RS485 Modbus Glass Electrode Water Quality Monitor Sensor pH for Wastewater Treatment

• Customization: Available
• After-sales Service: Yes
• Warranty: 3 Years
• Model NO.: SQ800-01pH
• Display: Digital
• Appliance: Wastewater Treatment
• Portable: Non Portable
• Certification: RoHS, CE
• Type: PH Meter
• Function 1: Water Quality Monitor
• Funciton 2: pH Wastewater Treatment
• Function 3: Wireless pH Monitoring
• Function 4: Water Quality Sensor
• Transport Package: Carton Box
• Specification: 20*14*8
• Origin: China
• HS Code: 9032890000
• Production Capacity: 1000PCS/Month
• Package Size: 25.00cm * 25.00cm * 15.00cm
• Package Gross Weight: 3.000kg
• Lead Time: 7 days (1 - 10 Pieces) ; To be negotiated ( > 10 Pieces)

Product Description

PH Sensor for Wastewater Treatment

What's this product?   

      The PH Sensor is a digital sensor featuring an easy-to-integrate RS485 communication interface and standard Modbus protocol, It is equipped with a corrosion-resistant housing, IP68 protection rating, suitable for operation in various harsh working environments;

Select an industrial-grade combination electrode with a double-junction reference electrode design for prolonged service life;   

Equipped with a built-in PT1000 temperature sensor and compensation algorithm, achieving an accuracy of ±0.1℃;

Operation principle

       The glass electrode method for measuring the pH of water samples uses a saturated calomel electrode (SCE) as the reference electrode and a glass electrode as the indicator electrode. These electrodes form an electrochemical cell with the water sample, and the electromotive force (EMF) of the cell is measured by a pH meter, which directly displays the pH value. This method is accurate, rapid, and minimally affected by interference from factors such as water color, turbidity, colloidal substances, oxidants, reductants, and salinity.

Features

1. Signal Output: RS-485 (Modbus/RTU protocol). Facilitates seamless integration with third-party devices such as PLC, DCS, industrial PC, universal controllers, paperless recorders, or touchscreen;

2. Dual high-impedance differential amplifier, offering strong anti-interference capability and high-speed response;

3. The company holds a patented pH electrode technology, where the internal reference solution permeates extremely slowly through the microporous salt bridge under a pressure of at least 100 kPa (1 bar), with continuous efflux sustained for over 20 months;

4. Easy Installation: 3/4 NPT (National Pipe Thread) pipe threads enable submersible mounting or integration into pipelines and tanks;

5. IP68 protection class;    

Installation

The sensor can't installed upside down or horizontally; it should be mounted at an angle of at least 15 degrees

Technical Specification

(Custom configurations available upon request.)

Model No.	SQ800-01pH	Temperature resolution	0.1 ℃
Measurement parameter	PH	Temperature accuracy	0.5 ℃
Measurement range	0-14PH	Voltage	DC12V-DC24V
Measurement accuracy	±0.1PH	Communication mode	RS485(Modbus RTU)
Resolution	0.01PH	Protection rating	IP68
Temperature Compensation	Manual/Automatic	Extension cable	5m

Company Profile

Who we are

ShenZhen StarWSN is a professional liquid level and water quality monitoring device company which established in 2016. We focusing on the application of smart sensing technology in drainage network and river level monitoring. The main product include wireless water level detector,wireless pressure sensor,river flow monitoring station and online water quality analyzer etc. The products are widely used in smart city, environmental protection, municipal, chemical, power, sewage treatment, 
emergency rescue and other fields.   
                                                           
The company fully implements the ISO9001 quality management system,passed over 20 types of reliability tests and certifications. With leading research and development capabilities for software and hardware. Committed to providing high-quality products and "one-stop" services to all the customers.

Packaging & Shipping

FAQ

Q: What's the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized order?
A: Absolutely! We offer OEM and ODM service.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.