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Evie Huang sales consultant
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Email: Sales@matictest.com
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Phone/WhatsApp: +86 18996117830
Online Full-Spectrum Multi-Parameter Water Quality Sensor | MT-GP-808
A reagent-free full-spectrum UV-Vis sensor measuring COD, BOD, TOC, turbidity, colour, nitrate, TP and TN in one probe. Digital RS-485 Modbus RTU output, automatic turbidity compensation, low power and maintenance-free operation.
Description
Product Overview
The MT-GP-808 online full-spectrum multi-parameter sensor uses UV-Vis full-spectrum absorption technology to determine multiple water quality parameters from a single optical measurement. Because the method is purely optical, no chemical reagents are consumed — there is no secondary pollution, no reagent cost and no reagent replacement visits.
A single probe reports COD, BOD, TOC, colour, turbidity, total phosphorus, total nitrogen, ammonia nitrogen, nitrate and nitrite. Built-in turbidity compensation corrects the influence of suspended solids on the optical reading, keeping results accurate in turbid natural waters.
Key Features
- Multi-parameter measurement in one probe: COD, BOD, TOC, colour, turbidity, TP, TN, NH3-N, nitrate and nitrite.
- Full-spectrum UV-Vis system: Captures the complete absorption spectrum rather than discrete wavelengths, improving robustness.
- Low drift, fast response: Minimal drift with rapid response for more accurate measurement.
- Excellent long-term stability: Maintains stability even under continuous long-term monitoring.
- Maintenance-free and reagent-free: No reagents, no consumables, low lifetime operating cost.
- Digital output: RS-485 interface with Modbus RTU protocol.
- Low power with anti-interference design: Suitable for long-term field deployment.
- Automatic turbidity compensation: Compensates for suspended-solid interference automatically.
- Easy installation: Simple mounting supports uninterrupted online monitoring.
- Environmentally clean: No reagents means no chemical discharge.
Monitored Parameters
| Parameter | Description |
|---|---|
| COD | Chemical Oxygen Demand |
| BOD | Biochemical Oxygen Demand |
| TOC | Total Organic Carbon |
| Turbidity | Suspended particle concentration |
| Colour | True colour of the water body |
| TP / TN | Total Phosphorus / Total Nitrogen |
| NH3-N | Ammonia Nitrogen |
| Nitrate / Nitrite | Nitrogen species |
Technical Specifications
| Item | Specification |
|---|---|
| Model | MT-GP-808 |
| Measurement principle | UV-Vis full-spectrum absorption |
| Output | RS-485, Modbus RTU |
| Calibration method | Factory calibrated, field verification supported |
| Reagent requirement | None — reagent-free |
| Turbidity compensation | Automatic |
| Power consumption | Low-power design |
| Installation | In-situ, continuous online monitoring |
Applications
- Industrial parks
- Environmental monitoring
- Scientific research and education
- Aquaculture
- Wastewater treatment
- Smart water utilities
Frequently Asked Questions
Does the MT-GP-808 require chemical reagents?
No. Measurement is purely optical using UV-Vis full-spectrum absorption, so no reagents are consumed. This removes reagent cost, eliminates chemical waste and greatly reduces site visits.
How does it handle turbid water?
The sensor automatically compensates for turbidity interference, correcting the influence of suspended solids on the optical signal.
Can it really replace several separate analysers?
For many applications, yes. A single MT-GP-808 probe reports COD, BOD, TOC, colour, turbidity, TP, TN, NH3-N, nitrate and nitrite, which would otherwise require multiple wet-chemistry analysers.
What output protocol does it use?
It is a digital sensor with an RS-485 interface running the Modbus RTU protocol, allowing direct connection to data loggers, PLCs, telemetry terminals or cloud platforms.
How stable is it over long deployments?
The sensor is designed for low drift and excellent long-term stability, maintaining accuracy during continuous unattended monitoring.







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