IRU | Ultrasonic Liquid Level Sensors

Monitor liquid levels with an Ultrasonic Sensor and a ControlByWeb® module (See recommended products below) Receive text messages or email alerts when a user-specified level is reached. Log and plot the level history, and more.

How do Ultrasonic Sensors Work
Ultrasonic sensors work by using ultrasonic waves to measure the distance from a target (i.e., a liquid surface). It measures distance by gauging the difference between the time the wave signal was sent, and the time the same wave was received after it bounces off of the surface.
For example, in level-monitoring, the ultrasonic sensor sends a signal which then bounces off of the liquid level's surface. This signal then returns back to the sensor which measures the round-trip time it takes for the signal to travel. The sensor uses the measured time to calculate the distance to the surface of the liquid. The sensor reports that distance to a display and/or a controller. Using this distance, along with the tank’s dimensions and volume, you can calculate how much liquid is left in the tank that you’re monitoring. ControlByWeb modules can calculate this information for you.

Liquid Types
Ultrasonic Sensor works well with many clean liquids; however, it is not ideal for foamy liquids, and chemicals that produce vapors, like gasoline.
These types of liquid can cause false readings when used with ultrasonic sensors.

Ultrasonic Sensor Benefits:

• Easy to install.
• Provide a reliable, non-contact method for level monitoring!

Sensor Ranges:

• We provide monitoring solutions for ranges from 4 inches to 50 feet.

Sensor Accuracy:

• Sensors are accurate within 0.25% of its detected range.

Features:

• Monitor liquid levels
• Real-time level monitoring both locally and remotely
• Industrial level monitoring for mobile and static locations
• Log level history
• Email/text notifications for high/low levels
• And much more...

Ultrasonic Sensors with ControlByWeb Products

1. Real-Time Monitoring
Each ultrasonic sensor can be connected to a compatible ControlByWeb module (see below) to remotely monitor liquid levels in real-time using a standard web browser or mobile device. Liquid levels can be presented to the user as a simple liquid height measurement, or the module can be configured to calculate the volume of liquid used or the volume remaining in the tank and present that to the user. No special software required.

2. Email and Text Alerts
When an ultrasonic sensor is connected to a ControlByWeb module, it can be configured to alert you via email or text whenever a certain levels are reached.

3. Logging and Graphing
Log and graph tank and level data. Email log files at regular intervals.

4. Control Options
In addition to simple remote monitoring, ControlByWeb modules are fully programmable and provide custom control capabilities as well. For example, you can connect a pump to a relay or an output on a ControlByWeb module and remotely run the pump manually, or configure module to run the pump to run automatically if the level gets too low.

Common Level Monitoring Industries
Ultrasonic sensors are commonly used in the following industries:

• Medical Facilities
• Agricultural
• Waste Water Management

Ultrasonic Sensor Setup

1. Connect Ultrasonic Sensor to the RST-3002 programming module, and adjust the parameters to suit your needs.
2. Disconnect Sensor from the RST-3002 and connect to a ControlByWeb product such as the X-418 or the X-420.
3. Connect the ControlByWeb product to your network. See Establishing Communications with ControlByWeb Products
4. Install Ultrasonic Sensor into the top of the tank.
5. Monitor your tank level from the internet anywhere in the world!

Compatible Products:

• Ultrasonic Sensor Programmer (RST-3002) For 4-20mA sensors only
• ControlByWeb Controller Module

1. X-404 Modbus Master Controller
2. X-418 Analog Input Module
3. X-420 Data Acquisition
4. X-22s Analog Input Expansion Module (requires an X-400 controller)

• Power Supply