Wireless Level Indicator System Solution

Wireless Level Indicator System Solution

Featured in this article:
  1. Smart Water Wi-Fi Starter Pack (Sensor, Transmitter & Gateway) - SW900-STARTER-D
  2. Antenna Kit for Inseego Skyus 160 LTE Cellular Router - RFWY12-SK160NE-ACR-050 (Consider other device antenna kits for other cellular devices)
  3. 900 MHz ISM 8dBi Fiberglass Omni Antenna - FG9026
  4. 10 ft LMR 400-series Equivalent Low Loss Cable with N-Male to N-Male Connectors - RFWCAB400NMNM010
  5. 1 ft SMA-Male (SMA Plug) to N-Female (N Jack) Cable - RFWCAB58SMMNF001
  6. Smart Water LoRa Wireless Pump Controller, 110VAC - SW900-PUMP-110VAC

Level indicators is an easy way to measure water levels in tanks, sump pit monitoring, and detect leakages in storage spaces. Level indication systems are widely used both for small scale and industrial applications. 

Basic components for level measurement include sensors (floats, level sensors, ultrasonic sensors, or pressure sensors), transceivers (transmitter at the tank for example, and a receiver/gateway at a central place), and actuators (can be an alarm/buzzer or a controller to do some function).

Incorporating wireless transmission in level indicator systems makes monitoring efficient as the data can be transmitted to an ideal location e.g., to cloud for 24/7 monitoring or to central office where an operator can monitor data or to a controller for automatic or controlled action.

See below possible ways to incorporate wireless solution:

  1. Cellular transmitters on tanks.
This can be invaluable for applications such as fuel monitoring for mobile trucks or any fluid tank in transit. Set up includes a suitable fluid sensor (ultrasonic or capacitive level sensors), and a wireless communication device (LTE-M or NB-IoT enabled).

See below sample overview of the connection flow.


wireless level monitoring for mobile applications
Wireless level monitoring for mobile applications

  1. Fixed wireless transmissions
For fixed applications such as tanks at homes, or industrial tanks, Wi-Fi or 900MHz technologies, for example, can be used for transmission of data between transmitters and receivers/gateway as well as between gateways and actuators.

Transmitter at tanks send level information and receiver/gateway at a central location receives data for displaying/warning, automation or transmission to cloud. See below illustrations.

Wireless level system with transmitter at tank and receiver with display and alarm

Wireless level system with transmitter at tank and receiver with display and alarm.




Cloud connected wireless water level system with transceiver system and automated pump controller

Cloud connected wireless water level system with transceiver system and automated pump controller.


See below diagram for water level system with pump controller option and cellular connectivity. Includes signal improvement for the cellular signal and the pump controller connection. See link for more details.

wireless level monitoring solution diagram

Diagram for wireless level monitoring solution

With the signal improvement using the 900MHz antenna, when running the cable from the radio to the antenna, you may face attenuation issues. You may want to use in-line 900MHz amplifiers (like the 12-101, 12-105, and 12-103 amplifiers) near the antenna in case of long cable runs to maintain a strong signal reaching the antenna. 

Contact our wireless communication team for assistance in case of similar or other wireless solutions.

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