Lindorm Products

Instruments for Environmental Monitoring Under Water

Designed by researchers to allow for cost-optimal solutions, operational flexibility, and statistical error management

SediMeter™ — an environmental monitoring instrument for sedimentation, erosion, siltation, scour, and transport. It measures changes in bottom elevation with a resolution of a fraction of a millimeter.

SediMeter™ for attachment — a new version designed for easy attachment to structures such as bridge piers. It is intended for monitoring bridge scour, and for studying sediment transport in rivers with high discharge peaks. It is under development and the design is preliminary. Contact us for more information.

LogDator™ — the miniature computer developed for the SediMeter can also be used for other measurement applications. Like the SediMeter it can accept optional sensors, which may be sampled up to 84 times per measurement, and it can be used as a stand-alone logger or in a network of up to 255 instruments.

SediMeter™ mounting — the video shows how easy it is to deploy the instrument.

Sedimentation rate measurement — this data shows the settling rate of formazin, with 30 minutes between measurements and 9 mm between optical backscatter detectors. The diagonal line corresponds to a fall velocity of 0.0107 mm/s. The main purpose of the SediMeter is to measure changes in bottom level, though.

Anchor screw in the foreground, and behind it holder tube, handle, and the SediMeter instrument itself

LogDator™ with sensors for light and pressure (for water level, tide, and wave measurements)

The original SediMeter™ prototype, mounted on an ooid ridge at Tongue of the Ocean, the Bahamas. The current-rotor option is no longer available since it does not fit on the new, smaller, SediMeter™.

Flat SediMeter for bridge scour and turbidity monitoring

<a href="video/SediMeter.mp4">[View using Helper Application]</a>
The SediMeter in this video has optional sensors for pressure and light.