3M Personal Safety Division 3MTM EVM Series Environmental Monitor EVM Series Quick Start Guide
EVM and User Interface Indicators Display Softkey menus Backlight Up arrow key Altf key Enter key Particulate pump Right arrow key Down arrow key Left arrow key On/Off and Esc key Run/Stop key Turning On/Off and Navigating 1. Press key power on. (Following a splash/welcome screen, the Start screen will appear.) 2. Navigating to measurement screens - press keys. • Navigating to menu options - press keys. • To open a selected menu or to save settings - press 3.
Overview of running measurements Quick Help List: typical gas, particulates,or air quality measuring overview 1. Turn the EVM on and check the battery power. 2. Reset/Clear memory, if necessary (Start\File System menu). • This will clear out data history before your logging begins to ensure you have sufficient memory space. 3. Set-up your session parameters either in 3MTM Detection Management Software (DMS) or via the instrument’s Setup screen. 4. Verify the time and date is set correctly (Setup\Time-Date
Particulate Zero Calibration Prior to calibrating, ensure the impactors are well-greased with an applied thin-film of silicone grease. (Please see “Impactor Care” on page 10 or EVM series user manual.) 1. 2. 3. 4. Attach the Zero/HEPA filter and tubing into the turret. Rotate the turret to PM. Select Calibration from the Start screen and select PM (using up/down arrows). Press Cal softkey and then press Start softkey. Once level is stabilized, press Set softkey.
Volatile Organic Compounds (VOCs) VOCs, air pollution with carbon-containing chemicals, are measured using a Photoionization detector 10.6eV. The EVM is equipped to notify you when maintenance and cleaning is required for the PID sensor. A PID sensor error will appear indicating: (1) if the sensor needs to be cleaned, or (2) the lamp needs replacing. PID Zero Calibration The PID ppm zero calibration preferred method is to flush with Zero Grade Air. Alternatively, Nitrogen may be used.
Toxic Gases The following toxic gases table displays a quick overview of the ranges and the gases needed to perform zero and span calibrations. Type of Gas Carbon Monoxide (CO) Range Res. Zero cal gas Span cal gas 0 -1000 ppm 1 ppm nitrogen/pure air CO Chlorine (CL2) 0.0 - 20 ppm 0.1 ppm nitrogen/pure air CL2 Ethylene Oxide (EtO) 0.0 - 20 ppm 0.1 ppm nitrogen/pure air EtO Hydrogen Cyanide (HCN) 0.0 - 50 ppm 0.
Toxic and Carbon Dioxide Span Calibration To perform a span calibration with a specific toxic gas, please reference the toxic gas table. For the CO2 span calibration, the range (or span) should be a sizeable fraction of the selected full scale range of the gas. ;; NOTE: The range for the CO2 sensor is 0 to 5,000 ppm. For a span calibration, it is recommended to span cal to the value you will be measuring (i.e., 2,000 ppm). 1. Connect the appropriate gas, regulator, tubing and cal cap to the EVM. 2.
Temperature and Relative Humidity Logging/Viewing Temperature and/or Relative Humidity The Temperature and Relative Humidity readings are viewable in either the Temp-RH measurement screen or in the Composite screen. Temp/RH measurements Temp/RH measurement screen Particulate Air Flow Calibration For Airflow meter calibration, an accurate flow meter (such as a primary standard calibrator) and tubing is required. 1. 2. 3. 4. Attach the primary standard calibrator tubing to the air flow outlet.
Air Velocity To view air velocity measurements, perform or verify the following: 1. The air velocity probe is enabled in Setup\AUX\Air Velocity screen. 2. Connect the air velocity probe and attachment to the EVM unit to the auxiliary Air probe inlet. (See Air Probe inlets diagram in previous section, “Particulate Air Flow”.) 3. Turn Air Velocity Probe switch On. 4. Navigate to the Air Velocity measurement screen using keys. Connect AirProbe to the back housing (two inlets located near the air flow outlet.
Maintenance/Cleaning Sensors Locations The gas sensors are inserted, factory calibrated, and ready for usage upon delivery. (The diagram below is based on the EVM-7 model.) Occasionally , you may have to care for the sensors which will require removing and inserting. ;; NOTE: Verify the unit is off and unplugged from the power cord before removing or inserting sensors. 1. Remove the sensor bar (via the screws) and remove the manifold. Manifold 2.
Working with 3MTM Detection Management Software DMS Communicating 1. When the EVM is On, plug the USB cable into the EVM and plug the opposite end to the USB port of your computer. (Refer to illustration below.) Viewing your data In DMS once your files are downloaded via Download button, view the data in the panel layout view or reports by clicking on appropriate buttons. See an example of the panel layout page below.
Personal Safety Division 3M Detection Solutions ISO 9001 Registered Company ISO 17025 Accredited Calibration Lab 1060 Corporate Center Drive Oconomowoc, WI 53066 Customer Service: 262-567-9157 Toll Free: 800-245-0779 www.3M.com/detection 3M is a trademark of 3M Company, used under license in Canada. Please recycle. Printed in USA. © 2013 3M. All rights reserved. 074-301, Rev.D.
