center, No. 268 Xinxing Road, Yuhua District, Changsha City.

About Rika Sensor

Hunan Rika Electronic Tech Co., Ltd is a leading weather station manufacturer for over 15 years, specializing in weather sensors and environmental sensors and providing aquaculture, weather, and environmental monitoring solutions.

To learn more visit https://www.rikasensor.com/

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Media Contact
Company Name: Hunan Rika Electronic Tech Co., Ltd.
Email: Send Email
City: Changsha City
State: Hunan
Country: China
Website: www.rikasensor.com