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Terms starting with T
Definition
A pollutant of interest for a measurement.
Temperature compensation in air quality sensors, it means that the sensor’s readings are adjusted or corrected based on the current temperature. Temperature can affect the sensor’s electrical characteristics, and these changes can lead to inaccuracies in its measurements. Compensation involves using temperature sensors within the sensor package to monitor temperature changes and applying correction algorithms to account for these variations.
“Threshold Limit Values (TLV) are a set of workplace exposure limits recommended by the American Conference of Governmental Industrial Hygienists (ACGIH). TLVs are intended to guide and assist industrial hygienists, occupational health professionals, and employers in managing and controlling workplace exposures to various chemical substances and physical agents. Types of TLVs: ACGIH provides various types of TLVs, including Threshold Limit Value-Time-Weighted Average (TLV-TWA), Threshold Limit Value-Short-Term Exposure Limit (TLV-STEL), and Threshold Limit Value-Ceiling (TLV-C).
TLV-TWA: The TLV-TWA is the time-weighted average concentration of a substance to which most workers may be exposed during a typical workday.
TLV-STEL: The TLV-STEL is the concentration to which workers may be exposed for a short duration (usually 15 minutes) without experiencing adverse effects.
TLV-C: The TLV-C is the maximum allowable concentration that should not be exceeded at any time during a worker’s exposure.”
Time-Weighted Average (TWA) is a workplace exposure limit that represents the average concentration of a hazardous substance to which workers can be exposed over a specified time period, typically an 8-hour workday. The TWA is designed to protect workers from the potential health effects of repeated or continuous exposure to a substance during their work shifts.
