Introduction
Table of Contents
EVM Series User Manual
Introduction
The EPA (Environmental Protection Agency) conducted a study over the last 25 years (1975-2000) and
determined that 107 measurable air pollutants, specifically carcinogens, exist in working environments.
Combined with the advent of closed windows, modern office buildings and various cleaning solvents,
the outcome has been energy efficient buildings and homes which contain levels of carcinogens. At high
levels, this is known as “Sick Building syndrome” and can cause acute effects such as headaches,
eye/nose/throat irritation, dry cough or itchy skin, fatigue, and trouble concentrating just to name a few.
Area monitoring or spot checking for high levels of pollutants, such as particulates, VOCs, and toxics,
should be a common practice to ensure good indoor air quality exists in your environment. If poor air
quality is determined, engineering controls such as proper air ventilation and the removal of toxic gases,
would be put into place in order to provide an adequate working/living environment.
The EVM is equipped to measure several different airborne containments or air pollutant applications
including:
Particulate matter sampling (dust monitoring)
Gas sampling
Temperature sampling
Relative Humidity and Dew Point sampling
To get you started quickly with the EVM, the first chapter is dedicated to introducing basic particulate
matter and toxic gas information. The subsequent chapters will guide you through setting up the EVM,
running studies, and assessing your results with easy to follow steps and illustrations.
The EVM is intended to measure gases that are potentially dangerous to human health. To help
ensure worker safety through the proper use of your unit, it is important that you not only read but
also understand the contents of this manual. Familiarize yourself with the unit before using it in a
potentially hazardous situation.
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