Dam Monitoring in South Africa
The purpose of the Komati River Basin Development Project is to assure water availability in order to promote economic development. OTT’s part of the project was to supply dataloggers for the monitoring of the river flows into and out of the Maguga and the Driekoppies dams.
The technical needs were high-level:
- Technology designed specifically for environmental monitoring applications
- Robust in construction for long-term deployment
- Long-life internal power source
- Small installation footprint
- Easy to install and maintain
- Remote data transmission capabilities; GSM or satellite
- Software system that is compatible with customer’s IT infrastructure
- Flexible data management and data handling.
OTT ecoLog 500
Mesure du niveau et de la température de l'eau, transmission à distance via UMTS/HSPA+ ou GSM/GPRS
L'enregistreur compact pour nappes permet de mesurer, enregistrer et transmettre niveau d'eau et température. Il convainc par sa qualité, son prix et son efficience énergétique.
- Eau de surface Eau souterraine
- Sonde de pression avec cellule de mesure céramique
- Niveau d'eau/pression, température de l'eau
- Modem UMTS/HSPA+ ou GSM/GPRS intégré, avec piles au lithium d'une durée de vie maximale de 10 ans
- 0 à 4, 10, 20, 40, et 100 m
- ± 0,05 % de la valeur finale de la plage de mesure
- Oui
OTT ecoLog 800
Mesure du niveau, de la température de l'eau et de la conductivité, transmission à distance via UMTS/HSPA+ ou GSM/GPRS
OTT ecoLog 800 est un système de surveillance des nappes compact et économique, conçu pour mesurer, enregistrer et transmettre à distance le niveau, la température et la conductivité de l’eau.
- Eau de surface Eau souterraine
- Sonde de pression avec cellule de mesure céramique et cellule de mesure de conductivité à 4 électrodes en graphite
- Niveau d'eau/pression, température de l'eau, conductivité
- Modem UMTS/HSPA+ ou GSM/GPRS intégré, avec piles au lithium d'une durée de vie maximale de 10 ans
- "Niveau d'eau : 0 à 4, 10, 20, 40 et 100 m Conductivité : 0,001 à 2,000 mS/cm, 0,10 à 100,00 mS/cm "
- "Niveau d'eau : ± 0,05 % de la valeur finale de la plage de mesure Conductivité : 0,001 à 2,000 mS/cm, ± 0,5 % de la valeur mesurée ; 0,10 à 100,00 mS/cm, ± 1,5 % de la valeur mesurée"
- Oui
OTT Hydras 3 Basique
Le logiciel de communication - OTT Hydras 3 Basic
Le logiciel OTT Hydras 3 Basique simplifie la gestion des stations d'acquisition et de transmission, des stations de mesure et des petits réseaux de mesure.
- Hydrométrie, météorologie et protection de l'environnement
- Microsoft Windows 95/98/2000, Windows NT 4.0, Windows XP, Windows 11
- Paramétrage et lecture de stations Import automatique de données. Affichage de données
The Komati River Basin Water Authority (KOBWA) was established in 1993 with the purpose of implementing the first phase of the Komati River Basin Development Project. It comprised the design, construction, operation and maintenance of the Driekoppies Dam in South Africa and the Maguga Dam in Swaziland. The purpose of the project is to assure water availability in order to promote economic development, so the tasks are:
- Evaluating the hydrology of the Komati Basin to determine water availability
- Developing and implementing decision support systems to optimize water allocation/supply
- Facilitating communication between KOBWA and stakeholders on system operation
The remote monitoring system was designed with the following hardware components and functions:
- 9 ecolog800 units and 2 ecoLog500 units were deployed at flow measuring points within the KOBWA water management area. All equipment was installed at existing weir sites in South Africa and Swaziland with the rivers crossing borders of both countries
- Parameters are recorded at 15 min intervals and reported 4-hourly via GSM/GPRS using FTP transfer to a secure server hosted by OTT.
- The ecoLog units had to be specially modified to allow for installation in pipes. The vented cables had to be cut, pulled into the cable pipes and then specially prepared and joined in housings specified by OTT Hydromet in Kempten.
The remote monitoring system was designed with the following software components and functions:
- OTT Hydras3 + RX software was installed on a local PC at the KOBWA offices at Driekoppies Dam, Schoemansdal, Mpumalanga Province, South Africa.
- Data is retrieved via an internet connection using FTP format and the database is populated automatically.
- Hydras3 software provides graphical interface and data export functions into other formats (text, Excel).