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VISATRON VN116/87PLUS
VISATRON VN 116 series as compared to the VN 115 series, is more sensitive because it has an additional differential alarm level.
It compares the oil mist concentration from each side of the heeder-suction- tube section and responds if there is a difference, this being a sure sign for an overheating damage in the compartment group with the higher opacity.
The differential alarm level is carried along with regard to its sensitivity relating to the 10-stage adjustment of the alarm level which is also available for VN 115. For measuring the opacity differential, the sample flows of both header-suction-tube sections are fed to the turbid metric channel one after the other by closing the respective tube sections alternately by means of reed valves.
