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 channels, saves daily logs and monitors power status. In particular, the system is designed according to method Super energy saving, uses Deep Sleep mode to reduce consumption to µA levels, allowing for smooth operation pin Lithium over long periods of time and in combination solar charging for areas without mains electricity.
Data is transmitted 4G LTE about the platform MEI ECO, allows viewing realtime flow rate, 24h graph, daily/monthly total, leak warning, abnormal usage flow or signal loss. The device is suitable for residential, agricultural, well monitoring, DMA endpoints and applications requiring low-cost but highly reliable flow measurement equipment.
Flow measurement equipment set of MEI GROUP is an economical - effective solution for applications that need to monitor water flow at a low cost but still ensure reliability. The device uses a flow sensor turbine / hall sensor (YF-DN15…DN50 or equivalent sensor) to measure pulse according to flow rate, then calculate instantaneous flow rate and totalized volume based on the K-Factor.
1. Sensors & technical characteristics
Sensor Type: Hall turbine or Flow Pulse Sensor
Signal: pulse (0–1000 Hz)
Accuracy: ±2–5% depending on model
K-Factor is configurable on the device
Instantaneous flow: L/min or m³/h
totalized volume: L, m³ with high resolution
Support equipment Pulse filter, anti-vibration, ensuring correct measurement in low pressure conditions or lightly dirty water.
2. Datalogger device measures flow rate flow
Industrial MCU STM32/ESP32
Input channels: 1–2 pulse channels (NPN/PNP)
Automatic calculation:
Protection: anti-EMI/RFI interference, long-distance lightning protection
3. Super energy-saving operating method
The device is designed for off-grid station:
Deep Sleep mode
Use battery + solar power
Lithium battery 3.7V or 6V/12V depending on design
5W–20W solar charger
Battery life 6–24 months depending on usage
There is a battery sensor and a mode to reduce sending cycles when the battery is low
4. Data transfer & MEI ECO connection
4G LTE Cat-1/Cat-M1 or NB-IoT (depending on deployment location)
Protocol: MQTT/MQTTS or HTTP
Configure K factor, send cycle remotely via MEI ECO
Automatically save log when network is lost → synchronize when network is available
Data posted to MEI ECO:
5. Alerts & analytics
Leak alert (flow does not return to 0 at night)
Warning of sudden increase in water flow → suspected pipe burst
Warning no water
Low battery warning
Analysis: consumption chart, comparison between periods, forecasting by AI (depending on package)
6. Application
Households - factory water meters
Well monitoring station/raw water
Irrigation area - drip irrigation
Residential area - farm - resort
Low-cost DMA endpoint feedwater monitoring
