Water quality monitoring device supports RS485/Modbus RTU sensor and 4–20 mA, 4G connection via HTTP/HTTPS, MQTT, FTP. Data is saved locally for 100 days, automatically transmitted when restoring connection. The device warns of exceeding Min/Max thresholds, sensor errors via application, SMS, calls and contacts. The system integrates an independent HMI, establishes maintenance schedules, forwards data between devices, supports retrieval and configuration according to centralized monitoring data management requirements.
Water quality station monitoring device
Products
Water quality station monitoring device
WATER QUALITY MONITORING EQUIPMENT – DTG.304
DTG.304 is a water quality monitoring device developed by MEI GROUP, integrating the functions of sensor data collection, on-site storage, data transmission via 4G and automatic warning. Equipment suitable for installation at water quality monitoring stations, water plants and water supply systems.
Sealed design, protects equipment
The device casing is designed to be sealed, incorporating sealed connectors to help limit moisture and prevent insects from entering when properly installed and sealed. Connectors support convenient connection, disassembly and maintenance in the field.
RS485 and 4–20 mA input
Sensor support RS485/Modbus RTU and 4–20 mA, collect parameters of pH, turbidity, residual chlorine, conductivity, TDS, temperature and other indicators depending on the connected sensor. Allows setting scale, unit and reading cycle for each channel.
Transmit data over 4G
Support HTTP/HTTPS, MQTT and FTP, transmit data to monitoring software, SCADA system or customer server according to agreed protocol and format.
Store data and automatically transmit compensation
Save data locally in 100 days according to configuration of parameters and recording cycles. When the network is lost, the device continues to record data as long as it is powered and automatically transmits compensation when the connection is restored, preserving the measurement time of each recording.
Warning over threshold and sensor error
Allows setting thresholds Min/Max For each parameter, detect sensor connection loss or abnormal signal. Supports alerts via app, SMS, calls and relay contacts according to configuration. SMS and call functions depend on modem, SIM and network service.
Connect the HMI screen at the station
Equipped with a separate communication channel with HMI screen, supporting display of measurement values, sensor status, network connection and warnings. Allows local operating parameters to be set according to deployment configuration.
Remote monitoring and configuration
Through integrated software, the device supports data monitoring, changing measurement and transmission cycles, setting alarm thresholds, relay control and remote firmware updates according to the equipped configuration.
TECHNICAL SPECIFICATIONS
Category | Characteristics | Technical specifications |
|---|---|---|
Processor | Microcontroller | STM32F407 |
Analog input | Channel number | 4 channels |
| Input signal | 4–20 mA |
| Resolution | 16 bit |
Relay output | Channel number | 4 channels |
| Output type | Relay contact |
Integrated sensor | Measuring quantity | Temperature and humidity inside the device |
| Channel number | 1 channel for measuring temperature and humidity |
Wired communication | RS485 | 2 channels |
| RS485 protocol | Modbus RTU |
| HMI screen interface | 1 independent channel |
Mobile communications | Module | SIMCom SIM7600 Series |
| Connectivity technology | 4G |
| Data transmission protocol | HTTP, HTTPS, MQTT, FTP |
Memory and storage | Flash Memory | 16 MB |
| EEPROM memory | 256 KB |
| Expandable memory card | Supports 32GB SD card |
Real time | Integrated clock | RTC |
Power supply | Nominal voltage | 12 VDC |
| Compatible sources | AC/DC power supply, battery or battery suitable for input voltage |
Technical specifications are subject to change.
Products for the same solution
MLD IoT Gateway
IoT Gateway MLD device developed by MEI GROUP, supports LAN/4G LTE connection, data collection from RS485/Modbus RTU, Modbus TCP, LoRa and other industrial protocols. The device integrates W25Q128 memory or SD Card to store FIFO buffer, ensuring no data loss when connection is lost. Gateway supports SSL/TLS, remote OTA, incident warning and data synchronization to Cloud, SCADA or enterprise server, suitable for water supply, environment, agriculture and smart factories.
Morning Sync - DTG.910
MEI Data Logger is a monitoring device MEI GROUP developed, used for measuring rain, water level, flow, pressure, sluice gate opening and industrial sensors. Equipment used STM32F407, integrated RTC, connect 4G/LoRa, support realtime or save energy. Hardware available 2 RS485, 4 pulse channels, 3 channels 4-20mA, gate TTL, expand communication HMI. Data saved offline 60 days, automatically synchronizes when there is a network. The system also monitors battery, solar charging, cabinet temperature
Sensor Hub - DTG.902
Sensor Hub DTG.902 is an industrial data collector produced by MEI GROUP development, acting as a center for connecting and monitoring sensors 4–20 mA and RS485 Modbus RTU in IoT systems. Equipment used microcontroller STM32F407 High performance, integrated battery voltage and capacity monitoring function, together 01 Digital Output output to output warning or control signals. DTG.902 mode support works continuously or save energy, use source 12 VDC. Flash memory allows data to be saved 90 days
AQUAMONITOR - DTG.300
DTG.300 MEI is a smart industrial Data Logger specialized for monitoring flow, pressure, water level and field sensor signals. The device supports reading data via pulse, RS485 Modbus RTU and analog signals, stores data locally when connection is lost and automatically synchronizes to Web/App when the network restores. DTG.300 allows instant alerts via Web/App, SMS or calls, supports remote configuration and firmware updates. The solution is suitable for the water supply industry, pumping statio
PULSE COUNTER - DTG.1001
Industrial output counting equipment uses power 24 VDC, connection support Wi-Fi or LAN to monitor and manage data in real time via Web App. Designed equipment Sealed dust-proof cover, resistant to electromagnetic interference (EMC/EMI), suitable for operation in factory environments. Supports counting output from pulse signals or sensors, setting target output, statistics by shift, day, month and user authorization. The device integrates memory to store data when the connection is lost and auto
Remote Logger - DTG.901
4G MEI ECO pressure monitoring device Use microcontroller STM32F407, support 1 or 2 pressure measurement channels with the ability to automatically identify sensors. Device that transmits data through 4G, real-time monitoring on Web App, warning based on fixed threshold or time frame. Support operating mode continuously or save energy, integrated solar charging and meets standards IP67. Data is saved locally 200 days (cycle every 15 minutes), support SD Card saves configuration and history, and
Sensor Hub - DTG.515
MEI pressure monitoring equipment uses the platform ESP32, designed for industrial, power supply environments 12VDC and connection WiFi in the ecosystem MEI ECO. The device can read multiple pressure sensors and monitor multiple fault contacts via signals 0-24VDC, and output at the same time relay to control horn, warning light, electric valve or PLC interlock. Data is saved when the network is lost and automatically synchronized when connected again. Support equipment OTA Remote firmware update
Sensor Hub - DTG.900
The 4G MEI ECO Logger is an industrial data collector that supports continuous or energy-efficient operation, suitable for a variety of IoT and SCADA monitoring systems. The device integrates 2 RS485 Modbus RTU ports, 4 4–20 mA inputs, 2 pulse reading inputs and 3 control relay outputs. The logger monitors battery voltage, temperature and humidity inside the device, using the highly accurate RTC DS3231. Data is stored on 16 MB Flash and 256 KB EEPROM when connection is lost. Supports remote conf
ChlorScale - DTG.700
The MEI Chlorine mass monitoring and weighing system is an IoT solution used STM32 to continuously monitor the weight of chlorine cylinders using Loadcell, helps determine the amount of chlorine consumed and warns when the chemical is running out. The system integrates additional sensors temperature, humidity, drying temperature and chlorine gas leak sensor, displays data directly on the screen HMI and transmitted to the platform MEI ECO via protocol MQTT. User-configurable alert,receive thresho
Datalogger DTG.100
Data Logger monitors flow and pressure as a device Industrial IoT okay MEI Group designs specifically according to HUEWACO's requirements, using microcontroller STM32 to monitor the water supply network. The device supports reading flow rate Pulse or RS485 Modbus RTU, pressure measurement 4–20 mA, connect 4G LTE and transmit data to the platform MEI ECO qua MQTT. Support system Continuous Mode, Low Power Mode, Offline Data Logging, automatically synchronize data when there is a network, configur
Getway - GT.100
MEI Integrated Gateway is the industrial Gateway set MEI Group research and development, use of resources 12 VDC, integrated 4G LTE, LAN, Wi-Fi and LoRa to collect and transmit data within the ecosystem MEI IoT. Equipment is equipped 01 RS485/Modbus RTU port, 02 Digital Input channels (0–24 VDC), 01 Digital Output channel and sensors temperature, humidity inside to monitor operating status. Gateway supports saving data when connection is lost, automatically synchronizing when the network is rest
Equipment for VIETWATER exhibition
Intelligent pressure monitoring & control system
Leak detection
MEI GROUP's flow measurement equipment set is a low-cost water monitoring solution that uses turbine/Hall sensors to measure pulses and calculate instantaneous flow rate and totalized volume with enough accuracy for residential and light industrial applications. The sensor gives pulse signals according to the water flow speed, the internal datalogger device will process, filter noise and convert to L/min, m³/h and total m³ values. The device integrates an industrial processor, supports 1–2 pulse
Critical-point pressure monitor
MEI Group's 4G connected adverse pressure point monitor is a specialized monitoring device for water supply systems, designed to measure pressure at locations far from pumping stations or at points at risk of low or high pressure. The device uses a 4–20mA or 0–10V pressure sensor, high resolution, to help continuously monitor pressure and send instant warnings when detecting pressure drops, pressure shocks or abnormal fluctuations on the pipeline. In addition to pressure, the device also measures
Hydrological monitoring
System Data Logger monitors MEI Use microcontroller STM32F4, integrated 08 Analog Input channels 4–20 mA, 04 Pulse Counter channels and extended support LoRa to collect data from multiple measurement points. Connected devices 4G LTE, transmit data to the platform MEI ECO via protocol MQTT, support Continuous Mode and Low Power Mode. Built-in memory enabled save data offline for up to 120 days with cycle 15 minutes/time, automatically syncs when the connection is restored. Users can remotely conf
Pressure monitoring with a display
MEI pressure monitoring system is the kit Data Logger IoT Use microcontroller STM32, power supply 9–12VDC, supports pressure sensor connection 4–20 mA for continuous monitoring of water supply systems, pumping stations and industrial pipelines. Data is displayed on the screen, transmitted to the platform MEI ECO through protocol MQTT and supports two operating modes: Continuous Mode and Low Power Mode. Integrated equipment Offline Data Logging, automatically synchronizes data when the connection
MEISync - CTG.1000
Ministry Industrial IoT Gateway do MEI Group research and development, use the platform Raspberry Pi 5 (RAM 8 GB) Integrated display screen, meets real-time data collection, processing and transmission requirements. Communication support devices RS485/Modbus RTU, entrance 4–20 mA, 0–10 V, xung, Digital I/O, same connection Ethernet, Wi-Fi or 4G. Gateway has the ability to store data when connection is lost and automatically synchronize to the server when the network is restored, and supports rem
Office: 585/12/18 National Highway 13, Hiep Binh Ward, Ho Chi Minh City, VietnamR&D office: 121 Street No. 339, Phuoc Long B Ward, City. HCMWorking hours: 08:00 - 17:00 (Monday to Saturday)
Support
- FAQ
- Resources
- Distributor
- Technical Support
MEIGROUP DOWNLOAD
