Project description Overkapping Barendrecht - Observator Instruments
Project description Overkapping Barendrecht - Observator Instruments
Project description Overkapping Barendrecht - Observator Instruments
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<strong>Project</strong>:<br />
<strong>Project</strong>:<br />
Wind monitoring for ‘<strong>Overkapping</strong> <strong>Barendrecht</strong>’<br />
Customer:<br />
Customer:<br />
Betuwelijn/HSL/Siemens<br />
Year:<br />
Year:<br />
2003-2005<br />
Country:<br />
Country:<br />
The Netherlands<br />
Description:<br />
Description:<br />
As part of the Betuwelijn, a railway between the<br />
harbour of Rotterdam and Germany, roving of<br />
1500 m is covering in total 9 railways near the<br />
city <strong>Barendrecht</strong>. One of the most impressive railway<br />
constructions ever build within The Netherlands.<br />
Not only the railway tubes and roof are<br />
impressive, a parking and a park will be build on<br />
it, but also the logistical part of this construction.<br />
For safety reasons and for the control of the ventilation<br />
system <strong>Observator</strong> <strong>Instruments</strong> installed<br />
in total 11 wind systems inside this Rail tunnel.<br />
We choose to use the ultrasonic wind systems<br />
from the company Gill instruments. This because<br />
these sensors are provided with a very good accuracy<br />
in very low wind speeds. The sensors<br />
were provided with 4-20 mA outputs, which<br />
were offered to the PLC-system.<br />
PROJECT DESCRIPTION
Within this project all parameters which are measured<br />
should be offered to a PLC which had to control<br />
the complete Electro-mechanical installation.<br />
The wind speed and direction outside of the tunnel<br />
was measured by an ultrasonic wind sensor, which<br />
is installed on a 10 meter high mast. The actual<br />
wind speed and direction is indicated on a display<br />
OMC-138 that was installed in one of the doors of<br />
the electrical cabinet. This unit is used for the fire department<br />
to see what wind direction is blowing in<br />
case of emergancies. The display is provided with<br />
two 4..20 mA outputs containing the information<br />
on wind speed and direction.<br />
Further temperature and humidity is offered to the<br />
PLC.<br />
At all the tunnel ends an ultrasonic wind sensor is<br />
installed. These units were also provided with 4..20<br />
mA outputs. Further the sensor was equipped with<br />
a RS422 communication port. This signal was also<br />
wired into the electrical cabinet. A RS422/RS232<br />
converter was installed for maintenance services<br />
only. Communication to the sensor can be established<br />
without entering the tunnel.<br />
Besides the delivery and commissioning of the system<br />
<strong>Observator</strong> takes care of the yearly<br />
maintenance of the system.<br />
OMC-118AS<br />
Ultrasonic anemometer<br />
Outside the Tunnel<br />
OMC-118A<br />
Ultrasonic anemome-<br />
Inside the Tunnel<br />
RS422/RS232 converter<br />
4..20 mA to<br />
PLC<br />
OMC-138 Wind display unit<br />
230 Vac<br />
4..20 mA to PLC<br />
The <strong>Observator</strong> range is in continuous development and so<br />
specifications may be subject to change without prior notice