Project description Overkapping Barendrecht - Observator Instruments

Project:
Project:
Wind monitoring for ‘Overkapping Barendrecht’
Customer:
Customer:
Betuwelijn/HSL/Siemens
Year:
Year:
2003-2005
Country:
Country:
The Netherlands
Description:
Description:
As part of the Betuwelijn, a railway between the
harbour of Rotterdam and Germany, roving of
1500 m is covering in total 9 railways near the
city Barendrecht. One of the most impressive railway
constructions ever build within The Netherlands.
Not only the railway tubes and roof are
impressive, a parking and a park will be build on
it, but also the logistical part of this construction.
For safety reasons and for the control of the ventilation
system Observator Instruments installed
in total 11 wind systems inside this Rail tunnel.
We choose to use the ultrasonic wind systems
from the company Gill instruments. This because
these sensors are provided with a very good accuracy
in very low wind speeds. The sensors
were provided with 4-20 mA outputs, which
were offered to the PLC-system.
PROJECT DESCRIPTION

Within this project all parameters which are measured
should be offered to a PLC which had to control
the complete Electro-mechanical installation.
The wind speed and direction outside of the tunnel
was measured by an ultrasonic wind sensor, which
is installed on a 10 meter high mast. The actual
wind speed and direction is indicated on a display
OMC-138 that was installed in one of the doors of
the electrical cabinet. This unit is used for the fire department
to see what wind direction is blowing in
case of emergancies. The display is provided with
two 4..20 mA outputs containing the information
on wind speed and direction.
Further temperature and humidity is offered to the
PLC.
At all the tunnel ends an ultrasonic wind sensor is
installed. These units were also provided with 4..20
mA outputs. Further the sensor was equipped with
a RS422 communication port. This signal was also
wired into the electrical cabinet. A RS422/RS232
converter was installed for maintenance services
only. Communication to the sensor can be established
without entering the tunnel.
Besides the delivery and commissioning of the system
Observator takes care of the yearly
maintenance of the system.
OMC-118AS
Ultrasonic anemometer
Outside the Tunnel
OMC-118A
Ultrasonic anemome-
Inside the Tunnel
RS422/RS232 converter
4..20 mA to
PLC
OMC-138 Wind display unit
230 Vac
4..20 mA to PLC
The Observator range is in continuous development and so
specifications may be subject to change without prior notice