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Hydropower

Olpas acoustic backscattering sensors (ABS) track sediment loads, of all particle sizes: from millimeter size particles to nano-meter size (yes: you read that correct: nano-meter).

Olpas Sediment monitoring allows durable, low-drift monitoring, protecting turbines in hydro-dams.

Equipped with advanced fouling resistance and minimal sensor drift, these sensors are designed for fixed installations or mobile platforms such as boats and buoys, and can be mounted freely or within guide tubes for stability. Inline mounting is also supported.

“Olpas watermonitoring sensors are the most economic choice when low-maintenance is required. A once-per-3-months maintenance action was enough, while our previous sensor required a once-per-week visit. The ROI of the Olpas sensor was less than 6 months!”

Maintenance Advantages & Cost Efficiency

Olpas Tentacle sensors are engineered for extended maintenance intervals, lasting up to four times longer than optical sensors. With exceptional fouling resistance and drift control the maintenance needs are minimal - even without automated cleaning mechanisms.


This resilience makes it the most cost-effective choice for sewer networks, WWTP influents, and other harsh environments.


Usage of Olpas Watermonitoring sensors

  • Protection of hydro-electric turbines when high loads of sediments are present

  • Sediment runoff monitoring in canals and rivers

  • Ensuring compliance with discharge standards


Sensor Hardware

A submersible sensor, for easy installation in the bassin, close to the inles towards the turbines or to be installed under a buoy. Inline mounting is also supported




A communication node can be provided to collect and store the data, and to send it to a dashboard at regular intervals.


The dual-purpose Data Cable

The cable supports both power (via solar, batteries, or grid) and data transmission, ensuring reliable connectivity for continuous operation in remote or hard-to-reach locations.


Communication & Data Access

An optional communication node collects and stores data, sending updates to a dashboard at regular intervals for easy remote monitoring. The data communication uses open standards, allowing you to integrate the measurements 100% within your own systems. There is no obligation to use our software, no expensive monthly fees are required.




Applications in this field

An Olpas Sludge Concentration sensor installed at a WWTP

Sediment monitoring

Measuring Suspended Sediment Concentration (SSC) helps evaluate transport dynamics and erosion impacts, supporting environmental monitoring and sediment management in hydrodams, rivers, lakes, coastal systems and canals.

Products available in this field 

Selected Products: 

4

OTE-SEDA

OTE-SEDA

Suspended Sediment Concentration (SSC) (Submersible)

Suspended Sediment Concentration (SSC) sensors, using a novel Olpas-proprietary 3-8 Mhz Accoustic Backscattering measurement technology for an exceptional wide coverage of particle sizes for its concentration measurement.

Factory calibrated sensor with exceptional drift-resistant and very few maintenance.

OTU-SEDA

OTU-SEDA

Suspended Sediment Concentration (SSC) (inline)

Inline SSC (Suspended Sediment Concentration) sensors, using the Olpas-proprietary 3-8 Mhz Accoustic Backscattering measurement technology for a wide coverage of particle sizes for its concentration measurement.  

Factory calibrated sensor with exceptional drift-resistant and very few maintenance.  Sensor is easy to install and to maintain with the hot-tap mounting support. 

OTU-TSSB

OTU-TSSB

TSS concentration (Inline mounting)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

OTE-TSSC

OTE-TSSC

TSS concentration in challenging environments

Olpas TSS sensors are pre-calibrated, drift-resistant and required very few maintenance; thanks to an industry leading fouling resistance and minimal sensor drift. 

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