Recorders, Environmental, Air Humidity/Pressure/Temperature

Definition : Environmental recorders designed primarily for long-term storing information regarding the air humidity and temperature and also the atmospheric pressure. These recorders typically consist of a portable electronic unit including a mechanism and sensors for periodically sampling at a pre-established rate (e.g., 5, 30, 600 seconds): (1) the air temperature sensors (i.e., thermometers) that measure in a wide range of temperatures (e.g., from -30 to 100 degrees Celsius/-22 to 212 degrees Fahrenheit), (2) relative humidity in the air using appropriate sensors in a range typically from 5 to 95percent, and (3) atmospheric pressure up to 1100 hPa/825 mmHg. The data may be recorded in a solid state security card (SD card) or in an internal memory; the data is assessed later in an external computer using a dedicated software. Environmental recorders that combine air temperature and humidity and also atmospheric pressure recording may be intended for use in indoor, outdoor, or in both conditions. Some recorders using a mechanical or electromechanical mechanism to print the data waveforms on a data sheet mounted on a move a rotatory cylinder (i.e., chart recorders) are also available.

Entry Terms : "Monitors, Environmental, Humidity/Pressure/Temperature"

UMDC code : 33845

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