Online Digital RS485 Modbus Water Quality Analyzer Dissolved Oxygen Detector Do Sensor

• Customization: Available
• After-sales Service: Yes
• Warranty: 3 Years
• Model NO.: SQ800-01DO
• Display: Digital
• Appliance: Water
• Portable: Non Portable
• Certification: RoHS, CE
• Type: Do
• Function 1: Water Quality Monitoring
• Funciton 2: Wastewater Treatment
• Function 3: Wireless Water Quality Detector
• 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

Dissolved Oxygen Sensor for Wastewater Treatment

What's this product?   

      The On-line dissolved oxygen analyzer system comprises a master controller and a fluorescence-based DO sensor. The sensor outputs RS-485 digital signals with stronger anti-interference ability. The mainframe provides multiple interface options including Analog outputs, Digital outputs and Discrete outputs.

Operation principle

     The blue light emitted by the LED irradiates the fluorescent coating on the inner surface of the sensor cap, exciting the fluorophores which sub sequently emit red light through radiative decay. A photodiode array detects either the fluorescence intensity (FI) or measures the fluorescence lifetime (τ) corresponding to the return of fluorophores to their ground state. The higher the concentration of oxygen, the weaker the red light emitted by the sensor, and the shorter the time required for the phase fluorescent material to return to the ground state.

Features

1. Integrated design with EMI-resistant capabilities;

2. Industrial-grade online oxygen sensing electrode for long-term stable operation

3. Built-in temperature sensor with real-time compensation

4. Supports salinity and barometric pressure compensation;

5. Stainless steel housing, IP68 waterproof rating, suitable for diverse operating conditions

6. RS485 signal output with standard Modbus protocol for seamless integration and 

Technical Specification

(Custom configurations available upon request.)

Model No.	SQ800-01DO	Temperature compensation accuracy	±0.3mg/L
Measurement parameter	DO,Temperature	Voltage	DC12V-DC24V
Measurement range	DO:(0-20)mg/L or (0-200)%,Temperature:(0-60)℃	Communication mode	RS485 (Modbus RTU)
Measurement accuracy	±0.3mg/L	Protection rating	IP68
Resolution	0.01mg/L	Extension cable	5m

Company Profile

Application

Certifications

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.