monitoring pressure

vibrationflowtemperature

sensor

CASE STUDY

Ventilation at Heathrow Airport Terminal 5 - BAA

VARIABLE SPEED DRIVE AND FAN MONITORING SYSTEM

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Application: VSD & Fan Monitoring System

Trolex manufactured and supplied a VSD & Fan Monitoring system for Heathrow Airport Terminal 5. The project required monitoring of eight ventilation fans for the following parameters:

• Motor Winding Temperature (x3) • Motor Bearing Temperature (x2)• Motor Bearing Vibration (x2) • Fan Casing Vibration• Fan Differential Pressure • Fan Stall Pressure• Fan Air Temperature

The system was designed around the very popular TX9044 PSC (Programmable Sensor Controller) with two TX9044 dedicated to each fan station. These units were programmed to give a total of five relay outputs that change state when certain parameters are met. The change of state would raise a customer alarm.

Standard functions of the TX9044 are:

• Simultaneous display of all inputs• 4 x relay outputs• Data logging• RS485 Modbus communication output

CASE STUDY – HEATHROW AIRPORT TERMINAL 5 – BAA

PROJECTOVERVIEW

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CASE STUDY – HEATHROW AIRPORT TERMINAL 5 – BAA

PRODUCTS USED

TX9044 Programmable Sensor Controller (with TX9204 Enclosure 400mm)

TX2071.13 PT100 Temperature Sensor (Air Temperature)

TX5901 Differential Pressure Air Flow Switch

TX6611 Power Supply Unit TX5638.21 Vibration Sensor (Fan Casing)

TX6143 Pressure Sensor

• Direct programming of I/O functions with full information display

• 8 input channels for any choice of analogue sensor, process signal or digital input

• Data communication output ports for RS485 modem operation

• Data logging facility for up to 26,000 input readings per channel

• Modular power supply available in DIN rail mounting format

• Can be used to power 24V dc versions of Trolex Sensors, Controllers and Trip Amplifiers

• Small and easy to install

• Semi-conductor or platinum resistance sensor

• Choice of angled, in-line or surface- mounted temperature sensor

• A diaphragm operated switch with adjustable setpoint output contacts to detect pressure or flow.

• Effectively detects static pressure and vacuum as well as accurately determining blocked filters, fan suction, etc.

• Ideally suited for use in ducts, pipes, tunnels, roadways, etc.

• Smart, programmable analogue pressure sensor for differential pressure measurement

• Long-term stability and exceptional corrosion- resistance to most aggressive media

• High-accuracy pressure capsule with characterised temperature compensation

• ac analogue output of vibration level

• High-accuracy conditioned 100mV/g output

• Single-hole M8 or quickfit mounting

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ELECTRICAL CONNECTIONSTU

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CASE STUDY – HEATHROW AIRPORT TERMINAL 5 – BAA

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CASE STUDY – HEATHROW AIRPORT TERMINAL 5 – BAA

STATION LAYOUTTU

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