Glass pH sensor DPH-500B

waterwastewaterprocess water

Product Overview
The pH is a digital pH sensor with an RS485 communication interface and the standard Modbus protocol. Stainless steel corrosion resistant shell, IP68 protection grade, built-in PT1000 thermistor and compensation algorithm, with high precision, long life, small drift and other advantages, suitable for all kinds of harsh working environment. The product is widely used in surface water, waterworks, aquaculture, municipal sewage, industrial wastewater, sewage treatment, industrial process and other fields of pH monitoring

Key Features

• Built-in PT-1000 temperature-sensitive resistor enables effective temperature compensation, ensuring measurement accuracy under varying temperature conditions.
• Replaceable electrode core design reduces operation and maintenance costs significantly.
• Industrial-grade composite pH electrode, specifically engineered for reliable performance in harsh working environments.
• Corrosion-resistant housing with IP68 waterproof rating, supporting long-term underwater operation.
• Equipped with RS485 communication interface and standard Modbus protocol for seamless system integration.
• Standard digital signal output allows direct integration and networking with other equipment without the need for an additional controller.
• Built-in self-diagnosis function ensures the reliability and accuracy of measured data.
• Digital sensor technology delivers high anti-interference capability and extended transmission distance.
• Plug-and-play sensor design facilitates quick and hassle-free installation.
• Features reverse polarity protection for the sensor power supply (positive/negative terminals).
• Provides protection against incorrect wiring (RS485 A/B terminals connected to power supply).
• Optional wireless data transmission module available for flexible remote monitoring.

Applications

• Environmental & Municipal Water: Surface water, waterworks, aquaculture, municipal sewage, and sewage treatment plants.
• Industrial Scenarios: Industrial wastewater monitoring, industrial process water control (e.g., chemical, pharmaceutical, food & beverage, and manufacturing industries).

Specifications
Specifications | Details
Main Material | Shell: 316L stainless steel + POM; Cable: PUR; Electrode: Glass core
Measuring Range | 0-14 pH
Resolution | 0.01 pH
Precision | ±0.1 pH
Repeatability | ±0.1 pH
Temperature range | -15~100℃
Temperature Resolution | 0.1 ℃
Temperature Accuracy | 0.5℃
Electrode voltage resistance | 0-0.1Mpa
Electrode temperature resistance | 0~45℃ (not freeze)
Power Supply | 9-36VDC
Maintain | Customers can directly replace pH electrode core on site to reduce maintenance costs
Cable connection protection | Power supply positive and negative connection, and communication positive and negative protection
Install The Screw | Top/bottom R3/4
Cable Length | Standard: 10 m, the maximum can be extended to 200m

Technical Characteristics

• Digital pH sensor with RS485 Modbus protocol
• IP68 waterproof rating
• Built-in PT1000 thermistor for temperature compensation
• Replaceable glass core electrode
• Corrosion-resistant 316L stainless steel shell
• Measuring range: 0-14 pH
• Resolution: 0.01 pH
• Precision: ±0.1 pH
• Temperature range: -15~100℃
• Power supply: 9-36VDC
• Standard cable length: 10m (extendable to 200m)