Hydrocarbon monitoring from up to 60 points

The GDS300 from Martek Marine is a sequential sampling system for detection of hydrocarbon gas in ballast/void spaces and cargo pump rooms on tankers. The system comprises a steel cabinet housing the sampling pump, pneumatics, solenoid valves, flame arrestors and system electronics. Sample lines are run back to the monitoring points in 8mm copper tubing. Gas samples are sequentially extracted from a maximum of 60 monitoring points and analysed for hydrocarbon gas using a Redline infra-red analyser. The GDS300 controller provides display of the gas concentration at each measuring point, with LED?s indicating sampling and alarm status, and three alarm relays. The unit includes automatic sensing and clearing of blocked lines together with skip, hold and step functions. An internal leak detector provides system integrity, says Martek.