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E-mail
lixinghua@yunjingtianhe.com
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Phone
13276363035
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Address
Room 206, Building 1, Weifang High tech Zone Optoelectronic Industry Accelerator (Phase I), No. 155 Optical Circuit, Weifang High tech Zone, Shandong Province
Shandong Tianhe Environmental Technology Co., Ltd
Micro water quality monitoring station - providing long-term continuous data to support research on climate change, hydrological cycle, etc
Date: 2025-12-22Read: 1
Model recommendation: TH-WMSMThe manufacturer of meteorological environment monitoring instruments and equipment, Yunjing Tianhe supports customized services for merchants. You can rest assured that the equipment is selected from Shandong Yunjing Tianhe. The micro water quality monitoring station provides long-term continuous data and supports research on climate change, hydrological cycle, etc. The micro water quality monitoring station is an integrated and miniaturized water quality monitoring device that can monitor multiple key parameters of water bodies in real time and continuously, providing data support for water environment management, pollution prevention and control, and ecological protection. Micro water quality monitoring stations typically consist of the following modules: integrated sensors for temperature, pH, dissolved oxygen, turbidity, conductivity, ammonia nitrogen, total phosphorus, chlorophyll, etc., supporting multi parameter synchronous monitoring. Real time data is uploaded to cloud platforms or regulatory centers through wireless communication technologies such as 4G/5G, LoRa, NB IoT, etc. Adopting solar power supply or low-power design, supporting long-term field deployment and reducing manual maintenance frequency. Integrated design, with a protection level of IP65 or above, suitable for harsh outdoor environments such as waterproof, dustproof, and corrosion-resistant. Real time monitoring and early warning for 24-hour continuous monitoring of water quality changes, with data update frequency up to the minute level. Support custom threshold alarm, automatically triggering SMS, email or platform pop-up reminders when exceeding the standard, helping to quickly respond to pollution incidents.
1、 Product Introduction:
In response to the national strategic policy of strengthening environmental protection, maintaining the natural ecological balance, and promoting the sustainable development of the national economy, our company has independently developed and produced a small outdoor water quality automatic monitoring station according to the market needs. By combining the methods specified in the national standard with advanced computer technology, our company has realized the full automation of the measurement process, which can be widely used for surface water quality monitoring of Rivers and Lakes.
The main factors causing eutrophication of surface water are N, P, organic matter HN4-Due to chemical factors, monitoring chemical indicators such as total phosphorus, total nitrogen, ammonia nitrogen, chemical oxygen demand, and permanganate index in surface water has become a necessary task. Combined with conventional monitoring of five parameters (dissolved oxygen, turbidity, conductivity, temperature, pH), it comprehensively reflects water environmental indicators.
2、 Monitoring principle:
This outdoor water station adopts an integrated design principle, including a water collection and distribution system, a detection unit (five measurement modules for total phosphorus, total nitrogen, chemical oxygen demand, permanganate index, ammonia nitrogen, and conventional five parameters), a quality control unit, and auxiliary units (waste liquid collection, lightning protection, air conditioning, etc.). The core unit is the detection unit, which includes total phosphorus, total nitrogen, chemical oxygen demand, permanganate index, ammonia nitrogen, and chemical analysis methods strictly following national standards. The conventional five parameter indicators (dissolved oxygen, conductivity, turbidity, temperature, pH) are measured using a multi electrode integration method.
3、 Main specifications and standards:
According to the design documents, equipment, materials, and construction requirements, they must meet the current engineering construction standards and specifications of the People's Republic of China, as well as those of provinces, autonomous regions, municipalities directly under the central government, or industries. The technical standards and specifications followed in this project are as follows:
(1) Technical Specification for Monitoring Total Discharge of Water Pollutants
(2) Monitoring and Analysis Methods for Water and Wastewater (Fourth Edition)
(3) Environmental Water Quality Monitoring Quality Assurance Manual
(4) Technical Specifications for Monitoring Surface Water and Wastewater (HJ/T91-2002)
(5) Guidelines for Water Quality River Sampling Techniques (HJ/T52-1999)
(6) Technical Requirements for Chemical Oxygen Demand Water Quality Automatic Analyzer (HJ/T377-2007)
(7) Technical Requirements for Permanganate Index Water Quality Automatic Analyzer (HJ/T100-2003)
(8) Technical Requirements for Ammonia Nitrogen Water Quality Automatic Analyzer (HJ/T101-2003)
(9) Technical Requirements for Total Nitrogen Water Quality Automatic Analyzer (HJ/T 102-2003)
(10) Technical Requirements for Total Phosphorus Water Quality Automatic Analyzer (HJ/T 103-2003)
(11) Technical Requirements for pH Water Quality Automatic Analyzer (HJ/T96-2003)
(12) Technical Requirements for Conductivity Water Quality Automatic Analyzer (HJ/T97-2003)
(13) Technical Requirements for Turbidity Water Quality Automatic Analyzer (HJ/T98-2003)
(14) Technical Requirements for Dissolved Oxygen (DO) Water Quality Automatic Analyzer (HJ/T99-2003)
(15) Relevant national and industry standards and specifications
(16) Environmental Protection Industry Standards of the People's Republic of China (HJ/T98-2003)
(17) Design Code for Lightning Protection of Buildings
(18) Design Specification for Power Supply and Distribution System
4、 Product features:
1. Adopting an integrated automatic water quality monitoring station, which can simultaneously measure multiple elements;
2. Multiple analysis and detection units with low detection limits, meeting the requirements for online monitoring of surface water;
3. The water collection and distribution unit has the functions of water sample pretreatment and backwashing, with low failure rate and easy maintenance;
4. Optional UPS uninterruptible power supply to ensure that the water station completes the cleaning process in the event of a power outage;
5. Optional video surveillance equipment with real-time remote monitoring function to achieve monitoring;
6. Small footprint, with a total machine footprint of ≤ 2m2；
7. Equipped with waste liquid separation and collection units,
8. Collect waste liquid for more than two weeks; Equipped with lightning protection units to ensure stable and reliable operation of the system;
9. Intelligent constant temperature system equipped with cabinet style air conditioning to ensure that the water station operates at the specified working temperature.
5、 Technical parameters of water station:
| project | Performance indicators of total phosphorus, ammonia nitrogen, total nitrogen, chemical oxygen demand, permanganate index parameters | ||||
| Total Phosphorus | ammonia nitrogen | Total Nitrogen | Chemical Oxygen Demand | Permanganate index | |
| reference standard | GB11893-89 | HJ/536-2009 | HJ 636-2012 | HJ828-2017 | GB11892-89 |
| measurement range | 0.02~2 mg/L (expandable) | 0.1~5mg/L (expandable) | 0.1~10mg/L (expandable) | 15~2000mg/L (expandable) | 0.5~20mg/L (expandable) |
| detection limit | ≦0.01mg/L | ≦0.10mg/L | ≦0.1mg/L | ≦15mg/L | ≦0.1mg/L |
| drift | ±5% | ±5% | ±5% | ±5% | ≦0.5mg/L |
| precision | ≤5% | ≤5% | ≤5% | ≤5% | ±5% |
| indication error | ±5% | ±5% | ±5% | ±5% | ≤5% |
| Voltage influence | ±10% | ±5% | ±10% | ±5% | ±5% |
| temperature effect | ±5% | ±5% | ±5% | ±5% | ±5% |
| consistency | ≥90% | ≥90% | ≥90% | ≥90% | ±5% |
| sampling period | Time interval (adjustable from 20 to 9999 minutes) and hourly measurement mode | ||||
| calibration cycle | Adjustable at any interval and time from 1 to 99 days | ||||
| maintenance cycle | Usually once a month, about 60 minutes each time | ||||
Conventional five parameter technical indicators:
| Five parameter performance indicators | |||||
| measurement method | pH | dissolved oxygen | conductivity | turbidity | temperature |
| Glass electrode method | Fluorescence quenching method | Four wire electrode method | 90 degree scattered light method | Thermal resistance electrode method | |
| reference standard | GB/T6920-86 | GB/T11913-89 | GB/T6908-201 | GB/T13200-91 | GB/T13195-91 |
| measurement range | 0~14 | 0mg/L～ 20mg/L | 0ms/m～ 500ms/m | 0NTU～1000NTU | 0～50℃ |
| drift | ±0.1pH | ±0.3mg/L | ±1% | ±5% | —— |
| precision | ≤0.1pH | ≤5% | ≤1% | ≤5% | —— |
| indication error | ±0.1pH | ≤5% | ±1% | ±5% | —— |
| Voltage influence | ±0.1pH | ≤0.3mg/L | ±1% | ±5% | —— |
| Temperature compensation accuracy | ±0.1pH | ±0.3mg/L | ±1% | —— | —— |
| Water temperature error | —— | —— | —— | —— | ±0.2℃ |
| calibration cycle | Usually twice a month | ||||
| maintenance cycle | Usually once a month, about 30 minutes each time |
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| indication error | ±0.1pH | ≤5% | ±1% | ±5% | —— |
| Voltage influence | ±0.1pH | ≤0.3mg/L | ±1% | ±5% | —— |
| Temperature compensation accuracy | ±0.1pH | ±0.3mg/L | ±1% | —— | —— |
| Water temperature error | —— | —— | —— | —— | ±0.2℃ |
| calibration cycle | Usually twice a month | ||||
| maintenance cycle | Usually once a month, about 30 minutes each time | ||||
| Overall Machine Parameters | |
| control unit | ARM9 Embedded Industrial Control System |
| display unit | 15 inch color touchscreen control |
| Temperature Control System | Equipped with dual-purpose air conditioning for both cooling and heating |
| UPS stabilized power supply (optional) | Optional UPS uninterruptible power supply can be used to complete the measurement and cleaning process in case of sudden power outage |
| Lightning protection unit | Capable of lightning protection |
| Power requirements | AC 220 V±22 V，50 Hz±0.5 Hz |
| communication interface | 2 RS485 channels, supporting 4G wireless transmission |
| Total machine power | ≤ 2500W (including external pump, air conditioning power/working power) |
| ambient temperature | （5~40）℃ |
| Overall dimensions | Height 1900mm x Width 1480mm x Depth 960mm |
| Water station weight | 300kg |
6、 Configuration List
| serial number | Product Name | quantity |
| 1 | Stainless steel outdoor cabinet (including air conditioning) | 1 set |
| 2 | Electrical unit (PLC, relay, air switch, switch power supply, lightning protection) | 1 unit |
| 3 | Display unit (including 15 inch large screen and microcomputer control program) | 1 set |
| 4 | Water collection unit (pipe, sampling pump, float) | 1 set |
| 5 | Water distribution unit (electric ball valve, pipe) | 1 set |
| 6 | Preprocessing unit (flow tank, liquid level sensor, pressure sensor) | 1 set |
| 7 | Permanganate index | 1 unit |
| 8 | COD online monitoring instrument (optional) | 1 unit |
| 9 | NH3N online monitoring device | 1 unit |
| 10 | TP online monitoring device | 1 unit |
| 11 | TN online monitoring device | 1 unit |
| 12 | Five parameters (dissolved oxygen, conductivity, turbidity, temperature, pH) | 1 unit |
| 13 | data acquisition instrument | 1 unit |
| 14 | Chemical reagents (240 times/month) complimentary | 1 setMachine parameters: |