The manhole water level monitor is an intelligently designed integrated instrument, This product employs a low-power consumption design which utilizes a silicon piezoresistive level sensor with stainless steel isolation diaphragm as its water level signal measurement element, By utilizing a high-precision AD converter to acquire the water level signal, zero-point and temperature performance compensation for the water level is achieved across a wide temperature range. Powered by a quickly replaceable, high-capacity and long-lasting lithium-thionyl chloride battery pack, Suitable for indoor, outdoor, or other environments without mains power. The product can be widely used in petroleum and petrochemical, metallurgy, environmental protection, gas, fire, municipal, chemical, shipping, power, process control, sewage treatment,emergency rescue monitoring and other industries.The product utilizes 4G or NB-IoT wireless communication technology to remotely transmit data to the backend management platform, Realize functions including real-time monitoring of on-site water level data,alarm handling and statistical analysis.

2. Product Function

2.1 Water level online monitoring

Real-time online monitoring of the water level in manholes is conducted using pressure-based measurement technology.

2.2 Multi-level alarm mechanism

The system features a multi-level water level alarm mechanism, employing distinct data sampling and transmission methods corresponding to different alert tiers, thereby addressing diverse application scenario requirements.

2.3 Data breakpoint resume transmission

Supports historical data storage and transmission, support breakpoint resume transmission function.

2.4 External wake-up

The water level monitor can be activated by an external trigger while in sleep mode, with immediate data transmission upon awakening.

2.5 Multiple working modes

Supports real-time monitoring and querying functions, allowing online configuration of device data sampling time, sampling interval, and transmission interval.

2.6 Support remote configuration
Supports remote Over-the-Air (OTA) upgrades, remote configuration, Bluetooth-based configuration, and on-device settings.

2.7 Support self monitoring transmission interval

Features a large-size LCD screen design with display capabilities for water level, voltage, signal strength, data transmission count, and other parameters.

3. Installation instructions

3.1 Installation precautions

The manhole water level monitor is installed using a wall-mounted bracket system. Appropriate construction safety precautions must be implemented prior to installation.The device should be installed in the manhole with simple structural and robust shaft wall. Installation on irregular wall structures should be avoided to prevent interference with water level measurement.