Signatrol has expanded its SL50 series of miniature portable data loggers with the introduction of the SL55 high temperature version.
The stainless steel SL55 logger measures 17mm in diameter and has a temperature measuring range from +15C to +140C.
Signatrol said the SL55 is suited to steriliser and autoclave validation.
Sampling frequency is programmable from 1s to 24hr and the unit can be set up to record either 4,000 temperature readings in high resolution mode (11 bit or 0.0625C) or 8,000 readings in low resolution mode (8 bit or 0.5C), with an accuracy of better than 0.5C over a 50C range.
The built in battery means that unit can be used and re-used many times over depending upon the application.
The SL50 series loggers are small enough to fit inside glass bottles, jars and food packs, and units are already being used in areas as diverse as vinegar distillation, cutlery washing, jam making, ready meal preparation and chocolate manufacture.
A special two-part food grade silicone rubber enclosure allows the data logger to be used in harsh or submerged applications.
Set up and data download is achieved using the SL55 button reader, which interfaces to the USB port of a PC.
The reader is compatible with Signatrol's Tempit-lite operating software which can be downloaded free of charge from its website.
The SL55 can be set up to record in a continuous first-in, first-out, or stop when full mode and data can be securely stored and retrieved at a later time for display in graphical format.
The software can be upgraded to Tempit-pro, which provides additional features such as data table, export data, e-mail graphs, snap to trace, automated MKT (Mean Kinetic Temperature) calculations and Fo sterilisation limit determination.
The software is used to set up all Signatrol's data loggers and enables different types of logger to be seamlessly integrated for different applications.
Each unit has the capability of storing specific manifest details and features a serial number etched into the base for traceability purposes.
The delayed start facility of up to 45 days allows the logger to be programmed to commence with a particular process or transport schedule.
Alternatively it can be set to start logging when triggered by an event, for instance, when a particular temperature threshold is exceeded.
