ECH-604
ECH
Product Overview
ECH series of automatic intelligent control dosing device is designed and manufactured strictly in according to "JB293299-Water-treatment equipment technology conditions". Its purpose is to automatically control the operation of the dosing system through an online detection system, so that all water quality indicators of the water system are strictly controlled within the preset range, ultimately achieving both energy conservation and emission reduction and cost reduction.
This system has obtained a Chinese invention patent, and the patent number is 200510110131.6. The system can operate safely under various working conditions. The system uses online real-time detection to control the site in real time, including PLC controlling algorithm intelligently, computer or touch screen using centralized monitoring, setting, and human-machine friendly dialogue.
Technical Specifications
Custom configurations available upon request.
Model and type of System used | ECH-604: Automatic Dosing Device | ||
APG800-Metering Pump（Brand: SEKO）： | |||
pre-ssure[bar]：10；Flow rate[L/h]：10；Stroke flow rate [ml/stroke]：0.55； Innerdiameter/outer diameter of connecting pipe (mm]：4/6；maximun-frequency (Stroke/min]：300；po-wer[tile]：40：roughweight[kgl：4.4 | |||
Cycle volume range | 0-5000m3/h | 5000-20000m3/h | >20000m3/h |
Boiler evaporation | 0-10m3/h | 10-40m3/h | >40m3/h |
Dosing tank | 200L quantity: 2 material:PE | 500L quantity: 1/2/3 material: PE/SS304/SS316/Q235b | 1000L |
Overall size | 1200*700*2000 | 950*950*1800 | 2200*2200*1800 |
| Device power supply | single-phase-AC220V-0.5KW | three-phase-AC380V-2.5KW | three-phase-AC380V-3.0KW |
| Read-through protocol | standard: MODBUSRTU and dry contact output. If other communication protocols are required, please indicate when selecting. | ||
| Automatic blowdown valve | Connected with conductivity meter: Whether automatic blowdown is required please indicate when selecting. | ||
| System pressure/dosing Point back pressure | 0-1.6Mpa; When the injection point pressure or system pressure is greater than 1.6Mpa, it needs to be specified in the selection. | ||
| The type of chemicals added | corrosion and scale inhibitor, dispersing agent, scale inhibitor, corrosion inhibitor, oxidizing bactericide, non-oxidizing bactericide, pH regulator, deoxidizer, phosphate, flocculating agent, coagulant, disinfectant and so on. Note: The above types of chemicals can be selected according to the needs of the system and water quality. Corrosion and scale inhibitor and oxidizing bactericide are generally selected for the central air conditioning circulating water system. The selection type of each project is subject to the technical documents of our company. | ||
| Measured water quality parameters | pH, conductivity, corrosion, water supply/drainage flow, fouling heat resistance, adhesion rate, ORP, residual chlorine, turbidity, chemicals concentration (fluorescence tracing technology) and so on. Note: The above meters can be selected according to the need, and the selection type of each project is subject to the technical documents of our company | ||
RotaryDirect-ReadingRemoteWaterMeter
Technical Specifications
| Model | Bore DNmm | Q3/Q1 | Overloa dcurrent Q4（m3/h） | Common Traffic Q3（m3/h） | Boundary flow rate （m3 /h ） | Minim umflow （m3 /h ） | Least count | Full-scale reading |
| LX SG-EZ | 15 | 100 | 3.1 | 2.5 | 0.04 | 0.025 | 0.0001 | 9999 |
| LX SGR-EZ | 20 | 100 | 5.0 | 4.0 | 0.064 | 0.04 | 0.0001 | 9999 |
| LX SG-EZ | 25 | 100 | 7.9 | 6.3 | 0.1 | 0.063 | 0.0001 | 9999 |
| LX SGR-EZ | 32 | 100 | 12.5 | 10 | 0.16 | 0.1 | 0.0001 | 9999 |
| LX SG-EZ | 40 | 100 | 20 | 16 | 0.25 | 0.16 | 0.001 | 99999 |
| LX SGR-EZ | 50 | 100 | 31.3 | 25 | 0.4 | 0.25 | 0.001 | 99999 |
The maximum allowable error for high-flow range (Q2≤Q≤Q4) is ±2% when water temperature ranges from 0. 1°C to 30°C, and ±3% when water temperature exceeds 30°C. For low-flow range (Q1≤Q<Q2), the maximum allowable error is ±5%, regardless of water temperature range. service condition： Water temperature: The cold water meter shall not exceed 30°C (hot water shall not exceed 90°C) and shall not be lower than 0°C. Pressure: No more than 1 MPa.
Portable Multi-parameter Water Quality Analyzer
Instrument Introduction
This instrument is equipped with 16 optical channels and can measure more than 60 parameters. In addition, it measures pH, conductivity, TDS, salinity, dissolved oxygen and water temperature via the electrode method. Users can freely combine the measurement items according to their needs. The instrument features a built-in dual-temperature-control digester and a large-capacity lithium battery, making it suitable for on-site water quality testing in environments without a power supply. This product is widely used in scientific research, universities, sewage treatment, water environment monitoring, enterprise self-monitoring of wastewater, as well as testing of drinking water, surface water and groundwater.
Detection Parameters：
| NO. | Measurement Item | Measuring Range | Unit | Maximum Error |
| 1 | COD(Low Range (Chromium Method） | 5-200 Or 5-150 | mg/L | 5% |
| 2 | COD(High Range (Chromium Method)） | 200-2000 Or 150-2000 | mg/L | 5% |
| 3 | CODMn(Permanganate Index） | 0.00-10.00 | mg/L | 0.2 或 5% |
| 4 | PH（Electrode Method） | 0.00-14.00 | pH | ±0.05pH |
| 5 | Conductivity（Electrode Method） | 0.00µs/cm-199.9ms/cm | m(u)S/cm | ±1.0% (F.S) |
Core Advantages
It can monitor the concentration of chemicals online in real time. When the concentration of the chemicals is insufficient, it can be replenished to the designed concentration in time.
GPRS wireless remote monitoring can be realized. The relevant data of operation can be sent to the management personnel at the first time, and can also be uploaded to the mobile phone application.
The dosing pump can be switched between automatic control and manual control.
After the PH meter is added, the PH value of the circulating water is controlled within the set range.
After the conductivity meter is added, the conductivity value range can be set, the blowdown valve can be controlled to achieve automatic discharge, and the concentration multiple can be calculated.
After the turbidity meter is added, the turbidity of the circulating water can be detected online.
Application Fields
The device can be configured in different ways according to the actual situation of the system. They are suitable for almost all requirements of civil water treatment and industrial circulating water treatment, including but not limited to: air conditioning chilled water (hot water) system, air conditioning cooling water system, boiler water system, desalted water system, sewage (waste water) treatment system, water purification system, swimming pool water treatment system, reclaimed water reuse system and so on.
Usage Methods & Safety Precautions
Usage Methods
Installation & Commissioning：Install the device on a flat, firm foundation; connect pipelines, power supply, and water quality sensors correctly; set dosage, control parameters, and operating modes based on system water quality and treatment targets.
Solution Preparation：Add water treatment chemicals (scale inhibitors, corrosion inhibitors, biocides, etc.) into the dosing tank and dilute to the specified concentration; stir evenly to avoid sediment blockage.
Operation Mode：Start the automatic control mode; the system monitors water quality parameters (pH, conductivity, corrosion rate, etc.) and automatically adjusts dosing flow and frequency.For continuous operating systems, use continuous dosing; for intermittent systems, set timed dosing as needed.
Daily Maintenance：Regularly check liquid level in the dosing tank, clean the pump head and pipeline filters, calibrate monitoring instruments, and ensure stable operation.
Safety Precautions
Operators must follow chemical safety guidelines; wear protective gloves, goggles, and clothing when handling chemicals.
Avoid direct contact between chemicals and skin/eyes; rinse with plenty of clean water for at least 15 minutes and seek medical help if contacted.
Store chemicals in cool, dry, ventilated areas away from heat, open flames, and incompatible substances.
Regularly inspect pipelines and joints for leakage; repair immediately to prevent environmental pollution or equipment damage.
Keep the device out of reach of unauthorized personnel and children; do not disassemble the control cabinet or electrical parts without permission.
FAQ
What chemicals can this automatic dosing device handle?
It can accurately and stably dose scale inhibitors, corrosion inhibitors, biocides, pH adjusters, flocculants, and other standard water treatment chemicals used in HVAC, boilers, industrial circulating water, and sewage treatment systems.
Is the dosing system fully automatic?
Yes. The system supports fully automatic operation based on real‑time water quality monitoring and preset parameters. It also provides manual control mode for on‑site commissioning and emergency adjustment.
Can the equipment be customized?
Absolutely. We provide customized solutions including dosing tank capacity/material, pump flow/pressure, control functions, monitoring meters, and overall dimensions to match your system parameters and on‑site conditions.
Are you a manufacturer or a trading company?
We are a professional manufacturer with independent R&D, production, and sales capabilities for water treatment equipment and chemicals. We offer stable product quality, on‑time delivery, and professional after‑sales technical support.
How to choose the right model for my water system?
Provide your system type (open/closed circulating water, boiler, etc.), cycle volume/evaporation rate, water quality parameters, and required dosing function; our technical team will recommend the optimal model and configuration.
What regular maintenance does the device need?
Regularly replenish dosing solution, clean filters and pump heads, calibrate sensors, check pipeline tightness, and maintain the control cabinet to ensure long‑term stable performance.
