LIDoTT Sensor

Description

LIDoTT® is a next generation water level monitoring sensor. It integrates ultrasonic level, pressure depth and temperature sensors into one compact device. LIDoTT® delivers high-quality data throughout normal dry-weather operating and either wet-weather or blockage induced surcharge conditions.

LIDoTT® is a unique, UK and Worldwide, patented design. On rising and falling water levels, LIDoTT® seamlessly transitions from ultrasonic level measurement to pressure depth measurement and back again – delivering continuous data.

Widespread deployment

As a water level monitoring sensor, LIDoTT® is cost efficient and therefore ideal for widespread deployment. It can be positioned in sewer networks, in domestic sewer manholes and throughout other water courses.

Designed for Convenience

LIDoTT® is simple to install and ultra-low maintenance by design. It requires no external atmospheric breather for its pressure-sensor.

The enclosure is moulded from a carefully selected, resilient, naturally self-cleaning plastic polymer and is submersible. LIDoTT® is safe to use in all environments being

ATEX and IECEx certified Zone 0.

Continuous Measurement

When the sewer network is stressed during storm weather events or by blockages, the LIDoTT® water level monitoring sensor automatically switches sensor mode from ultrasonic (level) to pressure (depth) as the liquid level rises, seamlessly delivering high-quality network management data. This transition is transparent to the external datalogging device which needs only a single recording channel.

Three sensors in one

Ultrasonic level sensor

The LIDoTT® sensor reliably detects subtle changes in “normal” operating conditions – accurately delivering, for example, small silt-induced variations in Depth of flow.

“In Air” Temperature sensor

Primarily used to calibrate distance measurement for changes in air density, temperature can optionally be delivered to the datalogger as a measured parameter.

Pressure sensor

With its 10m H2O operating range, the pressure sensor deals with exceptional Depth measurement. LIDoTT® delivers seamless transition from Level measurement – using its Ultrasonic sensor, to Depth measurement – using its Pressure sensor. The pressure-sensor is activated and measures rising depth before the Ultrasonic sensor blanking distance (dead-band) is reached.

How it works

As the liquid level rises, the ultrasonic sensor is in charge. Once the level reaches the bottom of the pressure sensor, pressure reading starts and a calibration sequence begins.

By the time the level enters the ultrasonic dead-band, the calibration sequence is complete and the calibrated pressure sensor takes over, delivering continuous, accurate depth data.

Data Communications

The LIDoTT® Sensor communicates using a number of serial protocols including Modbus* and will connect to many compatible data loggers.

• Real time monitoring helps you better understand your sewer network
• Automatic sensor switching enables continuous delivery of high quality network management data.
• Data logging device needs only a single depth recording channel.
• Designed to be compatible with many manufacturers’ data loggers.

*Available as a product variant