Trolex design and manufacture a wide range of equipment, including power supplies and sensing equipment for temperature, vibration, gas and others.

Several Trolex products are currently undergoing Australian intrinsically safe approval testing, two of which are CO2 gas sensors. The Infra-red gas sensor/transmitter is a fixed CO2 monitor for point source hazard and perimeter protection in arduous duty and exposed locations. The EMS personal gas monitor is a compact handheld instrument for continuous monitoring of dangerous gas concentration and the CO2 sensor is a plug in module enabling the EMS unit to monitor CH4 CO, O2 and now CO2 on one unit.

Rod Gilmour, Austdac national sales manager said approvals for these two products are expected by year-end.

In related news, Austdac is one of the exhibitors at next week's LONGWALL 2002 conference, being held in the Hunter Valley, NSW.

Gilmour said the company would demonstrate its Roof Convergence Monitoring system at the conference. The system allows the real-time monitoring of extensometer readings via the Dupline transmission system which is then transmitted to a network.

“There has been tremendous interest in the real time roof convergence monitoring system and several mines have committed to installing the system. These installations will mean the mine has the same transmission system for conveyor control and monitoring, longwall signalling and communications, mine wide gas monitoring and now roof convergence monitoring,” Gilmour said.

"We will also be showing where we are going with longwall signalling and communications.”