Sensors & Transducers


Vibration monitoring system for Mersey Tunnels

July 2005 Sensors & Transducers

Monitran has supplied Mersey Tunnels (in the United Kingdom) with a multichannel vibration monitoring system for measuring the vibration levels of the fan ventilation system in the tunnels acting as a preventative maintenance aid by providing them with data to plan when service and repair work can be carried out.

The Kingsway Tunnel has two 2,2 km long tubes which connect Liverpool to Wallasey, providing an important traffic route for both commuter and heavy goods vehicles. The latest tunnel is now 30 years old and with its four traffic lanes it links Liverpool with the Wirral, giving it fast access to the M53 motorway and the freight ferry terminal to Ireland.

In the tunnel are eight sets of ventilation systems with both extract and blow, four of the sets being on standby. Each system has large fans with blade diameters of up to 3,5 m. The level of carbon monoxide and smoke density are both monitored manually and at excessive levels the operator can change the fan speed or, in the event of fan failure, bring a standby fan online.

Each fan is driven through a Radicon gearbox, the bearings of which are monitored for vibration levels. When these levels become excessive, maintenance engineers can switch over to the four standby fans and move in to carry out service or repair work.

Because the fan systems are in robust casings, the components cannot be seen or accessed easily, which eliminates manual monitoring with a portable vibration meter. Mersey Tunnels overcame this by fitting a permanent Monitran vibration sensor at each point on the eight fan systems, giving continuous simultaneous vibration readings for the whole tunnel.

All of the sensor signals are cabled into the multichannel MTN 6000 vibration monitoring system housed in an industrial enclosure, which provides sensor excitation, signal conditioning, level indication and pre-set alarm level triggering via relay units.

For more information contact Andy Brown, Temperature Controls, 011 791 6000, andyb@tempcon.co.za, www.tempcon.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Sensors for predictive maintenance solutions
December 2019, Turck Banner , Sensors & Transducers
Banner Engineering’s QM30VT series sensors build on the capabilities offered by the QM42VT Series sensors they replace. They maintain all the same functionality, registers, and scaling, however, their ...

Read more...
On safe paths with Leuze
December 2019, Countapulse Controls , Sensors & Transducers
When using the principle of triangulation for navigating automated guided vehicles (AGVs), vehicles are often equipped with two different scanners – one for safety and one for navigation. Now there is ...

Read more...
Electronic position indicator with Ethernet interface
December 2019, Instrotech , Sensors & Transducers
Instrotech now offers the Siko AP20 position indicator, equipped to detect the position of spindle adjustments in machines. It displays the corresponding positional data to the operator and passes it ...

Read more...
Inline measurement in chemical process monitoring and control
December 2019 , Sensors & Transducers
For reasons of quality and safety, the control of processes in the chemical industry is essential. The monitoring should be done directly in the process, continuously, and on a real-time basis. Modern ...

Read more...
Setting the future standard for 3D image processing
November 2019, SICK Automation Southern Africa , Sensors & Transducers
SICK Automation has set the future standard for 3D image processing with regard to technology, speed, resolution and ease of integration. The company’s Ranger3 3D vision camera is capable of taking high ...

Read more...
Millimetre perfect from ifm electronic
November 2019, ifm - South Africa , Sensors & Transducers
Precise ToF distance sensor for demanding applications Thanks to the innovative on-chip time-of-flight principle with PMD technology (photonic mixer device), the new OGD precision sensor from ifm electronic, ...

Read more...
Bright, versatile illumination
November 2019, Turck Banner , Sensors & Transducers
The bright, uniform output of the WLB72 reduces shadows, improves visibility and gives workers the light they need to work efficiently and without making mistakes. A diffuse window minimises eye strain ...

Read more...
Time synchronise your key remote sites
November 2019, Omniflex Remote Monitoring Specialists , Sensors & Transducers
Managing processes where root cause identification is rapidly identified can generate substantial savings though improved productivity and implementation of planned preventive maintenance schedules. Knowing ...

Read more...
Infrared sensors for stock control
October 2019, Gail Norton Instrumentation , Sensors & Transducers
Telco’s high performance, self-contained infrared sensor series provides a total solution for pulp and paper applications. This industry poses serious problems for photoelectric sensors as the highly ...

Read more...
Positioning sensor achieves high accuracy
October 2019, SICK Automation Southern Africa , Sensors & Transducers
SICK Automation’s next-generation laser distance measurement sensor, DL100Hi, achieves higher levels of accuracy over greater distances for positioning and control in fast-moving environments. This high ...

Read more...