These versatile temperature recorders accurately measure and record temperature in air, gases, liquids, powders, and semi-solid. Large, 3-digit LED display shows current temperature reading with an accuracy of and plusmn;2degF (1°>C). new high-temperature models 80050-20, -25, -30, and -35 record up to 1000°>F or 500°>C. Choose from models for °>F or °>C measurements. Front-panel switches let you Select Chart speeds (6-hour, 24-hour, 7-day, or 31-day) and temperature ranges (see table below). Chart speed accuracy is within and plusmn;1 percent . Chart rotation is selectable between single turn or continuous turn. Calibration is easy with inset potentiometer on front panel. Recorder can be used as a Free-Standing or Wall-Mount unit. Recorders are available in either 110 or 220 VAC versions. High-temperature models 80050-20, -25, -30, -35 include a 6-ft long high-temperature Type J thermocouple wire probe. Chart patterns for 6-hour rotation are available for all recorders. Call our application specialists for more information. New high-temperature models available battery backup assures 48 hours of normal operation during power interruption.