This wireless submersible liquid level transmitter features NB-IoT connectivity for wide coverage, low power use, and reliable data transmission. A 19,000 mAh lithium battery ensures long-term operation. It supports magnetic wake-up, cyclic data storage, real-time remote monitoring, Bluetooth configuration, and alarm notifications. Ideal for smart water networks, buildings, utilities, and industrial IoT.
Features
* Equipped with an NB-IoT module: Wide coverage, multiple connections, high speed, low power
consumption, and superior architecture.
* Large 19000mAh capacity for extended battery life: Low power consumption/lithium-thionyl
chloride battery makes battery swapping worry-free.
* Contactless panel, magnetic wake-up: No buttons required, simply swipe the magnetic panel across
the screen to wake it up.
* Circular data storage: Offline data is automatically stored to prevent data loss.
* Real-time data acquisition, wireless remote transmission: Real-time data monitoringvia PC and
mobile devices.
* Data storage: Multiple functions including data recording, storage, and export.
* Upper and lower limit/threshold alarms: PC webpage alerts or WeChat push notifications.
* Local Bluetooth settings: Communicate with the device via mobile phone Bluetooth to set parameters.
Transmitter
| Specification of Wireless Submersible Liquid Level Transmitter LFT3600 | |
| Measuring Range | 0~1...200mH₂O |
| Accuracy | ±0.5%F.S |
| Overload Pressure | 1.5 times rated pressure |
| Pressure Form | Gauge G |
| Measured Medium | Gases or liquids compatible with 304 and 316L stainless steel, fluororubber, or nitrile rubber. |
| Operating Temperature | -20℃~70℃ |
| Storage Temperature | -40℃~85℃ (without battery) |
| Power Supply | NB-IoT: 3.6V@19Ah (disposable lithium-ion battery); 4G: 3.6V@19Ah (disposable lithium-ion battery)/10~30VDC |
| Power Consumption | Average transmit current ≤100mA@3.6VDC; Sleep current ≤20uA@3.6VDC; |
| Pressure Interface | Submersible/M20x1.5 mounting |
| Communication Method | NB-IoT / 4G |
| Communication Band | NB-IoT: B5/B8; 4G: Full network compatibility |
| Communication protocol | MQTT |
| SIM card | Nano SIM (12.3mm x 8.8mm x 0.67mm) |
| Buttons | Contactless panel interaction |
| Configuration method | Local Bluetooth |
| Reporting cycle | Adjustable from 1 to 1440 minutes, default 120 minutes |
| Sampling cycle | Adjustable from 10 to 600 seconds, default 60 seconds |
| Pressure alarm | Upper limit, lower limit, and dynamic change thresholds for liquid level can be set |
| Protection level | IP65 |
| Antenna type | Built-in horn antenna / external suction cup antenna |
| Weight | 1.9kg |

Equipped with an NB-IoT module: Wide coverage, multiple connections, high speed, low power consumption, and superior architecture.
Large 19000mAh capacity for extended battery life: Low power consumption/lithium-thionyl chloride battery makes battery swapping worry-free.
Contactless panel, magnetic wake-up: No buttons required, simply swipe the magnetic panel across the screen to wake it up.
Circular data storage: Offline data is automatically stored to prevent data loss.
Real-time data acquisition, wireless remote transmission: Real-time data monitoring via PC and mobile devices.
Data storage: Multiple functions including data recording, storage, and export.
Upper and lower limit/threshold alarms: PC webpage alerts or WeChat push notifications.
Local Bluetooth settings: Communicate with the device via mobile phone Bluetooth to set parameters.
Widely used in smart IoT:
Integrated utility tunnel environmental monitoring
Intelligent monitoring of drainage/water supply networks
Smart healthcare
Water supply network monitoring
Intelligent monitoring of fire-fighting water systems
Smart industrial parks
Building intelligence
Industrial IoT
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