The Solinst Levelogger Edge is more stable, more reliable and more capable in extreme pressure and temperature deployments. The Hastelloy is Solinst's most rugged sensor, able to withstand 2 times its specified pressure range without permanent damage. The Edge will resist corrosion longer with an upgraded Titanium based PVD coating applied to the 7/8" x 6.25" stainless steel housing. The Edge is a self contained automatic water level and temperature recording device combining a Hastelloy pressure sensor, temperature thermistor, and 10-year lithium battery to deliver superior logging performance. The Levelogger Edge has a memory capacity of 40,000 temperature and water level data points, or up to 120,000 using the new compression algorithm in linear sampling mode. The Solinst Levelogger Edge maintains the high resolution of previous Leveloggers, with an accuracy of 0.05% Full Scale (FS). Data compensation has been simplified, allowing for multiple data files to be barometrically compensated at once. Communication speed between the Levelogger Edge and the PC has increased with the new Optical Reader, making downloading data even faster.