Selective, failsafe flame monitoring
October 2011
IS & Ex
Durag’s D-LX 200 is a compact flame monitor for continuous operation in large power stations, heating plants, chemical processes, incineration plants, rotary kilns and cement plants. The system reliably detects flames from all fuels, particularly gas, oil, coal and wood, as well as various combustion processes. The high sensitivity and ambient temperature ranges enable the flame monitor to be used in the most diverse environments.
The flame radiation is converted into an electrical flame signal by a highly sensitive photodiode. Different photodiodes allow for effective conversion of the flame radiation from various fuels and burner types (UAF, UA and IG versions).
The D-LX 200 has an ambient temperature range from -40°C to +85°C and separate thresholds for flame intensity and flicker frequency. Two ranges are available with selectable parameters. It is possible to switch between these ranges externally so that the flame monitor can easily be adjusted to different combustion conditions.
The D-LX 200 is failsafe, and self monitoring, and it meets the highest international safety standards and regulations for continuous operation. Its dual channel design eliminates the need for electrical and mechanical shutters and it complies with Safety Integrity Level 3 (SIL3) certification.
Communication is via Modbus RTU (RS485) or IrDA. The settings and flame signal are directly visible via LEDs and switch settings. All D-LX 200 types are available as models for use with fibre-optic systems (D-LX 720) and the connection flange is compatible with Durag’s D-LE 603 or D-LX 100 flame monitors.
For more information contact Mike Andrews, OEN Enterprises, +27 (0)11 675 4447, [email protected], www.oenenterprises.co.za
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