User Manual - Temperature & Process Instruments, Inc.
Contents
1. Page 11 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 4 SENSORS TECHNICAL The great versatility of the AQ Expert Air Quality analyzer is partly due to the large number of sensors available within a single analyzer These sensors are primarily gas sensors and can be grouped into four categories based on their principle of operation Six 6 electrochemical gas sensors One 1 NDIR infrared gas sensors CO2 One 1 Photo ionization detector PID gas sensor VOC Non gas sensors Temperature Velocity Humidity Pressure and Barometric pressure sensors PONS Note When Ozone sensor is installed the AQ Expert can include OR SO The unit can NOT have all three 3 sensors SOz together simulatenously The main section of the monitor that houses all the electrochemical NDIR and PID gas sensors battery pack and PC board On the face of the unit the external sampling system or Ambient Temperature Relative Humidity and Barometric Pressure The figure below shows the location of the gas sensors on their housing eu 0 fe SENSOR aN E T y i 7 NG 9 F yY CO KO voc los i o oS NO FN XT Fi 50 i 062 9 HS a u 25 3 O T Page 12 of 38 AQ EXPERT Instruction am2. appear at the bottom empty tags show the word empty To print the contents of a specific tag use the UP DOWN keys to move the arrow to the desired tag and press OK If you wish to print the entire monitor s stored data in sequence move the arrow to the entry ALL TAGS and press OK CONFIGURE RECORD This option allows the user to add delete or change the order of the parameters that appear on the paper print out EDIT CUSTOMER NAME This will display a screen where you can change the information printed at the top of each printout Usually the customer s name or the operator s name appears here To edit this information use the UP DOWN LEFT RIGHT keys to navigate around the keyboard and press OK to select the letter or number For lower case letters highlight shift and press OK for symbols highlight sym and press OK The arrows in the corner will move the cursor forward or backward through the name EDIT HEADER INFO E INSTRUMENT AQ EXPERT CALIBRATION RECORD This option will print a record of each sensor s last calibration including the date of calibration and span gas value used PAPER FEED This toggles the printer s motor on and off advancing the paper out the top of the printer as needed The motor will not turn on if there is no paper present MOBILE PRINTER The WIRELESS PRINTERS screen will appear You can disconnect your current Bluetooth connection and connect to another printer in range
3. E INSTRUMENTS INSTRUCTION amp OPERATIONS MANUAL AQ EXPERT PORTABLE MULTIFUNCTIONAL INDOOR AIR QUALITY MONITOR _nissions Instruments International LLC 402 Middletown Blvd Suite 216 Langhorne PA USA 19047 Phone 215 750 1212 Fax 215 750 1399 Info E Inst com www E Inst com of 76 70 30 ee D P AQ EXPERT Instruction amp Operations Manual Version 1 04 TABLE OF CONTENTS UEM 4 INTRODUCTION EEs 4 edicere 9 BASIC INSTRUMENT esses ener nnne nne nennen 9 amp lligizs toe 11 POWER REQUIPEIEIN ibas dise dn e UU Ud E in atit d UR DRM 11 CHAPTER m 12 SENSORS TEGHBNIORL p bte tercie vibes tese 12 eae 16 AQ EXPERT SETUP PM MEME REE 16 eldiz idos UTERE 18 INTERNAL DATA STORAGE sio metier tati uta PRSE eenean esa CRM RS Heo 18 CHARTER Tuas ad tenu ui bd Mi e 20 WIRELESS REMOTE PRINTER 20 22 CALIBRATION ZERO amp SPAN sse 22 CHAPTER ee
4. Press OK to Continue Device 1 001122334455 When you have connected successfully the printer s green status light will turn on Pressing the PRINT key will now display the PRINT MENU The PRINT MENU allows the user to print test records struments Print Test Record Start Test Log Log Interval 60s Print Buffer Configure Record Serial 000000 Company Name TEST RECORD Edit Customer Name Calibration Record Paper Feed On Off Mobile Printer AUG 1 13 12 45 00 XX X 5 T ambient XXX F RH XX X 5 DPt XXX F PRINT TEST RECORD This option will print a test record of the current air quality parameters BP XXXX psi Oxygen XX X PRINT TEST LOG This option begins a log of the following air quality be E o parameters CO2 Temperature RH Wet Bulb Dew Point Barometric NOs i PPM Pressure Oxygen Carbon Monoxide VOCs etc 802 XXXX PPM H2S XXXX PPM LOG INTERVAL This selects the interval between each log entry The XXX PPM 5 VOC XXX PPM interval can be set between 1 and 60 seconds PRINT BUFFER This option is used to print data stored in the monitor s memory Each line corresponds to one storage tag Tags containing data show an icon next to the index number When you scroll up and down the date mm dd and time hh mm when the data was stored Page 20 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04
5. gas concentration is measured electro optically by its absorption of a specific wavelength in the infrared IR NDIR SENSOR Gas Molecule IR Datactor Lan p tel Reflector optional Filter Sample Chamber The AQ Expert Air Quality Monitor is equipped with one standard NDIR infrared sensor capable of CO measurement standard range 0 5000 ppm This infrared sensor can be substituted for higher CO ranges The NDIR options have the following specifications ACCURACY CARBON DIOXIDE 0 5000 ppm 296 of reading CO 10 ppm CARBON DIOXIDE 0 0 20 0 3 reading CO 3 PHOTO IONIZATION DETECTOR PID Photo ionization detectors are the most common method to measure volatile organic compounds VOCs and other gases in indoor air quality in concentrations in parts per billion PPB and parts per million PPM Page 14 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 Positive bias electrode Detector inlet Ss UV Lamp Vapor enters the PID Amplifier Negative collector electrode the lon current is collected x amplified and converted to ppm readings on the digital display Vapor exits the PID detector essentially unchanged The PID options have the following specifications ACCURACY VOCs 0 20 ppm 10 of reading 4 NON GAS SENSORS A Ambient Temperature sensor This is a solid state sensor located on the front
6. HR 26 secte c 26 CHAPTER m c C 31 E U 31 CHAPTER 1 R 33 AQ EXPER TOP TIONS cupio ND sa RDUM 33 aaa a eb MM ME NEM O 35 MODEL AQ EXPERT 5 teinte 35 xcd HEP 37 xime zNSIOIISP M 37 Page 2 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 LIST OF ABBREVIATIONS PARAMETERS CO Carbon Dioxide NDIR measurement CO Carbon Monoxide a toxic gas Ta Ambient room Air Temperature RH Percentage of Relative Humidity DPt Dew Point Temperature WBT Wet Bulb Temperature Ozone VOCs Volatile Organic Compounds Isobutylene BP Barometric Pressure H2S Hydrogen Sulfide a toxic gas NO Nitric Oxide a toxic gas Nitrogen Dioxide a toxic gas NOx Oxides of Nitrogen toxic mixture of nitric oxide and nitrogen dioxide gases 50 Sulfur Dioxide a toxic gas VEL Air Gas Velocity measurement with pitot tube T1 Thermocouple Type K Temperature T1 Input T2 Thermocouple Type K Temperature T2 Input BAT Battery Life Voltage NA Parameter Not Available UNITS PPM Parts of pollutant per million volume basis dry PPB Parts of pollutant per billion volume basis dry F Temperature Measurement in Fahrenheit C Temperature Measurement in Celsius WC Inches o
7. Kit consisting of ZERO AIR amp regulator for proper calibration of the AQ Expert part AQCAL If you are not using ZERO AIR it is important that at the moment of zeroing the ambient environment of the monitor is clean from traces of carbon monoxide or other toxic gases If in doubt of the ambient air please use the ZERO AIR cylinder ZERO AIR IS NEEDED FOR CO ZEROING When you turn the instrument on wait at least two 2 minutes to allow the analyzer to warm up before carrying out the zero countdown Select CALIB key to go into Calibration Mode ZERO GAS SENSORS This will set the zero point of CO NO SOs H2S VOCs Pressure amp Velocity values Connect Cylinder to the SAMPLE IN connection of the monitor using the optional accessories included in the CALIBATION KIT Part AQCAL See CALIBRATION APPARATUS section below for how to connect Have the cursor reverse color point to the line Zero Gas Sensors Press the OK key to execute a zero cycle of all the gas sensors This procedure should last 20 seconds At the end of the zero period the AQ Expert reads the output of all gas sensors and sets them all to zero with the exception of the Oxygen O2 that it sets to 20 9 and If no error messages appear at the end of the countdown proceed with your measurements ZERO This will set the zero point of You must use cylinder of ZERO AIR for ZERO CALIBRATION Connect Cylinder to the SAMPLE
8. Page 21 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 8 ZERO amp SPAN CALIBRATION Every instrument must occasionally be calibrated against some known value of a parameter in order to make sure that its accuracy has not deteriorated Instrument calibration requires two steps The first step is to zero the analyzer in a clean ambient temperature environment The second step uses certified soan gas cylinders of known concentration to carry out a span calibration of the gas sensors The CALIBRATION MENU lets you set span calibration values for each sensor and performs all sensor calibrations The CALIBRATION MENU is shown below A brief explanation of the parameters shown follows below CALIBRATION ZERO GAS SENSORS This will set the zero point of NO zero Gas Sensors SOs H2S VOCs Pressure amp Velocity values Zero 2 Sensor ZERO SENSOR This will set the zero point of Zero Thermocouples Zero Errors ZERO THERMOCOUPLES This zeros the two thermocouple inputs Zero Time 60sec T1 amp T2 Span Time 120sec Span Lockout Sensor History Span CO PPM ZERO TIME This is the countdown time for the zero procedure Span H2 xxxx PPM The zero cycle time should set at 20 60 seconds Span CO2 xxxx PPM ZERO ERRORS This will display a list of sensors that were out of the monitor s acceptable range during the last zero countdown
9. Span NO xxxx PPM SPAN TIME When carrying out a span calibration you must iu introduce the span gas for an appropriate amount of time before the Span NO2 xxxx PPM analyzer executes the span calibration This setting which is the Span 502 xxxx PPM same for all sensors controls this time interval The span time is Span H28 xxxx PPM indicated in seconds Span Ozone xxxx PPB Span VOC xxxx PPB SPAN LOCKOUT This controls access to the remaining span calibration menu options Span lockout prevents accidental or Span Velocity xx mistaken calibrations Span lockout is enabled and disabled by Span AmbT xx x entering a 4 digit code Span BP mbar Span RH SENSOR HISTORY The date that each sensor was installed is Cal Thermcplel xxxF displayed along with the date the sensor was last calibrated and the span gas concentration used Cal Thermcple2 xxxF SPAN The remaining lines of the CALIBRATION MENU are used for carrying out span calibrations of the CO CO2 NO NO2 SO2 H2S Ozone VOCs and Velocity sensors For detailed use of these settings please refer below Page 22 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 A ZEROING THE AQ EXPERT If you have a gas cylinder of ZERO AIR you can use this for Zeroing ALL of the gas sensors in the AQ Expert If you do not have this cylinder please contact E Instruments to purchase our optional Calibration
10. which are located inside the analyzer connected to the Sample In input Operating the instrument without the filters will put the monitor at high risk to damage the pump and sensors These filters should be replaced as needed 3 Do not block the exhaust in the back of the instrument 4 Do not expose the monitor to extreme temperatures outside the stated range in Appendix A 5 is recommended to use single span calibration gas mixtures preferably with balance nitrogen when calibrating the sensors for the most precise calibrations Page 6 of 38 instruments 2 AQ EXPERT Instruction amp Operations Manual Version 1 04 6 It is recommended to keep the AQ Expert horizontal using the included swivel handle as its stand with the LCD display facing the user 7 analyzer enclosure is ever unscrewed and taken apart take caution of not over tightening the screws that hold the two main enclosure pieces together 8 Do not store or operate in dusty dirty areas 9 Do not use instruments in the rain or High moisture areas to prevent water droplets on the external Temp RH Pressure Sensor See Photo C 10 DO NOT LIFT OR HANDLE THE INSTRUMENT BY THE BLACK EXTERNAL TEMP RH PRESSURE SENSOR HOUSING See Photo C PHOTO I SAMPLE IN Page 7 of 38 A Q EXPERT Instruction amp Operations Manual Version 1 04 F ZERO ERRORS amp BASIC TROUBLESHOOTING ZERO ERRORS Channel Possible Causes R
11. is fed properly and as efficiently as possible connect a bypass flow meter at the outlet Adjust the regulator to maintain approximately 500 cc min of flow at the outlet You must not feed gas to the AQ EXPERT under pressure and you must not starve the AQ EXPERT s pump for gas When feeding the gas you must maintain a reasonably constant pressure near ambient pressure Page 24 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 D CALIBRATION PROCEDURE The following page illustrates the sequence of key strokes to carry out a span calibration of the AQ Expert It is assumed that the instrument has been zeroed and there have been no error messages Electrochemical Gas amp PID VOC Sensors 1 Turn the AQ Expert on and press OK to perform a zero Allow the instrument to warm up for 15 minutes and repeat the zero 2 Connect the outlet from the tee fitting of the gas calibration fixture to the connector on the front of the analyzer labeled SAMPLE IN using the set up shown on the following figure Press the key labeled CALIB to enter the calibration menu Scroll down to the SPAN TIME and set the value to 20 seconds Scroll down to the sensor to be calibrated If the calibration lock is on enter the password 1315 Use the arrow keys to enter the span value printed on the calibration cylinder Press OK Turn on the gas flow and observe gas readings If the gas reading for the sensor being calibrated does not
12. panel of the analyzer The ambient temperature is displayed on the MEASURE screen in either F or C The dew point is calculated from the ambient temperature and relative humidity The dew point is displayed on the Small and Large Font MEASURE screens as DPt B Humidity sensor This is a solid state sensor located on the front panel of the analyzer The relative humidity is displayed on the MEASURE screen in RH 96 Relative Humidity The Wet Bulb is calculated from the ambient temperature relative humidity and barometric pressure The wet bulb is displayed on the Large Font MEASURE screen only as WBT C Barometric Pressure sensor This is a solid state sensor located at the front panel of the analyzer The ambient temperature is displayed on the MEASURE screen The barometric pressure is displayed on the Small and Large Font MEASURE screens as BP D External temperature sensor T1 amp T2 The thermocouple is located at the tip of any optional or separate Type K thermocouple probe and or wire The T1 amp T2 temperature measurements are displayed on the Large Font MEASURE screen only as T1 T2 E Differential Pressure Air Velocity sensor If the monitor comes with the air velocity option optional separate S type pitot tube and tubing the internal pressure sensor is a very low range 0 1 PSI pressure sensor The Velocity measurements are displayed on the Large Font MEASURE screen only as VEL Page 15 of 38 AQ EXPERT Ins
13. 00 ppm AQ 25 100 H2S Sensor 0 100 ppm AQ 03 5 Sensor 0 5 ppm AQ CO2 5000 NDIR CO Sensor 0 5000 ppm AQ CO2 20 NDIR CO Sensor 0 20 96 AQ VOC 20 PID VOC Sensor 0 20 ppm AQ VOC 200 PID VOC Sensor 0 200 ppm E852010 Rechargeable Battery Pack E852020 AC Charger 100 240VAC 50 60Hz with 12V Output E852130 Bluetooth Adapter Dongle AQCAL Calibration KIT ZERO AIR Cylinder w Regulator AQAIR Replacement ZERO AIR Cylinder ONLY E858140 Vinyl Carrying Case with Shoulder Strap E852110 Remote Bluetooth Wireless Printer w AC Charger AACSF22 12 Probe and 10 hose Page 37 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 E INSTRUMENTS asns Instruments International LLC 402 Middletown Blvd Suite 216 Langhorne PA USA 19047 gt Phone 215 750 1212 e Fax 215 750 1399 Info E Inst com www E Inst com Accurag D Page 38 of 38
14. 7 You will automatically be connected to your AQ EXPERT If a passkey is required it is 0000 four zeroes 8 The next prompt will give you the COM Port number please make note of this as you will need it to communicate with the AQ GAS software Then click Next Page 27 of 38 E instruments 2 AQ EXPERT Instruction amp Operations Manual Version 1 04 Add New Connection Wizard COM port setting Setup of COM43 complete Setup application software and driver if needed 9 The Bluetooth Settings window will now appear with your AQ EXPERT listed Double click on the icon to connect Once successfully connected your icon should change from the one below on the Gh ets B left to the one below on the right ici COM Port number to begin communicating with 10 Run the AQ GAS software and add the Bluetooth your AQ EXPERT Device Manager File Action View Help e Computer d Computer Se Disk drives Display adapters ALL CONNECTIONS DVD CD ROM drives When you connect your analyzer to your computer for 63 Floppy disk controllers the first time the connection will be assigned a unique Floppy disk drives comport number Remember the comport number as it E rcs S will be needed to open an AQ GAS session Mice and other pointing devices 0 Monitors You can find the comport associated with your
15. A Fiber Line Filter and Condensation Disk Filter Replacement The disposable fiber line filter is located inside the monitor located right in line with the sampling pump Its function is to prevent dirt amp dust particles from reaching the monitor s pump and sensors The disk condensation filter is also located in the same area directly behind the fiber line filter Its function is to prevent any residual water moisture from penetrating into the sensor area You must replace the filters when they become discolored or show any signs of cracks Never operate the AQ Expert without these filters Frequency of filter replacement depends on the application this instrument is being used in and the hours of active use To replace the filters remove the top section of the instrument case see section B below for more details on how to remove top section of the instrument and disconnect the two pieces of flexible tubing that hold the respective filters in place If you are replacing the disk filter make sure that the filter s lettering is facing the front face of the instrument B Sensor Replacement This should be an infrequent operation since the sensors have a typical life of a few years If you receive an error message for one of the sensors during instrument operation do not attempt to replace the sensor immediately Instead wait a few minutes and then zero the analyzer again If you get an error message again then investigate and determi
16. IN connection of the analyzer using the optional accessories included in the CALIBATION KIT Part AQCAL See CALIBRATION APPARATUS section below for how to connect Scroll down using down arrow key and have the cursor reverse color point to the line Zero CO2 Sensors Press the OK key to execute a zero cycle of the Sensor This procedure should last 20 seconds If no error messages appear at the end of the countdown proceed with your measurements ZERO THERMOCOUPLES This zeros the two thermocouple inputs T1 amp T2 If you are using any thermocouples with the AQ Expert be sure to perform a ZERO before making any measurements Be sure the Thermocouples being testing are at room temperature before Zeroing To start the zero procedure press the CALIB key and select ZERO Thermocouples B SPAN CALIBRATION TO SPAN CALIBRATE THE ANALYZER IT IS BEST TO USE ONLY SINGLE GAS MIXTURES WITH EITHER NITROGEN OR AIR BALANCE Page 23 of 38 E instruments 2 AQ EXPERT Instruction amp Operations Manual Version 1 04 You must always span calibrate the instrument every time you replace a sensor E Instruments recommends performing a span calibration of the instrument once every 6 months The parameters that require a span calibration are carbon monoxide carbon dioxide nitric oxide nitrogen dioxide sulfur dioxide hydrogen sulfide ozone and VOCs You can carry out all span calibrations in sequence Span calibration using you
17. IVE INFRARED NDIR SENSORS SENSOR RANGE RESOLUTION ACCURACY CARBON Std Range 0 5000 ppm 10 ppm 296 of Rdg DIOXIDE CO 10 ppm High Range 0 0 20 0 0 1 3 rdg DIOXIDE CO 3 AIR QUALITY SENSORS PHOTO IONIZATION DETECTOR PID SENSORS SENSOR RANGE RESOLUTION Min Detection ACCURACY VOCs Std Range 0 20 ppm 1 ppb 5 ppb 10 of Rdg 20 ppb VOCs High Range 0 200 ppm 1 ppb 25 ppm 10 of Rdg 50 ppb 4 OTHER SENSORS SENSOR RANGE RESOLUTION ACCURACY Temperature Type K T1 8 0 2000 F 1 F 5 F 3 C or 2 of T2 0 1100 C 1 C Rdg Ambient 40 125 C 0 1 0 4 C 0 60 C Temperature Barometric Pressure 260 1260 mbar 1 mbar 2 mbar Relative Humidity 0 100 0 196 2 RH Air Velocity 0 300 ft sec 1 ft sec Page 36 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 APPENDIX B REPLACEMENT PARTS PART NUMBER DESCRIPTION E85 9078 Printer Paper Roll EE650072 Line Filter EE650077 Condensation Disk Filter AAA32 240 Sensor 0 25 AQ CO 200 CO Sensor 0 200 ppm AQ CO 2000 CO Sensor 0 2000 ppm AQ NO 250 NO Sensor 0 250 ppm AQ NO 2000 NO Sensor 0 2000 ppm AQ NO2 20 NO Sensor 0 20 ppm AQ NO2 1000 NO Sensor 0 1000 ppm AQ 502 20 SO Sensor 0 20 ppm AQ SO2 2000 SO Sensor 0 20
18. None USB CONNECTION For USB connections use the A to B type USB cable supplied with the instrument To establish a USB connection the FTDI USB driver must first be installed on your computer The USB drivers for Windows computers are located on the E INSTRUMENTS CD e When you plug the USB cable from the computer to the analyzer you should hear a small da ding sound indicating that the USB connection has been made e f you have the USB driver already installed in your computer the computer will know and will NOT initialize the New Hardware Wizard e Ifthe New Hardware Wizard appears you need to install the USB driver To install this driver 1 Locate the FTDI USB driver on the CD or download it from the E INSTRUMENTS website and save it to your desktop 2 The downloaded file is zipped Double click the zipped folder and choose Extract All Files Extract the files to a folder on the Desktop The driver files are in the FTDI USB folder 3 Follow the instructions in the New Hardware Wizard 4 You will have to go through the wizard twice once to install the ftdiport inf file and once for the ftdibus inf file BLUETOOTH CONNECTION For Bluetooth connections the connection process varies with different Bluetooth devices Follow your manufacturer s instructions for adding a device The E INSTRUMENTS Bluetooth modem is a Class 1 device with a maximum range of 100m Obstacles such as walls and equipment will reduce the effectiv
19. PRINTER Part E852110 The AQ Expert uses a wireless Bluetooth remote printer The printer is powered by a rechargeable battery An AC charger is supplied with the printer The printer is optional with the AQ Expert See Chapter 7 for more information 6 OPTIONAL CALIBRATION KIT ZERO AIR Part AQCAL The AQ Expert uses a bottled Cylinder of ZERO AIR for ZERO Calibration Part AQCAL comes with 1 17L ZERO AIR Cylinder amp 1 Regulator Part AQAIR is replacement 1 17L ZERO AIR Cylinder only Page 34 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 APPENDIX A MODEL AQ EXPERT SPECIFICATIONS AIR QUALITY MONITOR PHYSICAL Material ABS plastic case with internal aluminum shielding Dimensions analyzer 11 42 X 10 24 X 4 88 Weight analyzer 7 6 lbs 3 5 kg Carrying case analyzer amp all accessories 13 6 Ibs 6 kg POWER 12 Volt 8 AH rechargeable Li lon battery pack Operating time 8 12 hours 110 240 VAC input 12 V 2 5A fast charger Charging time 3 hours maximum DISPLAY 2 6 x 1 4 128 x 64 graphic chip on glass white backlit LCD display Rotating display depending on analyzer case orientation Small and large fonts plus inverted background color for help messages Battery condition amp charger operation indicator WIRELESS REMOTE PRINTER 2 high resolution high speed graphic thermal printer with charger prints A current set o
20. T CONUAT E INSTRUMENTS in the Windows Device Manager 9 Communications Port COM1 To open the Device Manager 7 Communications Port COM2 Go to the Windows START menu click 4 RUN and type devmgmt msc Or go to the 9 Processors Control Panel choose the System icon then SCSI and RAID controllers 4 Sound video and game controllers See Storage volumes System devices Universal Serial Bus controllers E AQ EXPERT Instruction amp Operations Manual INSTRUMENTS Version 1 04 the Hardware tab and click the Device Manager key The comport will be listed as o USB Serial Port USB o Standard Serial over Bluetooth link Bluetooth AQ GAS SOFTWARE A window will open that will list PORTS among other items Click on PORTS You can enhance the performance and versatility of the E INSTRUMENTS AQ EXPERT by using the AQ GAS software program AQ GAS is available for most Windows operating systems The AQ GAS software is a robust package that allows you to 1 Monitor all Air Quality UK Air Quality Gas Analyze are AQ GAS Monitor EINST AQ EXPERT on COM61 param eters Bit File View Options Settings Help Cas Sample __15 minutes Bl xu m pane v AutoSave gt Data File C Users PJC Desktop DATA1 TXT 2 Record maximum minimum EIER El average for all Air Quality Sho
21. TRUMENTS E e AQ EXPERT Instruction amp Operations Manual Version 1 04 B INSTALLING REMOVAL OF SWIVEL HANDLE INSTRUCTIONS 1 2 Depress BOTH of the Grey Push Release buttons on the Left amp Right circular ends of the handle Photo B With the handle angled AWAY from the front face of the instrument and with the buttons depressed position the circular ends OVER the Gray circular holders ON the side of the instrument until it falls into place Photos C amp D Depress the Grey Push Release buttons and rotate the Handle down below the Front Face Photo E of the instrument until it locks into place under the instrument holding it upright in place Photo F To Remove the handle repeat steps 1 3 in reverse PHOTO A PHOTO B PHOTO C PHOTO D PHOTO E PHOTO F C REPACKING UNIT IN OPTIONAL VINYL CARRYING CASE With the AQ Expert powered OFF turn the instrument on its side with the FRONT FACE of the unit to the LEFT See photo A below Place the carrying case on a supported surface desk floor etc with the Front Logo facing the user With the AQ Expert powered OFF turn the instrument on its side with the FRONT FACE of the unit to the LEFT See photo A below Carefully place the AQ Expert in the Case taking SPECIAL PRECAUTION to NOT damage the External Temp RH Pressure sensor See Photo B below Page 5 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 PHOTO A PHOTO B Place AQ Expert on its si
22. alibration settings and zeroing of the analyzer s sensors STORE Controls operation of the analyzer s internal data storage PRINT Executes print commands for the analyzer s optional remote Bluetooth printer e The menus are navigated with the UP DOWN LEFT RIGHT amp OK keys MEASURE Page 9 of 38 AQ EXPERT Instruction amp Operations Manual INSTRUMENT OPERATION OVERVIEW Version 1 04 1 Turn the AQ Expert on by pressing the POWER key The instrument s internal pump will immediately turn on and the E INSTRUMENTS logo will appear 2 lf applicable attach the optional probe and sampling line to the monitor 3 Press the MEASURE key and check the unit s battery condition CO2 520s p O2 20 9 The MEASURE key allows the user to toggle between a small font and a large font screen Select the small font screen NO2 79 1 F 502 The battery icon is displayed in the middle of the bottom line of the RH 46 9 H2S display Its condition is marked by the shaded fraction of the icon If DPt 57 0 F the unit is powered by the battery charger a small plug icon will BP 1012mb VOC Opes replace the battery icon Sampling 312 45 00 NOTE When connecting the battery charger to the analyzer make sure that the plug icon appears on the MEASURE screen This enabied Tor your some she entries inco
23. de and use caution as to NOT damage the External RH Temp Pressure Sensor INSTRUCTIONS DO NOT LIFT OR HANDLE THE INSTRUMENT BY THE BLACK EXTERNAL TEMP RH PRESSURE SENSOR HOUSING D AQ EXPERT STARTING INSTRUCTIONS 1 Make sure the instrument is in a clean air room temperature environment and turn it on by pressing the POWER key on the keypad The instrument will begin to draw in air from the SAMPLE IN inlet at a rate of about 500 cc minute 2 If needed or in doubt of the contaminants in the Ambient Air you can initiate the ZERO CAL on ALL of the GAS sensors on the AQ Expert Please refer to CHAPTER 8 of this manual for ZERO amp SPAN calibration on the AQ Expert 3 Press the MEASURE key to view the ambient temperature barometric pressure relative humidity and dew point The toxic gas readings are also displayed CO CO2 NO NO2 SO2 H2S O3 amp VOCs 4 f at the end of the ZERO countdown if the display shows an error message for a particular sensor see the troubleshooting table in section D of this chapter The instrument will measure correctly all sensors that do not show an error message E SAFETY GUIDELINES amp ADVICE To make sure that your instrument will give you a long time of trouble free performance please observe the following recommendations 1 Follow the instructions in the AQ Expert manual 2 Never use the instrument without the disposable fiber soot line filter or the condensation disk filter
24. e range The AQ Expert is supplied with a Bluetooth Dongle to make connections to PC s without internal Bluetooth capabilities 1 Insert software CD into a CD Rom drive 2 Follow the on screen instructions to install software 3 After restarting your PC wait for the Add New Connection Wizard to appear If it does not appear then double click on the Bluetooth symbol at the bottom of the screen Page 26 of 38 instruments AQ EXPERT Instruction amp Operations Manual Version 1 04 Add New Connection Wizard X This wizard will create the settings for Bluetooth device connection Please ensure your Bluetooth devices are on and set to discoverable In order to certify Bluetooth there are times when the security setting is modified temporarily When setup ends it returns to the original setting automatically Express Recommended Custom Mode This allows you to set the details for the connection 4 Power on your AQ EXPERT 5 Select Express Mode and click next 6 Your instrument will appear as AQ The will be the serial number of the AQ Expert You may have to click on refresh Select your AQ EXPERT and then click next Add New Connection Wizard 9 Select a device Please choose the Bluetooth device you wish to use Bluetooth device Device Name Bj Nokia 5230 BlackBerry 8830
25. elect Buffer Start Average Test Start Periodic Store Select Interval 1m Review Buffer Name Buffers Erase Buffers 00 00 The AQ Expert has 1000 internal storage tags Each tag stores one complete set of air quality data There are two ways to store air quality data to the analyzer s buffer You can either store data by selecting the option STORE CURRENT DATA after pressing the STORE key or alternatively you can make use of the analyzer s capability of storing data automatically on a periodic basis You can set the time period between data storage The STORAGE MENU shows the relevant display lines for the storage options 1 STORE CURRENT BUFFER The analyzer will store one set of data into the tag currently selected The index number and the name of this tag appear at the bottom of the screen 2 SELECT BUFFER Selecting this item will display an index of the analyzer s 1000 internal storage tags Tags that are used have an icon next to their index number The selected storage tag is indicated by the reverse color line When data is stored this pointer will automatically advance to the next available tag If you want to store data in a different location use the UP DOWN amp OK keys to select a new tag As you scroll up and down tags containing data show their date and time at the bottom of the display Empty tags show the word empt y 3 START AVERAGE TEST This will begin a period of data averaging with the average valu
26. eps Verify that the reading for the sensor being calibrated matches the value entered in the calibration menu and that the reading for all of the other sensors is zero Turn off the gas flow nO o0 RO Temperature Humidity and Barometric Pressure Please contact E Instruments for proper Calibration Procedure Pressure and Air Velocity Calibration Procedure 1 gt Connect a pressure calibration standard to the pressure connector on the front of the instrument In the SETUP menu make sure the velocity sensor is off Press the CALIB key to enter the calibration menu Scroll down to SPAN VELOCITY and press OK Using the calibration standard generate a pressure value near the maximum stated value for the scale being used for instance 80 mbar if using the mbar range Enter the value generated as the span value using the arrow keys and press the enter key Verify that the reading on the instrument matches the reading on the calibration standard Page 25 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 9 COMMUNICATIONS The AQ Expert Monitor communicates with a PC either using the USB cable or wirelessly using its internal Bluetooth module If your computer does not have internal BT capabilities use the external BT module that is supplied with the AQ Expert The communication protocol is as follows BAUD RATE 115000 baud FORMAT 8 bits 1 stop bit no parity HANDSHAKE
27. erations Manual CHAPTER 3 Version 1 04 POWER REQUIREMENTS The AQ Expert can run off of AC power or the internal Li lon rechargeable battery pack It is recommended to run the AQ Expert off AC power as often as possible for maximum operating time Power is supplied by a Li lon rechargeable battery pack The battery pack will supply power to the analyzer for about at least 8 hours of continuous operation A 110 240 Volt AC charger having a 12 Volt DC 2 5A output is supplied with the instrument The battery charger will fully charge the battery pack in three hours You can check the condition of the batteries at any time 1 By pressing the MEASURE key small font screen and observing the battery icon located at the bottom of the display E Battery Full DL Battery Empty ih Battery Charger Connected hs Fast Charge Mode 2 2 By pressing the MEASURE key large font screen the user can scroll all the way to the end using the DOWN arrow key to observe the battery life shown in voltage When the unit is operating on its internal batteries the voltage displayed will vary from an initial 8 0 to 8 4 volts fully charged dropping slowly to approximately 7 volts batteries nearly empty When the battery voltage drops to 7 1 volts a low battery warning will appear on the display Within a few minutes later the instrument will automatically turn off to preserve the remaining battery power for the sensor bias voltages
28. es stored periodically in successive memory tags The interval between each storage cycle is displayed below and can be set by the user Once enabled this line will read STOP AVERAGE TEST 4 START PERIODIC This will turn on the periodic store function In this mode the unit will continuously store data at an interval displayed on the next line Once enabled this line will read STOP PERIODIC 5 SELECT INTERVAL The time between each store is set here This can range from 10 seconds to 60 minutes 6 REVIEW BUFFER This choice allows you to view previously saved data Press OK The display will switch to the data screen with the data in the first tag displayed The time and date when the data was saved will appear at the bottom of the display Use the UP DOWN keys to scroll through the tags Page 18 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 7 NAME BUFFERS This choice will take you to another NAME BUFFERS Screen where you can rename one or more tags This is useful if you use several tags together to form a test series Starting Tag 00 Select the starting test index with the UP DOWN LEFT Ending Tag 00 RIGHT keys and press OK Next select the ending test index The cursor will move to the first character of the first tag s name and the alphanumeric keyboard will appear Use the UP DOWN LEFT RIGHT keys to navigate around the
29. esolution Electrochemical sensors NO NO SO H2S O2 Sensor has been recently exposed to gas and has not yet returned to zero Purge for 10 minutes monitor sensor voltage and re zero Insufficient Warm Up Allow the sensors to warm up after 10 minutes Incorrect ZERO calibration Repeat ZERO cal in fresh air or with ZERO AIR cylinder Pump Failed Check pump flow if pump failed replace Battery was dead sensor has destabilized Charge battery wait up to 24 hours for sensors to stabilize and re zero Sensor cell is dead Call E INSTRUMENTS replacement PID sensors VOC Temperature Thermocouple Sensor has been recently exposed to gas and has not yet returned to zero Battery was dead sensor has destabilized Sensor cell is dead Thermocouple is not connected Purge for 10 minutes monitor sensor voltage and re zero Charge battery wait up to 24 hours for sensors to stabilize and re zero Call for a replacement Check electrical connections running to the probe Infrared No response from infrared system Zero period must be at least 20 seconds Zero the instrument again Infrared system is reporting error code Infrared system may need maintenance Velocity Velocity probe Pitot Tube is not connected Check probe and connections Bluetooth connection failure Connection Failed Redo con
30. f data B stored data C periodic data printouts D calibration history and external messages INSTRUMENT PUMP Continuous Air sample pump high quality diaphragm pump with long life motor STORAGE 1000 Internal memory storage tags each tag stores one complete set of data COMMUNICATIONS Bluetooth wireless Class 1 100m USB Cable SOFTWARE AQ GAS Windows PC Software Page 35 of 38 E INSTRUMENTS AQ EXPERT Instruction amp Operations Manual Version 1 04 SENSORS 1 AIR QUALITY SENSORS ELECTROCHEMICAL SENSOR RANGE RESOLUTION ACCURACY CARBON MONOXIDE Std Range 0 200 ppm 0 1 ppm 2ppm of CO 0 2 ppm CARBON MONOXIDE High Range 0 2000 ppm 1 ppm 300ppm 10ppm CO To 2000ppm 496 OXYGEN C2 Std Range 0 25 0 196 0 196 Vol NITRIC OXIDE NO Std Range 0 250 ppm 0 1 ppm 2 ppm of rdg NITRIC OXIDE NO High Range 0 2000 ppm 1 ppm 100ppm 5ppm To 2000ppm 496 NITROGEN DIOXIDE Std Range 0 20 ppm 0 1 ppm 0 5 ppm of rdg NO NITROGEN DIOXIDE High Range 1000 ppm 1 ppm 100ppm 5ppm NO To 1000ppm 496 SULFUR DIOXIDE Std Range 0 20 ppm 0 1 ppm 0 5 ppm of rdg 502 SULFUR DIOXIDE High Range 0 2000 ppm 1 ppm lt 100ppm 5ppm 50 2000ppm 4 HYDROGEN Std Range 0 100 ppm 1 ppm 4 of rdg SULPHIDE H2S 0 5 ppm OZONE Std Range 0 5ppm 1 ppb 2 AIR QUALITY SENSORS NON DISPERS
31. f water pressure measurement mmHg Millimeters of Mercury pressure measurement Hg Inches of Mercury pressure measurement PSI Pounds per Square Inch pressure measurement mmWC Millimeters of water pressure measurement kPa KiloPascals pressure measurement mbar Millibars pressure measurement FPS Feet per second gas air velocity measurement MPS Meters per second gas air velocity measurement CMM Cubic meters per minute gas air velocity measurement CFM Cubic feet per minute gas air velocity measurement V Voltage battery Page 3 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 1 INTRODUCTION A UNPACKING THE INSTRUMENT Every E INSTRUMENTS AQ EXPERT includes as standard equipment IAQ Monitor Model AQ Expert with Temp RH DPt WBT BP Differential Pressure and Differential Temperature Internal Continuous Sampling Pump Swivel Handle Battery charger AC adaptor for the analyzer AQ GAS Software for Windows CD ROM USB Cable for Software Kit Internal Wireless Bluetooth Bluetooth Dongle for PC Calibration Certificate Instruction manual The instrument can have up to six 6 electrochemical gas sensors one 1 infrared gas sensors and one 1 PID sensor installed The AQ Expert has three temperature sensors in total All sensor readings are single range readings with ranges listed in Appendix A INSTRUCTION amp OPERATIONS MANUAL Page 4 of 38 INS
32. he AQ Expert can include OR 502 The unit can NOT have all three 3 sensors SO together simulatenously 2 OPTIONAL EXTERNAL MEASURING PROBE using internal pump Certain applications might have the need for the optional probe 12 long stainless steel probe with 10 ft long hose for hard to reach places separate areas etc The probe consists of the stainless steel extraction probe the sampling line and a Type K thermocouple for external temperature measurements with the probe This standard probe Part AACSF22 is suitable for temperatures up to 800 1470 The end of the probe s sampling line connects to the SAMPLE IN quick disconnect connector of the Expert and the thermocouple connector connects to either of the yellow TEMPERATURE 1 or 2 inputs on the AQ Expert Page 33 of 38 E instruments d AQ EXPERT Instruction amp Operations Manual Version 1 04 3 OPTIONAL VINYL CARRYING CASE part E858140 4 OPTIONAL PITOT TUBES Pitot tube This optional pitot tube consists of stainless steel tubing with the tips open and bent at a certain angle to properly measure air or gas velocities The Pitot tube must always be oriented with the open tips parallel to the direction of the air flow The end of the Pitot tube assembly is connected by means of two flexible hoses to a very accurate pressure transducer located inside the drawer 5 OPTIONAL WIRELESS REMOTE
33. ield of most of the various available options This manual describes the complete instrument equipped with all the options The AQ Expert s standard capabilities include 1 NDIR sensor 0 5 000 ppm Ambient Temperature Relative Humidity Wet Bulb Dew Point Barometric Pressure two 2 separate Type K thermocouple temperature measurement inputs Air Velocity measurements differential pressure measurements 1000 internal storage tags Bluetooth wireless PC communications REAL TIME Data Logging capabilities using AQ GAS Windows software USB Cable and extensive user friendly help screens The available additional gas sensor options and accessories are 1 AIR QUALITY MONITOR SENSORS Carbon Dioxide CO2 non dispersive infrared NDIR sensor 0 20 e Carbon Monoxide CO electrochemical sensor 0 200 ppm OR 0 2000 ppm Oxygen O2 electrochemical sensor 0 25 Nitrogen Dioxide NO3 electrochemical sensor 0 20 ppm OR 0 1000 ppm e Nitrogen Oxide NO electrochemical sensor 0 250 ppm OR 0 2000 ppm e Sulfur Dioxide 50 electrochemical sensor 0 20 ppm OR 0 2000 ppm e Hydrogen Sulfide H2S electrochemical sensor 0 100 ppm e Ozone O3 electrochemical sensor 0 5 ppm sobutylene VOC sensor Photo ionization detector PID Sensor 0 20 ppm sobutylene VOC sensor Photo ionization detector PID Sensor 0 200 ppm Note When Ozone sensor is installed t
34. increase after a few seconds turn off the gas flow until the problem is found Otherwise press OK 8 When the countdown reaches 3 seconds there will be a series of beeps Verify that the reading for the sensor being calibrated matches the value entered in the calibration menu and that the reading for all of the other sensors is zero Turn off the gas flow 9 Repeat this procedure for each electrochemical sensor to be calibrated 10 After all of the sensors are calibrated turn the unit off and back on again and perform a zero NOOR NDIR CO Sensor 1 Turn the analyzer on and press OK to perform a zero Allow the instrument to warm up for 15 minutes and repeat the zero 2 Connect the outlet from the tee fitting of the gas calibration fixture to the connector on the front of the analyzer labeled SAMPLE IN using the set up shown on the previous page Press the key labeled CALIB to enter the calibration menu Scroll down to the SPAN TIME and set the value to 20 seconds Scroll down to the sensor to be calibrated If the calibration lock is on enter the password 1315 Use the arrow keys to enter the span value printed on the calibration cylinder Press OK Turn on the gas flow and observe gas readings If the gas reading for the sensor being calibrated does not increase after a few seconds turn off the gas flow until the problem is found Otherwise press OK 8 When the countdown reaches 3 seconds there will be a series of be
35. keyboard and press OK to select the letter or number For lower case letters highlight shift and press OK for symbols highlight sym and press OK The arrows in the corner forward or backward through the tag s name 8 ERASE BUFFER This option is used to erase stored data Data that has been stored in the analyzer s memory will be retained even after the instrument has been shut off and its batteries removed To erase the contents of a specific tag use the UP DOWN keys to move the arrow to the desired tag As you scroll up and down tags containing data show their date and time at the bottom of the display Empty tags show the word empty If you wish to erase all 1000 of the analyzer s stored data move the arrow to the entry ALL TAGS and press OK Page 19 of 38 AQ EXPERT Instruction amp Operations Manual CHAPTER 7 Version 1 04 WIRELESS REMOTE PRINTER The AQ Expert uses a wireless Bluetooth remote printer The printer is powered by a rechargeable battery An AC charger is supplied with the printer The printer is optional with the AQ Expert First you must turn the printer on Then press PRINT to scan and connect with your wireless printer to establish communications between the monitor and the printer WIRELESS PRINTERS Scan for printers WIRELESS PRINTERS WIRELESS PRINTERS Device Found Press OK to search gt Press OK to Connect Device 1 001122334455 Device Connected
36. me or mora of the ensures a proper power connection and charging of the batteries displays shown above will be blank if that option is not available Battery Full Battery Empty Battery Charger Connected APR 1 13 12 45 00 Temperature Units F Measure Units PPM 4 If you are using the monitor for the first time press the SETUP key Pressure Units inWC to set the appropriate parameters i e measurement units for your Pumps AUTO 1000cc m application See Chapter 4 for an explanation of each parameter Fast Charge Mode Velocity Units FPS Duct Size 0 in2 5 All sensor readings shown on the screen indicate Ambient Display Contrast 24 measurements To ZERO the gas sensors please see Baudrate 115 kbps Maintenance Chapter 8 of this manual 6 To obtain a printout of the data displayed press the PRINT key The cursor reverse color will point to Print Test Record Press the OK key to execute a printout on the AQ Expert s optional remote printer 7 Measured data can be stored in the analyzer s internal memory Please refer to Chapter 6 for more details about data storage 8 When you are finished with your measurements allow the analyzer to draw clean ambient air for several minutes before turning the analyzer off If you are using the optional probe please disconnect and let the instrument run in clean ambient air before turning the instrument off Page 10 of 38 AQ EXPERT Instruction amp Op
37. nalyzer icon should appear You are now connected to your analyzer 6 Click on the E INSTRUMENTS icon A menu will appear Choose Monitor from the menu Follow the AQ GAS manual for further instructions Monitor Setup AGIEXPER Storage Terminal Remove Port Page 30 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 10 MAINTENANCE The AQ Expert Indoor Air Quality Monitor is a sophisticated analytical instrument designed to perform accurate air quality measurements However because the monitor is a portable field lab used instrument that can be used in many environments care must be taken to prevent physical and environmental abuse to help maintain trouble free operation There are four components that will require periodic inspection or replacement These are 1 The disposable fiber line filter for particulates located inside the of the monitor 2 The disposable round disk condensation filter for moisture also located inside the of the monitor 3 Gas sensor periodic replacement Calibration 4 Printer paper replacement separate optional wireless printer INTERVAL ITEM PROCEDURE Weekly ZERO Check of ALL Gas Sensors Perform using ZERO AIR Weekly ZERO Check of the Sensor Perform using ZERO AIR 6 Months Inlet amp Moisture Filters Check and or Replace 6 Months SPAN Calibration of ALL Gas Sensors Perform or send to Factory
38. ne if moisture has entered the sensor area If so Page 31 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 wait a few hours for the moisture to evaporate and then zero again If the sensor failure persists then you must replace the sensor To access the sensor compartment you must remove the top section of the instrument case The top section of the analyzer case is held to the bottom section by a total of four retaining screws With both hands slide off the vent covers on each side Use a Philips screwdriver to remove both pairs of retaining screws one pair on each side of the case It is best to remove the bottom pair of screws first Carefully lift the top of the instrument case together with the attached aluminum mounting shielding plate especially since the top amp bottom cases pieces are connected with cables wires When the plastic case is open be careful when near the main board because some of the resistors on the board can get significantly hot The location of the gas sensors on the manifold is shown in the figure in Chapter 4 To replace a sensor locate its correct position on the manifold Carefully lift the small PC board that is mounted on top of the sensor Grab the sensor with your fingers and lift it twisting it out of its bayonet fitting Take a new sensor Remove any springs that may be shorting the sensor pins Install it on its mount and connect the small PC board on top of it Replace the top
39. nection process TROUBLESHOOTING Symptoms Possible Causes Resolution Battery is dead Plug in the charger Analyzer should Analyzer will not turn on turn on Screen is off Battery is not charging Check the charger and jack Check the case for excessive heat Internal initialization problem Reset the analyzer Analyzer turns on but screen is blue or faded Internal initialization problem Reset the analyzer Analyzer is overheating Unplug charger Check internal fan Turn on amp off to reinitialize Page 8 of 38 instruments 2 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 2 BASIC INSTRUMENT OPERATION The AQ EXPERT is operated by the 11 button keyboard located on the front of the analyzer e The POWER key turns the instrument on and off e The MEASURE key shows the currently measured parameters Displays the analyzer s currently measured data in either of two 2 fonts A Small fonts all data displayed simultaneously plus range indicated battery condition and time B Large fonts four data parameters displayed simultaneously Note The AQ Expert allows the user to ZOOM in and out of the screen by changing from Small to Large Fonts using the MEASURE key e Four keys will bring up a menu SETUP CALIB STORE amp PRINT SETUP Controls all customization parameters such as measurement units for the analyzer CALIB Controls c
40. p Operations Manual Version 1 04 1 ELECTROCHEMICAL SENSORS All electrochemical sensors are mounted on bayonet style fittings for easy removal Capillary Diffusion 7 Barrier Sensing B Electrode Separator Counter Electrode Current Collectors gt Electrolyte 2 Sensor Pins The electrochemical sensors are described below A Nitrogen Dioxide sensor This is a three electrode sensor that responds to nitrogen dioxide gas Nitrogen dioxide is a sticky gas and this sensor s response is usually the slowest of all sensors B Sulfur Dioxide sensor SOz It is a three electrode sensor that responds to sulfur dioxide gas It is equipped with an inboard filter to remove interference from H2S gas and other acidic gases C Nitric Oxide sensor NO sensor This is also a three electrode sensor that responds to nitric oxide It is equipped with an inboard filter to remove any interference from other acidic gases The nitric oxide sensor requires a constant bias voltage for proper operation This is supplied by the analyzer s battery If the battery voltage drops below a certain value the analyzer will turn off automatically to maintain the sensor bias If however the battery voltage further drops to near zero one must wait 24 hours after connecting the battery charger for the sensor bias to recover D Oxygen sensor O sensor This sensor measure
41. r own gas If you cannot calibrate the analyzer yourself you should return it to the factory for a complete calibration every 6 months If you wish to use your own span gas to perform span calibrations you must take certain precautions in order to calibrate the sensors properly Notice that you will need a number of certified gas cylinders Make sure that you use a bypass flow meter as shown below in the CALIBRATION APPARATUS section below in order to supply an adequate flow of span gas without developing excessive or insufficient pressure on the sensors Make sure the concentration of the calibration gas is within the range of each sensor Do not use gas that will over range the sensor For greatest accuracy it is recommended that you use a span gas value close to the gas concentration you expect to measure C CALIBRATION APPARATUS TO SPAN CALIBRATE THE ANALYZER IT IS BEST TO USE ONLY SINGLE GAS MIXTURES WITH EITHER NITROGEN OR AIR BALANCE During calibration an adequate flow of span gas must be supplied without developing excessive pressure on the sensors A compressed cylinder of span gas must be equipped with a primary pressure regulator Connect the regulator of the bottled gas to the AQ Expert Sample In A simple way to feed the span gas to your analyzer is by An open T connection that will ensure that gas is fed at ambient pressure The regulator valve is used to control the flow of gas to the analyzer To ensure that the span gas
42. s the oxygen concentration in the sample It is a two electrode electrochemical cell It has a silver cathode and a lead anode Oxygen diffuses through a tiny hole and reacts with the lead anode The reaction produces an electric current The unit software linearizes the current vs oxygen response The cell becomes exhausted when all the lead is consumed E Hydrogen Sulfide sensor H2S This is a 4 series three electrode micro sensor with low methanol interference It measures the concentration of hydrogen sulfide which is a highly toxic gas Special precautions must be taken during calibration F Carbon Monoxide sensor CO This is also a three electrode sensor that responds to carbon monoxide It is equipped with an inboard filter to remove any interference from other acidic gases Page 13 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 The optional High Range CO sensor has four electrodes One measures the concentration of carbon monoxide gas and the other the concentration of any interfering hydrogen gas It is hydrogen compensated G Ozone sensor O3 This is also a three electrode sensor that responds to ozone 2 NDIR INFRARED SENSOR A non dispersive infrared or NDIR sensor is a simple spectroscopic device most commonly used to measure in indoor air quality applications The main components are an infrared source lamp sample chamber or light tube a wavelength sample chamber and the CO
43. section of the case and secure it with the four screws Wait 30 minutes before zeroing the analyzer Span calibrate the sensor as explained in Chapter 8 If you are installing a pre calibrated sensor use the following procedure 1 While holding the SETUP key press the MEASURE key three times The display will show the sensor factors 2 Press the DOWN key until you reach the appropriate sensor then press OK 3 Use the UP DOWN keys to enter the correct factor digit by digit starting with the hundreds digit press OK to move through the tens ones and tenths digits C Printer Paper Replacement The external printer uses a high quality 2 thermal paper Keep any spare paper rolls in a cool dark place to prevent paper discoloration 1 Press the open key on the printer to open the paper cover 2 Insert the paper as shown in the image Remove any remaining core of a used paper roll 3 Make sure to align the paper roll properly 4 Pull the paper out as shown in the image and close the cover 5 Tear off any excess paper in the direction of the side of the printer Page 32 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 11 AQ EXPERT OPTIONS The INSTRUMENTS AQ EXPERT is an extremely versatile Indoor Air Quality IAQ measurement system that meets practically all Air Quality measurement requirements It has been designed as a modular system permitting the installation in the f
44. the toxic gas sensors e PPM Parts per million volumetric e MGM Milligrams per cubic meter weight Note Ozone and VOCs will always read in PPB parts per billion Page 16 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 PRESSURE UNITS Pressure measurements can be shown in millibar mbar inches of water inWC millimeters of water nmWC millimeters of mercury mmHG inches of mercury inHG pounds per square inch psi or kilopascal kPa 1 mbar 0 10 kPa 0 40 inWC 10 2 mmWC 12 95 inHg 0 75 mmHg 1 45 PSI VELOCITY UNITS Velocity Option Select between feet per second FPS meters per second MPS cubic feet per minute CFM or cubic meter per minute CMM DUCT SIZE Velocity Option Estimate the cross section area of your Ducts in square inches in2 and set this value to obtain automatic amp accurate Air Flow measurements in CFM or CMM PUMP Pump status is displayed a AUTO Automatic sample mode is selected b OFF The internal Pump is turned off DISPLAY CONTRAST Select the best value for viewing the LCD screen BAUDRATE The communication speed for both the USB port and the Bluetooth connection is set here The default setting is 115 kbps Page 17 of 38 AQ EXPERT Instruction amp Operations Manual Version 1 04 CHAPTER 6 INTERNAL DATA STORAGE The STORE MENU allows the operator to store data and manage the internal storage tags Store Current Buffer S
45. truction amp Operations Manual Version 1 04 CHAPTER 5 AQ EXPERT SETUP The SETUP MENU allows the operator to change the instrument s parameters APR 1 13 1245 00 Temperature Units F Measure Units PPM Pressure Units mbar Pumps AUTO 1000cc m Velocity Units FPS Duct Size 0 in Display Contrast 24 Baudrate 115 kbps Version 1 0011 Every parameter listed on the SETUP MENU screen be changed as follows a Use the UP DOWN keys to move the highlighted line to the parameter you wish to change b Press OK to edit the value The arrow will disappear as the current line shifts to the left by one character and a cursor appears over the value This indicates that you are in edit mode c Use the UP DOWN keys keys displaying the triangles until the desired value of the selected parameter appears on the display d Press the OK key to execute the change A more detailed explanation of each parameter follows 1 DATE amp TIME The internal clock is displayed in the format month day year hour minute second Hours are always displayed using a 24 hour clock format TEMPERATURE UNITS The UP DOWN keys toggle between F Fahrenheit and C Celsius Stack temperature and ambient temperature will be displayed printed and saved in the selected units GAS MEASURING UNITS When the cursor is blinking on this line you can select any of the following units of measurement for
46. w 7 Statistics Alarms 05 09 13 14 32 35 Current Avg parameters T Ambient 78 39 No Cal 3 Select a variety of saving and No Cal printing options 0 1 0 566 77 4 Retrieve stored data 5 Set alarms for every air quality parameter including recording the time duration that alarms have been exceeded 6 Plot bar graphs and time plots of all air quality parameters Rettesh stem OK The AQ GAS software can be downloaded from the included CD Rom Consult the AQ GAS manual for details on installing and operating the program The manual can be accessed by clicking on Help and then How Do I in the AQ GAS software program STARTING AQ GAS 1 Before starting AQ GAS have your analyzer turned on and connected via USB or Bluetooth 2 Start AQ GAS If you have connected before the analyzer icon will appear If this is the first time you are connecting you will need to add a new port 3 On the AQ GAS window click on Connections then click on Add Port Page 29 of 38 instruments 2 AQ EXPERT Instruction amp Operations Manual Version 1 04 File Help Scan All Ports Add Port Ports 4 Enter the COM port number which appeared in the Device Manager and click OK 5 The COM port with its number should appear on the left side of the AQ GAS window AQ GAS will look for an analyzer on this port After a moment the E INSTRUMENTS a
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