We are producing molten sulfur in our refinery with truck loading facility. However, truck drivers seems to be exposed to sulfur fog (or small amount of H2S) when they check level of loaded sulfur in truck. We don't have automatic system for the checking of loaded sulfur, for the time being. In order to avoid this unhealthy condition,we are considering the improvement of this loading facility with some automatic flowmeter and/or automatic level indicator, by which we can make drivers not to be exposed to the sulfur fog. Is there any good idea, if you guys have please let me know ?