AlarmLog


For use with Liquid Nitrogen Storage refrigerators and Mechanical Freezers.


	The Alarm Log is a single channel, battery powered logger with audible alarm and a large clear display. The Alarm Log takes a measurement every 4 seconds even if your logging interval is 1 hour. It stores the worst case value measured during each logging interval. The time and date of each alarm event or settings change is recorded in a separate event log. An additional contact input may be used, for example, to generate an alarm if a freezer door is left open. Alarm Log connect together to create small multipoint systems and can also be used in systems. A full range of installation accessories make the system simple to install and easy to expand. The Alarm Log is simple to set up and alarm set points can be adjusted by the user at any time during operation. The Alarm Log uses a Pt100 Platinum Resistance Thermometer element to BS EN 60751 (IEC751): 1996, Class A, for temperature measurement.	Free Windows PC software displays, analyses, prints and archives your logged data. This is used in a four terminal configuration, with an accurately controlled reference current of 1 mA being passed via two terminals, and the resulting developed voltage measured across the other two terminals. By using a four terminal configuration, errors caused by connecting cable lengths can be completely eliminated. The standard probe can be used with cable lengths in excess of 30 metres without any measurable errors.