EVM 7 Environmental Monitor

Simultaneous Measurement of Particulate and Gas Concentrations

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  • Specifications
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The 3M Detection Solutions EVM-7 environmental monitor simultaneously measures particulates, volatile organic compounds (VOCs) with PID, toxic gas, carbon dioxide, relative humidity, temperature, and air velocity. Use the EVM-7 for worksite monitoring, industrial hygiene surveys, air quality assessment, VOC screening and monitoring, military site compliance, and regulatory compliance.

  • Base model with Particulate sensor, PID (ppm) sensor, CO2 sensor, (2) 37 mm gravimetric filter cassettes and standard accessories
  • Simultaneous measurement of particulate and CO2, VOC, Temperature and Relative Humidity concentrations Dial-in rotary impactor
  • 90 degree light scattering photometer
  • Built-in sampling pump for gravimetric analysis
  • Simultaneously measures particulate and gas concentrations
    • Reduces the need for multiple instruments
    • Measures VOCs (with ppm-level PID — ppb-level PID optional), toxic gas, carbon dioxide, relative humidity, temperature, and air velocity (with Air Probe-10 accessory)
    • ppb-level VOC measurements can be converted to µg/m3 in DMS Software for comparison to LEED TVOC limit 
  • Dial-in rotary impactor
    Twist and click selection of PM2.5, PM4, PM10, or TSP* without disassembly and external cyclones
  • 90-degree light scattering photometer
    Provides real-time particulate measurement and display 
  • Built-in compensating sample pump
    Simultaneous gravimetric sampling on a 25 or 37-mm internal filter cassette
  • Smart auto-recognized toxic gas sensors
  • Displays Level, Minimum, Maximum, Average, STEL, and TWA in 6 languages
  • Trend graphing for all parameters
    Carbon dioxide trending algorithms for calculation of room air exchange rates (with new Detection Management Software [DMS] ) 
Menu-driven user interface with 10 push buttons/4 soft keys
Time history data logging
Temperature air exchange rates and dew
Display languages:  English, French, German, Italian, Portuguese and Spanish
User Interface: 10 pushbuttons and 4 softkeys, menu driven
Display Type:  Transreflective 128 X 64 LCD with backlighting
Software Compatibility:  QuestSuite™ Professional II
Standards:  CE Mark and RoHS compliant
Particulate Impactors Size Fractions:  PM2.5, PM4, PM10 or TSP (within the instrument’s measurement range)
Flow Rate:  1.67 L/min
Display Date
Measurements:  Level, Minimum, Maximum, Average, Short-Term Exposure Level (STEL), Time Weighted Average (TWA)
Real-Time Measurement:  Once per second display update rate
Time History Data Logging Intervals:  Seconds: 1, 5, 15, 30 / Minutes: 1, 5, 10, 15, 30, 60
Trend Graphing Intervals for All Parameters:  Minutes: 1.5, 3, 15 / Hours: 1.5, 3, 8, 12, 24
Status Indicators:  Battery, Run, Stop, Overload and Under Range
Averaging Time:  1 to 30 seconds
Physical Characteristics
Size:  19 cm X 19 cm X 7 cm (7.5” X 7.5” X 2.75”)
Weight:  1.3 kg (2.9 lb)
Housing:  Static dissipative ABS Polycarbonate housing
Tripod Mount:  Standard photographic mount on bottom, 1/4" - 20 screw heads
Operating Conditions
Temperature Range:  0 °C to 50 °C (32 °F - 122 °F)
Pressure Range:  65 kPa to 108 kPa
Relative Humidity Range:  10% to 90% non-condensing
Storage Conditions
Temperature:  -20 °C to 60 °C (-4 °F to 140 °F)
Humidity:  0% to 95% RH, non-condensing
Electrical Characteristics
Intelligent Sensors:  Auto-detectable when inserted at power-off mode
Battery Pack:  Rechargeable lithium-ion
Battery Life:  Minimum of 8 hours under continuous operation
External DC Power Output:  10 to 16 Volt power inlet (nominal 12V DC) 1.5A
Power Adapter:  Universal AC adapter 100 to 240 Volt AC, 50-60 Hz


  • Worksite monitoring 
  • Industrial hygiene surveys 
  • Military site evaluation 
  • Aircraft and train environment sampling 
  • Construction/mining site monitoring 
  • Engineering studies 
  • Industrial fence line monitoring 
  • Remediation sampling 
  • IAQ walk-through and stationary studies 
  • Air quality assessment 
  • VOC screening and monitoring 
  • Regulatory compliance
  • Time-history compliance
  • Toxicology and epidemiology studies