x Table of Contents

Figure 4-21: Span Calibration ............................................. 59

Figure 4-22: Saved Calibration screen ............................... 60

Figure 4-23: Selecting a calibration sensor ........................ 61

Figure 4-24: Calibration CO2 ready screen ........................ 61

Figure 4-25: Setting CO

2

Span Cal screen ......................... 62

Figure 4-26: Saved Calibration ........................................... 62

Figure 4-27: Selecting PID sensor for calibration process ......................................................... 63

Figure 4-28: Calibration mode screen ................................ 64

Figure 4-29: PID Calibration Span soft key ........................ 65

Figure 4-30: Saved Calibration screen ............................... 66

Figure 4-31: Temperature calibration ................................. 67

Figure 4-32: Calibration History screen .............................. 67

Figure 4-33: Calibrate offset verify screen for

PID sensor ...................................................................... 68

Figure 4-34: Calibrating PID ............................................... 68

Figure 5-1: Quick help list for running a study .................... 71

Figure 5-2: Sample summary data from DMS reporting ..... 72

Figure 5-3: Sample time history data (or logged data) chart ................................................................................ 73

Figure 5-4: Composite measurement screen in run mode ........................................................................ 73

Figure 5-5: Example of measurement soft key menus ....... 75

Figure 5-6: Particulate Measurement screen ..................... 76

Figure 5-7: Selecting a measurement calculation .............. 77

Figure 5-8: RH and temperature measurement screen ...... 78

Figure 5-9: Gas measurement screen ................................ 79

Figure 5-10: Composite measurement screen ................... 80

Figure 5-11: Attaching Air Probe and measuring

Air velocity ...................................................................... 81

Figure 5-12: Details of the composite measurement screen ............................................................................. 82

Figure 5-13: Selecting Trend soft key ................................. 83

Figure 5-14: Trend Screen for PM (Dust) ........................... 84

Figure 5-15: Past session screen ....................................... 84

Figure 5-16: Past Session with Files selected .................... 85

Figure 5-17: Summary screen of a past session ................ 86

Figure 5-18: Delete session message ................................ 87

Figure 5-19: Delete all sessions message .......................... 87

Figure 5-20: File Systems properties screen ...................... 88

Figure 5-21: Viewing estimated run time ............................ 89

Figure 6: Communicating with the EVM and DMS ............. 91

Figure 6-1: DMS Start page and Setup/Download options ............................................................................ 92

Figure 6-2: EVM and downloading ..................................... 93

Figure 6-3: Data finder page ............................................... 94

Figure 6-4: Charts and Graphs (panels) ............................. 95

Figure 6-5: EVM data in a report format ............................. 96

Figure 6-6: Customizing DMS reports ................................ 97

Figure 6-7: Saving and sending EVM setups ..................... 98

Figure 6-8: General EVM setups ........................................ 99

Figure 6-9: Logging EVM setups ...................................... 101

Figure 6-10: EVM Timed-Run Auto-Run setting ............... 102

Figure 6-11: EVM Auto-Run with Date setting .................. 103

Figure 6-12: EVM Auto-Run with Day of Week setting ..... 103

Figure 6-13: EVM Auto-Run with Day of Week setting ..... 104

Figure 6-14: EVM Triggering setup ................................... 105

Figure 6-15: EVM Auto-Run with Day of Week ................ 106

Figure 7-1: Removing and inserting PID sensor ............... 110

Figure 7-2: Removing intelligent-sensor casing with PID ........................................................................ 111

Figure 7-3: Removing the lamp with removal tool ............ 112

Figure 7-4: Remove/insert PID sensor with lamp

& pellet .......................................................................... 112

Figure 7-5: PID sensor cleaning kit ................................... 112

Figure 7-6: Fitting/Inserting the lamp and pellet ............... 113

Figure 7-7: Optical engine and cleaning ........................... 114

Figure 7-8: Cleaning the optical engine ............................ 115

Figure 7-9: When to clean impactors ................................ 117

Figure 7-10: Gravimetric cassette and filter paper maintenance ................................................................. 117

List of Tables

Table 2-1: Keypad/user interface explained ....................... 13

Table 2-2: Indicators (i.e., run, stop, battery, Altf ............... 14

Table 3-1: Display settings explained ................................. 22

Table 3-2: Logged intervals and selecting logged measurements ................................................................ 23

Table 3-3: Digital out/Logic settings .................................... 31

Table 4-1: Cross-sensitivity table of interfering gas ............ 55

Table 4-2: Gas calibration soft keys explained ................... 58

Table 5-1: Unit abbreviations .............................................. 74

Table 5-2: Measurement soft keys explained ..................... 75

Table 5-3: Measurement values explained ......................... 78

Table 5-4: Past session files soft keys explained ............... 85

EVM Series User Manual

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1 Introduction

Table of Contents

CHAPTER

1

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.

Caution

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.

EVM Series User Manual