Low Level


LA100 Universal low level alarm for all low pressure vessels and refrigerator.


	Automatic monitoring of liquid nitrogen levels with visual and audible alarms. The Planer LA100 Liquid Nitrogen Low Level Alarm consists of a level sensor, monitor/alarm unit and a low output voltage power supply unit. The monitor/alarm unit continuously monitors the signal from the levelsensor and houses the audible and visual alarms. It can be fitted to the body, lid, neck or carrying handle of a liquid nitrogen container or can be mounted on a nearby wall or surface. The unit is supplied fitted with 'Velcro' pads but can be secured equally well to a solid surface with screws.The compact power supply unit is fully enclosed in a robust, moulded case. It provides a low voltage output (15V d.c.) through an interconnecting cable to the monitor/alarm unit. The level sensor is placed in the vessel at the required Low 'level, the monitor / alarm unit is fixed in place and the power supply unit is connected to the electrical mains.	When liquid nitrogen covers the level sensor the green Normal light is lit, however, when the liquid nitrogen level falls below that of the level sensor, the red alarm light flashes and the audible alarm bleeps. At the same time any suitably connected external alarm is activated. If, the level sensor for any reason should be damaged, short circuited or removed, the unit emits a constant audible tone.