Hitachi CHROMASTER 5160 Instruction Manual page 740

Gas leak sensor............................. A sensor that can detect a leakage of organic solvent in
Liquid leak sensor.......................... A sensor that can detect a liquid leakage in the column
the column oven. Detection is made by means of the
vapor emitted from organic solvent when a leakage
occurs.
oven.
APPENDIX3 - 2