EVM-7 Series Environmental Monitor Quick Start Guide
Contents
1. Personal Safety Division 3M EVM Series Environmental Monitor EVM Series Quick Start Guide EVM User Interface Indicators Display Softkey menus Backlight Up arrow key Altf key Particulate Right arrow key Down arrow key Left arrow ke On Off and Esc key Run Stop key Turning On Off and Navigating 1 Press 9 key power on Following a splash welcome screen the Start screen will appear 2 Navigating to measurement screens press lt p gt keys e Navigating to menu options press keys e To open a selected menu or to save settings press key 3 In the powered on mode press and hold Brey to power down the instrument Start Screen and Measurement Views You will visit the start screen frequently to access measurements setup calibration unit info and file system screens Press 4 to access the measurements screens select a menu option press keys 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 3M Detection Management Software DMS or via the instrument s Setup screen 4 Verify the time and date is set correc2. January 2009 48440125 LAURAS EVM 13122011162804 General Data Paneli j Xa Configure Temp Min Time 1 1 2009 1 39 09 PM Temp Max Time 1 1 2009 1 54 15 PM Ef f Humidity 1s Ave Panel Layout View Report View 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 4 13
3. ave or Cancel Disconnect components and return to the start screen via On Off Esc key PID Span Calibration Typically Isobutylene is used when the VOCs are unknown NOTE in order to measure specific VOCs you will want to use the relevant VOC for your calibrated gas source for a ppm ppb sensors Please refer to the manual for PID correction factor table Appendix for details 1 Connect Isobutylene regulator tubing and cal cap to the EVM 2 Follow steps 2 4 above in PID Zero Cal section but select Span softkey instep 3 Logging VOCs 1 From the start screen or any measurement screen press key To view VOCs measurements select either the Gas or Composite screen by pressing lt p gt keys from the start screen 2 Press to stop logging See Viewing logged results to access past sessions Run icon Gas measurement screen PID sensor measurement 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 Range Zero Cal Span cal gas gas Hydrogen Sulfide H S 0 500 ppm nitrogen pure air Nitrogen Dioxide NO 0 0 50 ppm 0 1 ppm nitrogen pure air Nitric Oxide NO 0 0 100 ppm 0 1 ppm nitrogen pure air Oxygen 0 0 0 30 0 1 nitrogen Room air 1 0 L min flow rate span 20 9 Sulphur Dioxide SO 0 0 50 ppm 0 1 ppm nitrogen pure air Carbon Dioxide Gas Similar to toxi
4. c gases the carbon dioxide sensor should be calibrated prior to logging Toxic and Carbon Dioxide Zero Calibration Depending on the gas of interest the toxic zero calibration is performed with the gas indicated in the table above The CO sensor requires a calibration gas a regulator with at least 1 0 Liter minute flow rate and a hose tubing Nitrogen is the recommended gas for a Zero calibrating If you are not applying a gas start at step 2 1 Connect the appropriate gas pure air regulator tubing and cal cup to the EVM 2 Select Calibration from the Start screen and choose specific toxic using Ay keys 3 Press Cal softkey and then press Zero softkey Once level is stabilized press Set softkey Allow at least 90 seconds to stabilize 4 Press Save or Cancel softkey to store the process Disconnect components and return to the start screen via On Off Esc key Tubing Cal cup adapter Regulator al gas source Toxic and Carbon Dioxide Span Calibration To perform a span calibration with a specific toxic gas please reference the toxic gas table For the CO 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 CO 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
5. ity 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 See air flow diagram previous page Air velocity measurement screen Viewing Logged sessions past sessions Once you have logged data and stopped the session the data is stored under the past session summary menu Optional you can view the data in charts graphs when downloaded to DMS 1 Navigate to Start Past Session screen 2 Select the File field and press the File softkey Past Session Load File screen will display all of the logged files Press Enter key to change between different file views Select the appropriate file by using up down arrows and press the Load softkey Press Detail softkey to view data 5 Press lt keys to view summary data Repeat as necessary Rw ession Run Time Summary session MAX STEL 0 803 TWA 0 113 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 Remove the sensor bar via the screws and remove the manifold faa anifold Sensor bar removal and location
6. key to end the logged session See Viewing logged results to view past sessions 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 Attach the primary standard calibrator tubing to the air flow outlet 2 Navigate to the Setup Calibration Flow RT rate screen 3 Press the Cal softkey and then press Start softkey 4 Adjust the flow rate using the up and down arrow keys so the primary standard calibrator is 1 67 LPM and then confirm by pressing the Save softkey NOTE It should be noted that in order for the impactors to work properly the flow rate must be adjusted to 1 67 LPM AirProbe inlet with attachment Air Flow Outlet To calibrate connect primary standard calibrator with tubing 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 3 Turn Air Veloc
7. late screen Select profile field and then press Edit softkey Add Factor using up down arrows Press On OFF Esc key twice to return to start screen Logging Particulates 1 Before logging particulates ensure the impactors are clean and well greased 2 From the start screen or any measurement screen press key 3 Press key to end the logged session See Viewing logged results to access past sessions 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 For best response time it is recommended to set the flow rate at 1 LPM NOTE Please refer to the EVM series manual for more information on the PID ppm ppb sensors 1 Connect the Zero Grade Air tubing and cal cup to the EVM Please skip this step if you are not applying a gas 2 Select Calibration from the Start screen and select PID using up down arrows 3 Press Cal softkey and then press Zero softkey Once level is stabilized press Set softkey Typically takes 60 seconds to stabilize 4 Once level has been set you can press S
8. of sensors are displayed below e When removing inserting align the socket pins to the circuit board accordingly Sensor bar Remove screw 1 amp 2 and lift off cover Screw 1 Screw 2 PID sensor Toxic sensor CO sensor Pa Care and Particulates The impactor requires periodic greasing and cleaning for particulate measuring only 1 2 3 4 Remove the turret red housing cover over the impactor by removing the right and left screw with the supplied allen wrench stored behind the access door Remove all debris dust with a Q tip cotton Wipe a very thin film of silicone grease onto the metal plates using a Q tip cotton Re attach by placing the turret cover over the housing and tighten screws Thin layer of silicone is applied to a clean impactor Example of accumulated dust will form into pyramid Working with 3M 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 panel layout view or reports by clicking on appropriate buttons See an example of the panel layout page below Sees SBIS REA BOM 2000044 Date Time 7 9 41 44 45 45 9 50 51 52 53 55 57 58 59 o 13400 1 January 2009 13 00 1
9. ss Cal softkey and then press Start softkey Once level is stabilized press Set softkey 4 Once level has been set you can press Save or Cancel Please refer to Chapter 4 of EVM series manual for more information NOTE Once saved the instrument will apply the zero calibration to all profiles The zero calibration is stored in the History screen and a calibration Verify can be performed to ensure no drifting ZS Zero HEPA filter example Used for particulate zero cal Tubing and vent opening Insert tubing into the impactor of the labeled 2 5 vent opening Turret Turn the turret so appears on the display of the EVM Particulate Advanced Calibration Gravimetric Gravimetric Calibration Overview 1 Reset the gravimetric and volume accumulators 2 Insert a new sealed gravimetric cassette 3 Measure in the specific location for approximately four to eight hours 4 Record the value displayed in the gravimetric accumulator field displayed in the particulate screen This value is used in conjunction with the weight of the measured dust in the cassette 5 Remove the gravimetric cassette and weigh the filtered contents Typically send to a lab for results 6 To determine the correction factor calculate the ratio between the particulate mass value and the weight from the gravimetric filter lab analysis Ratio true weight EVM gravimetric displayed value 7 Enter user correction value Setup Particu
10. the EVM 2 Follow steps 2 4 above in Toxic Zero Calibration section but select Span softkey in step 3 NOTE For Oxygen span calibration the typical span is 20 9 Logging Toxic Gases or Carbon Dioxide 1 From the Start screen or any Measurement screen press QD key e To view gas measurements select either the Gas or Composite screens by pressing lt from the start screen when Setup is selected 2 Press to stop logging Viewing logged results to access past sessions Run Icon CO value Composite Toxic CO __ Measurement screen value Particulate advanced calibration Gravimetric filtering Gravimetric Calibration Overview 1 Reset the gravimetric and volume accumulators 2 Insert a new sealed gravimetric cassette 3 Measure in the specific location for approximately four to eight hours 4 Notate the value displayed in the gravimetric accumulator field displayed in the particulate screen This value is used in conjunction with the weight of the measured dust in the cassette 5 Remove the gravimetric cassette and weigh the filtered contents Typically sent to a lab for results 6 To determine the correction factor calculate the ratio between the particulate mass value and the weight from the gravimetric filter lab analysis Measuring particulates 1 From the start screen or any measurement screen press the key Prior to logging a 5 second count down appears 2 Press
11. tly Setup Time Date menu 5 Calibrate each sensor parameter via the Calibration screen 6 Place the EVM in a specific location for area monitoring 7 Press ine key to Start logging 8 When you are ready to end your logging press key 9 Review your results either on the instrument via the File System screen or download to DMS for further analysis graphs charts saving and printing Particulate Measurements Particulate setup 1 To change particulate settings select Setup Particulate 2 Particulate screen appears and includes the following adjustable fields e Particulate field enable disable pump collection Profile field applying a correction factor and Gravimetric mass volume fields displays accumulated mass and air volume These fields are reset when performing gravimetric sampling Adjusting the Impactor To adjust the impactor turn the turret until one of the following is selected PM2 5 PM4 10 or PM all dust ranging from 0 100 example below illustrates the impactor set to PM 2 5 Align to impactor arrow 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 Attach the Zero HEPA filter and tubing into the turret Rotate the turret to PM 2 Select Calibration from the Start screen and select PM using up down arrows 3 Pre
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