南非采购需求：泄漏检测仪，气体检测仪，安全报警系统，气体检测仪价格，天然气泄漏检测仪，多气体检测仪

I'm looking for a reliable Liquid Hydrocarbon Leak Detector System that includes four sensors equipped with floaters. This system will be utilized at a Fuel Depot in a mining environment, so it's crucial that it meets industry standards for safety and performance. Additionally, I'm interested in a hydrocarbon leak detection solution that also features water presence detection capabilities. If you have products similar to a well-known model in this category, please provide details on availability and pricing. Your prompt response would be greatly appreciated.