Water monitoring: Sediment load

OTE-SEDA

OTE-SEDA-001

Olpas Sediment Load sensor

Suspended Sediment Concentration (SSC) sensor for placement in open water or canals.
Pre-calibrated modbus-sensor.

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Measurement

Thanks to using the OLPAS ultrasound measurement technology, the sensor is much less negatively impacted by fouling on the sensor head.

This results in maintenance intervals that are much longer compared to optical sensors.

There is no need for wipers.

Advantages

The ultrasound OLPAS Technology provides a robust measurement that is not prone to changing water colour or other optical changes that are not relevant for the actual SSC (Suspended Sediment Concentration)
Olpas sensors measure through fouling, requiring much less maintenance
and no need for automated mechanical cleaning (no wipers, no pressured air)
Due to the longer maintenance window, Olpas sensors can be installed on hard to reach locations (eg. in canals or in open nature), while still providing an economical measurement

Basic maintenance (or routine maintenance) includes cleaning the sensor with a soft sponge, cloth, or tissue.

Standard mild cleaning products can be used to clean the sensor better.

A visual inspection to assess the integrity of the housing is recommended to detect any problems in a timely manner.

Preventive Maintenance

Preventive maintenance should be performed when one of the following scenarios occurs:

Use of the sensor outside the recommended temperature range (based on external or internal temperature measurement)
After one year of continuous use
In the case of physical, mechanical, or electrical damage to the sensor
When humidity reaches 85% or higher inside the sensor housing
The sensor’s measurements deviate from the real concentration, even after calibration

Installation

The Olpas Tentacle is designed to operate fully or partially submerged in water at all times. Contact with water on the ultrasonic window is necessary to perform a measurement. maintenance interval due to strong adhesion of dirt residues.

Fixed mounting

The fixed mounting of the sensor is done using two hanging brackets (M10).

Suspension

A flexible installation can be achieved by suspending the sensor from the provided bracket using a stainless steel chain. This can be done either as a free-hanging installation (no restriction on lateral movement of the sensor) or by using a standpipe (restricting the lateral freedom of the sensor).

Both solutions are ideal for easily removing the sensor for routine or preventive maintenance.

Water Level

The Olpas Tentacle is designed to operate fully or partially submerged in water at all times. Contact with water on the ultrasonic window is necessary to perform a measurement.

Temporary drying

Temporary drying of the sensor will not cause damage, and the sensor will automatically resume operation upon contact with water. However, frequent drying of the ultrasonic window will shorten the maintenance interval due to strong adhesion of dirt residues.

Interface

Operations via Modbus interface.

No display or buttons needed.

Configuration possible via Modbus

Power

The sensor can be powered with a DC supply voltage of 6V to 24V with a nominal power consumption of 1.5W at 5V.

A measurement value is available after 3 seconds

Solar-power or battery powered possible.

Battery pack available

Contact our customer support team for options.

Four-wire cable with 4-pin M12 connector.

RS485 Modbus RTU(*)

4 registers used:

Measurement Value
Temperature C
Humidity %
Unique Sensor Serial Number (0 - 65535)

Optional integration into existing IoT-solutions or PLC Optional node for communication / Datalogging capabilities

(*) Modbus slave address ’73’. Other addresses can be requested when ordering

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All product variations

CUSTOM	Custom solutions possible
OBO-IWAA-001	Dry Solids (%DS) measurement in Iron water / Iron sludge
OBO-MLSA-001	MLSS / (activated) sludge concentration (Chain mounting)
OTD-MLSA-004	MLSS / (Activated) sludge concentration
OTD-MLSB-00X	MLSS / (Activated) sludge concentration (hot-tap transducer)
OTD-SDWA-00X	TSS (Sludge concentration) in sludge: 0 - 10% solids
OTD-SDWB-00X	TSS in centrate
OTD-SDWC-00X	Polymer concentration in centrate
OTD-SDWD-00X	Dry Solids in Sludge Cake: 0 - 40% DS
OTD-SDXA-00X	TSS (Sludge concentration) in sludge: 0 - 10% solids (with Hot-tap sensor)
OTD-SDXC-00X	Polymer concentration in centrate (extended hot-tap transducer)
OTD-SEDA-001	Sonde, Sediments: 0 - 50 g/L
OTD-TSSA-001	TSS concentration: 0 - 100 mg/L
OTD-TSSA-002	TSS concentration: 0 - 500 mg/L
OTD-TSSA-003	TSS concentration: 0 - 1.000 mg/L
OTD-TSSA-004	TSS concentration: 0 - 10.000 mg/L
OTE-CUSC-00X	Custom solution possible
OTE-SEDA-001	Olpas Sediment Load sensor
OTE-TSSC-001	Sonde, TSS concentration: 0 - 2 g/L
OTE-TSSC-002	Sonde, TSS concentration: 0 - 4 g/L
OTE-TSSC-003	Sonde, TSS concentration: 0 - 6 g/L
OTU-IWAA-001	Dry Solids Measurement in Iron Slude / Iron Water (Inline)
OTU-MLSA-001	MLSS / (activated) sludge concentration (Inline)
OTU-SDXA-001	Sludge Concentration (inline mounting, hot tap transducer)
OTU-SDXB-001	TSS in dewatering centrate (Inline mounting)
OTU-SDXC-001	Polymer concentration in centrate (extended hot-tap transducer without screen and butons)
OTU-TSSB-001	TSS concentration (Inline mounting)

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With our versatile OLPAS Technology, we can build a tailor made sensor optimised for your application.

Olpas as a strategic partner

For a partner in a specific niche in water treatment, we worked together in finding added value for its clients.

OLPAS technology provided additional ways to monetise the client-relation by providing process-optimisation on top of the traditional sales of hardware.

Expand your product-range

Olpas can provide its technology as part of your product or as a OEM-product, making your brand shine with our innovative measuring technology.