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Home Our Equipment Water Level Sensors LIDoTT Sensor
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.
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.
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. When positioned in environments exposed to direct sunlight, a solar radiation shield must be used.
MCERTS accredited against the EA testing standards for Event Duration Monitoring, LIDoTT is the UK’s first battery battery powered MCERTS EDM monitor*.
LIDoTT® is simple to install and ultra-low maintenance by design. It requires no external atmospheric breather for its pressure-sensor.
External battery and antenna options are available for challenging environments.
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.
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.
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.
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.
The LIDoTT® Sensor communicates using a number of serial protocols including Modbus* and will connect to many compatible data loggers.
*Available as a product variant
ULTRASONIC LEVEL SENSOR
Type: Piezo-ceramic, temperature-compensated
Range: 0.000 – 1.500m
Accuracy: +/- 2mm
TEMPERATURE SENSOR
Type: High Precision CMOS Temperature device
PRESSURE SENSOR
Type: Isolated Silicon Diaphragm
Range: 0-10.00m
Accuracy: ±0.2% FS
ENVIRONMENTAL
Operating temperature: -20°C to +60°C.
Protection: IP68/NEMA6P.
Connectors: IP68 Mil – Spec.
Dimensions: 200mm(h) x 125mm(d) x 115mm(w)
APPROVALS
LIDoTT Sensor ATEX Zone 0 certified CML 20ATEX2039X IECEx Zone 0 certified IECEx CML 20.0019X II 1 G, Ex ia IIB T4 Ga. Ta= -20°C to +60°C MCERTS No: MC240396/00 MCERTS Ultrasonic sensor certified range: 1m MCERTS Temperature Range: -10°C to +40°C
LIDoTT Smart ATEX Zone 0 certified CML 21ATEX2097X IECEx Zone 0 certified IECEx CML 21.0002X II 1 G, Ex ia IIB T4 Ga. Ta= -20°C to +60°C MCERTS No: MC240396/00
Patent Number: GB2591274
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