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EGM-5

Portable CO

Gas Analyzer

Operation Manual

Version 1.04

1 March 2018

PP Systems - 110 Haverhill Road, Suite 301 -Amesbury, MA 01913 U.S.A.

Tel: +1 978-834-0505 Fax: +1 978-834-0545

Email:

[email protected]

URL:

www.ppsystems.com

Содержание EGM-5

Страница 1: ...Operation Manual Version 1 04 2018 PP Systems All Rights Reserved 1 March 2018 PP Systems 110 Haverhill Road Suite 301 Amesbury MA 01913 U S A Tel 1 978 834 0505 Fax 1 978 834 0545 Email support ppsy...

Страница 2: ...e with EGM 5 13 Internal Sensors and WiFi 13 O2 Sensor 13 H2O Sensor 13 WiFi 13 External Sensors Chambers 14 Quantum Sensor 14 TRP 3 Temperature PAR Probe 14 SRC 2 Soil Respiration Chamber 15 CPY 5 Ca...

Страница 3: ...m Checks Before Starting 25 Touch Display Overview 26 Heartbeat and Display Update Rate 26 Splash Screen 28 Measurement Mode 28 Measure Screen 28 Readings Screen 30 Probe Screen 31 Graphic Display Scr...

Страница 4: ...ower 51 Settings 4 Menu 52 Set Clock 52 Defaults 53 Ship Mode 53 Processes 54 SRC Soil Respiration Chamber Process 54 CPY Canopy Assimilation Chamber Process 59 Custom Process 64 Injection Process 70...

Страница 5: ...rror Status 98 M String Measurements 98 V String Versions 98 W String Warm up 99 Z String Zeroing 99 EGM 5 Command Set Table 100 Get Set Parameter Values Table 106 GAS Gas Analysis Software 108 Web Pa...

Страница 6: ...py CO2 Flux 124 Theory 124 Correction for water vapor increase on CO2 efflux 125 FCO2 Units for measurement of Soil CO2 Efflux 126 References 126 Appendix 2 WiFi Compliance 127 Table C 1 Country Certi...

Страница 7: ...damage This manual is provided to help you install and operate the equipment Every effort has been made to ensure that the information it contains is accurate and complete PP Systems does not accept...

Страница 8: ...ing equipment to PP Systems for service you must first get in contact with our Service Manager service ppsystems com to request a case number for reference and tracking purposes Contact Information PP...

Страница 9: ...and the barrel connector into the EXT Power socket on the back of the EGM 5 3 Press the ON OFF switch to power up the instrument The power switch should now have an illuminating blue ring indicating...

Страница 10: ...e selectable Alarm 2 relay contacts Alarm1 and Alarm2 Visual and Audible alarm warnings Communications USB USB Mini B and Optional Wi Fi Air Filter Internal hydrophobic filter is used to protect analy...

Страница 11: ...hs is produced by the source and pulsed through a gold plated cell The interference filter narrows the bandwidth of the IR source received by the detector to the signature wavelength absorbed by the t...

Страница 12: ...effects The EGM 5 IRGAs are quite stable owing to their construction calibration and thermal environment but various circumstances can cause apparent changes over time Some changes may require recali...

Страница 13: ...ample the incoming gas stream Recalibration should not be necessary and based on our experience with this sensor it should have a working life of approximately 4 5 years H2O Sensor An optional solid s...

Страница 14: ...Cable Length 5 meters An optional leveling unit ACS039 is also available for use with the quantum sensor We highly recommend that you mount the sensor on a horizontal surface and that it is level for...

Страница 15: ...Sensor Precision Thermistor Range 0 50 o C Accuracy 0 3 o C at 25 o C CPY 5 Canopy Assimilation Chamber Our CPY 5 Canopy Assimilation Chamber is available for use with the EGM 5 for measurement of cl...

Страница 16: ...rature Sensor Precision Thermistor Range 0 50 o C Accuracy 0 3 o C at 25 o C Soil Moisture and Soil Temperature Sensor An optional soil moisture and soil temperature sensor HydraProbe II Stevens Water...

Страница 17: ...Note if the EGM 5 is used with external sensors chambers it will reduce the battery life depending on the probe connected A dead battery 0 capacity can be fully recharged in approximately 4 5 hours us...

Страница 18: ...conditions Due to its bi stable nature the EPD panel requires very little power to update and needs no power to maintain an image Features a Si TFT active matrix Electronic Paper Display EPD Resolutio...

Страница 19: ...allowing you to enter the desired values Back of EGM 5 Power Switch The power switch is located in the upper left hand corner of the back panel To power up the EGM 5 simply push in the switch When po...

Страница 20: ...rument continuously and recharge the internal battery when the EGM 5 is powered on If connected to the EGM 5 with power off it will recharge the internal battery faster Ext Power LED The amber LED is...

Страница 21: ...automatically If the indicating LED is a steady green then data is not being saved because the Interval sec is likely set to 0 under Memory Measure Settings See Memory Measure Settings on page 48 for...

Страница 22: ...High Alarm The relays are rated for 30 VDC 1A or 125 VAC 0 3 A ALARM 1B Associated with High Alarm The relays are rated for 30 VDC 1A or 125 VAC 0 3 A Analog Voltage Output One analog voltage output i...

Страница 23: ...ded cable to external relays or Programmable Logic Controller Typical cable Belden 9609 4C 24 Shielded Length 10 Ft Maximum Shielded cable to Data Logger or Programmable Logic Controller Typical cable...

Страница 24: ...non indicating soda lime can be used with the EGM 5 If using a self indicating desiccant you can visually determine when the desiccant is exhausted by change in color When the desiccant is more than 2...

Страница 25: ...seal and to avoid problems associated with cracks and leaks Also ensure that the gray foam filters are in good shape and replace when worn Check the condition of the CO2 scrubber i e soda lime and ma...

Страница 26: ...ring and after the warm up period the user has the ability to navigate through the menus as shown in the flowchart below The following sections describe each screen and its functionality Heartbeat and...

Страница 27: ...arm Sound Probe Port Analog Averaging EGM ID Graph Host WiFi Memory Host Port Reset WiFi WiFi Power Ship Mode Set Clock Defaults Info Menu Diagnostics Menu Calibration Menu ADC Zeros Hours Battery SRC...

Страница 28: ...third screen is the Probe screen which displays the values of six parameters in real time CO2 PAR Aux air temperature Tair soil temperature Tsoil and soil moisture Msoil The fourth screen Graphic Disp...

Страница 29: ...creen is displayed when this button is selected See Main Menu on page 33 for more details Status Box Any information or error messages are displayed here Right Arrow Starts the rotation through the 4...

Страница 30: ...return to normal 1 second display updates 71 Percentage of battery life remaining Record Saves current data as a marked record in the USB Memory stick and also sends the record to the host and WiFi p...

Страница 31: ...g Record Saves current data as a marked record in the USB Memory stick and also sends the record to the host and WiFi ports 98 Percentage of absorber column remaining Z Button Initiates a zero CO2 CO2...

Страница 32: ...ent of O2 concentration in and when pressed changes graphed parameter to O2 0 100 0 2000 ppm Y axis range and units CO2 concentration 3 min X axis time fixed value of 3 minutes Left Arrow Displays the...

Страница 33: ...ibrate the CO2 gas analyzer and O2 sensor and the Touch Screen See Calibration on page 77 Info Contains version information and contact information Back Returns to the Measure screen Status Box Any in...

Страница 34: ...replaced Flow Change view the pump power and view the flow rate Alarm Sound Change view the alarm sound This setting enables disables the alarm sound Probe Ports Change view the settings of Probe Port...

Страница 35: ...isplay radio buttons with the current selection indicated Press the desired setting in this case User Set either directly on the radio button or on the text to the right of the radio button Then selec...

Страница 36: ...then again after 6 more minutes then after 12 minutes then finally after 20 minutes It then performs zeros at the user specified interval It can be set from 1 to 11 000 minutes 7 days For a setting gr...

Страница 37: ...40 minutes or less Without frequent auto zeroing the EGM 5 could potentially drift and lose calibration accuracy beyond the 1 specification For those customers who are in a very stable environment and...

Страница 38: ...he High CO2 ppm text The numerical keypad will appear the user to enter a new value The default EGM 5 high alarm setting is 2000 ppm The High CO2 Alarm relay ALARM2 is closed when the CO2 reading exce...

Страница 39: ...Button Returns to the Settings 1 Menu Pump Power To change the Pump Power value select the button to the right of the Pump Power text The numerical keypad will appear allowing a new number to be ente...

Страница 40: ...t The Alarm Sound settings will be displayed with the current selection indicated Press the desired setting and then the Back button The Alarm Sound Setting screen will return with the updated Alarm S...

Страница 41: ...hen the Back button The Probe Port Settings screen will return with the updated Probe Port 1 value displayed Probe Port 2 Settings Probe Port 2 is for use only with the following Standard probes manuf...

Страница 42: ...ed by the EGM 5 The CO2 Averaging Limit parameter can be modified in this screen The default value is 30 ppm Graph Change view the settings of the CO2 concentration maximum value on the Graphic displa...

Страница 43: ...5 seconds to reach 66 of a new value and 10 seconds to reach 99 due to the time it takes samples to reach the IRGA In other words if an instrument goes from measuring Sample Gas A to Sample Gas B it...

Страница 44: ...g a new number to be entered After entering the desired value press the Back button to return to the Settings 2 Menu EGM ID This function allows the user to change view the settings of the EGM ID para...

Страница 45: ...to the right of the Max CO2 ppm text The Max CO2 settings will be displayed with the current selection indicated Press the radio button for the desired setting and then the Back button The Graphic Set...

Страница 46: ...ss connection and to the Internet Memory Configures the data format and time interval at which measurement data is sent to the USB memory stick Host Port Change view the settings of the port connectio...

Страница 47: ...re Format To change the Host Measure Format select the button to the right of the Format text The Measure Format Settings screen will be displayed with the current selection indicated Measure Format S...

Страница 48: ...Process operations will still be reported The maximum value is 3600 seconds 1 hour Default is 1 second Back Button Returns to the Settings 3 Menu WiFi Measure Interval To change the WiFi Measure Inter...

Страница 49: ...at Settings screen will be displayed with the current selection indicated See Measure Format Settings Table on page 93 for more details Memory Measure Interval To change the Memory Measure Interval se...

Страница 50: ...Back button The Port Connection Setting screen will return with the updated Port Connection value in the button text Press the Back button to return to the Settings 3 Menu Reset WiFi This function all...

Страница 51: ...f Back Returns to the Settings 3 Menu WiFi Power Setting To change the WiFi Power value select the button to the right of the WiFi Power text The WiFi Power settings will be display with the current s...

Страница 52: ...on or error messages are displayed here Right Arrow Returns to the Settings 1 Menu Set Clock This function allows the user to change view the EGM 5 real time clock The date is displayed as day month y...

Страница 53: ...n erroneous calibration or to simply undo undesirable configuration changes No Cancels the initialization process and returns to Setting 4 Menu Status Box Any information or error messages are display...

Страница 54: ...s Custom Starts the Custom process for use with customer s own chambers Injection Starts the Injection process using the Sample Injection Kit from PP Systems Static Starts the Static process Main Retu...

Страница 55: ...d Area Settings screen Step 2 SRC Volume and Area Settings Step 2 The volume and area settings are defined in this screen Important Note The above values are based on the default volume of the SRC 2 S...

Страница 56: ...SRC process Each new measurement session will begin after the specified Delay and will terminate when either the elapsed time reaches the DT value or when the total change in CO2 exceeds a specified t...

Страница 57: ...r error messages are displayed here Right Arrow Continues to SRC Prepare Chamber screen Step 5 SRC Step 5 This screen instructs the user to prepare the chamber SRC Prepare Chamber Menu Step 5 CO2 Curr...

Страница 58: ...on ppm 5 Countdown in seconds from 10 to 0 Stop Stops the SRC process and returns to SRC Other Settings menu Step 4 Status Box Any information or error messages are displayed here At this stage the SR...

Страница 59: ...ns to SRC Other Settings Step 4 Only the individual CO2 measurements are saved to the USB flash drive Process data is discarded Status Box Any information or error messages are displayed here New Stop...

Страница 60: ...tep 2 CPY Volume and Area Settings Step 2 The volume and area settings are defined in this screen Important Note The above values are based on the default volume for the CPY 5 Canopy Assimilation Cham...

Страница 61: ...nation Settings Step 3 The Termination Settings DT DC as well as Delay are defined in this screen CPY Termination Settings Menu DT seconds Maximum time for which changes in the chamber CO2 concentrati...

Страница 62: ...played here Right Arrow Continues to CPY Prepare Chamber menu Step 5 CPY Prepare Chamber Step 5 This screen instructs the user to prepare the chamber CPY Prepare Chamber Menu CO2 ppm Current measureme...

Страница 63: ...measurement of CO2 concentration ppm 5 Countdown in seconds from 10 to 0 Stop Stops the CPY process and returns to CPY Other Settings Step 4 Status Box Any information or error messages are displayed...

Страница 64: ...rmination Settings Step 3 maxDT Maximum time for which changes in the chamber CO2 concentration are monitored in a given session This value is defined in CPY Termination Settings Step 3 Abort Stops th...

Страница 65: ...displaying the Custom Volume and Area Settings menu Step 2 Custom Volume and Area Settings Step 2 The volume and area settings are defined in this screen Important Note You must remember to account f...

Страница 66: ...and Delay are defined in this screen Custom Termination Settings Menu DT seconds Maximum time for which changes in the chamber CO2 concentration are monitored in a given session Valid entries range be...

Страница 67: ...Custom Prepare Chamber screen Step 5 Custom Prepare Chamber Step 5 This screen prompts the user to prepare the chamber Custom Prepare Chamber Menu CO2 ppm CO2 concentration Stop Stops the Custom proc...

Страница 68: ...n the soil to commence measuring Custom Start Measuring Menu CO2 ppm CO2 concentration 5 Countdown in seconds from 10 to 0 Stop Stops the Custom process and returns to Custom Step 4 Status Box Any inf...

Страница 69: ...2 hour 1 Q Quadratic respiration rate g m 2 hour 1 Plot Plot number defined by user in Custom Other Settings Step 4 X axis Time 1 second interval Y axis dC change in CO2 concentration ppm maxDC Maximu...

Страница 70: ...b ppm baseline CO2 readings before the measurement phase averaged over 10 readings CO2_m ppm CO2 readings during the measurement phase t s sample interval typically 1 second F ml min 1 flow rate V ml...

Страница 71: ...not exceed 3 ml s due to the risk of over pressurizing the IRGA and causing damage to the instrument We recommend glass syringes if available e g typical GC syringes but plastic polypropylene syringe...

Страница 72: ...ess to Injection Step 3 screen Injection Sample Setting Step 3 The sample number is defined in this screen Once the Start button is pressed the Injection process will begin Before you press Start take...

Страница 73: ...rm one every single measurement Perform Zero Yes Button Does a Zero then proceeds to Measuring screen Step 5 No Button Proceeds to Measuring screen Step 5 Injection Step 5 Baseline Phase This is the B...

Страница 74: ...Stops the Injection process and returns to Injection Settings Step 2 Process data is not saved to the USB flash drive New Button Stops the Injection process and returns to Injection Settings Step 2 In...

Страница 75: ...dropped to 0 ppm or a very low background value wait 3 5 seconds to make sure M has stabilized and take note of the value This value is also recorded on the USB memory stick if a memory stick has been...

Страница 76: ...art a new measurement press New Remove the syringe from the GAS OUT port to allow the system to flush properly Static Start Process Step 1 The first screen asks the user to confirm that they would lik...

Страница 77: ...ified under Main Settings Settings 2 Graph Abort Stops the Injection process and returns to the Processes Menu Static Process results are not saved to the USB flash drive Status Box Any information or...

Страница 78: ...enced against a gas of known CO2 concentration The EGM 5 calibration procedure uses two reference points 1 Zero CO2 generated from air that has been scrubbed of CO2 through the soda lime in the absorb...

Страница 79: ...eater than or equal to the anticipated measurement range of the instrument For example if the anticipated measurement range of your samples will be 0 350 ppm the instrument should be calibrated using...

Страница 80: ...4 above When the Actual CO2 value has stabilized i e not changing by more than 1 ppm after 30 seconds press the OK button To cancel without performing a Calibration press Stop If the process is succes...

Страница 81: ...signal from the O2 sensor is referenced against a gas of known O2 concentration For greater accuracy reference gas mixtures should be accurate to at least 1 and traceable to NIST standards Follow the...

Страница 82: ...displayed value may not be the value you entered in step 3 above When the Actual O2 value has stabilized i e not changing by more than 0 1 after seconds press the OK button To cancel without performin...

Страница 83: ...owering up the EGM 5 If your touch screen is not reacting to your touch 1 Turn the instrument off 2 Place your finger anywhere on the touch display and turn system power on and wait for the next scree...

Страница 84: ...ges Displays the external voltage the flow sensor voltage the Aux Analog Out voltage and the O2 sensor voltage Advanced Displays more advanced diagnostics functions These functions are password protec...

Страница 85: ...ntil the unit performs an Auto Zero Diagnostics Mode Setting Measure Puts the EGM 5 into Measure mode In Measure mode the CR value should read approximately 35000 45000 for CO2 concentrations around 4...

Страница 86: ...plays the percentage of battery remaining the voltage and current of the battery and the time remaining before the battery is completely discharged Battery Diagnostics Charge Displays the percentage o...

Страница 87: ...er Flow Sen V Displays the flow sensor voltage Aux V Displays the Aux Analog Out voltage O2 Sen V Displays the O2 Sensor voltage Back Returns to the Diagnostics Menu Advanced Diagnostics This screen p...

Страница 88: ...bout This function allows the user to view hardware and software serial and version numbers About Controller SN Displays the Controller serial number This is the also the instrument serial number Cont...

Страница 89: ...own memory stick ensure it is formatted as FAT32 with a 512 byte sector size for best performance Data recording begins when a flash drive is inserted into the USB port on the EGM 5 unless the Interva...

Страница 90: ...file is created and the increment I is increased Any files in this directory with extensions other than txt do not contain valid data and may be deleted or ignored Even if the Measure Interval is set...

Страница 91: ...flow cc min H20 Ref H2O reading in millibars mb if optional H2O sensor is installed RHT Temperature of RH sensor C if optional H2O sensor is installed O2 Ref O2 percentage if optional O2 sensor is in...

Страница 92: ...Parameter 5 SRQ Rate Assimilation grams CO2 m2 Hour 1 Process Data Format CPY mode Parameter 1 Process 50 Process Data Parameter 2 DC Change in CO2 concentration inverted ppm Parameter 3 DT Process r...

Страница 93: ...m CO2 reading in parts per million ppm mol mol 1 Air Pressure mb Atmospheric pressure Flow Rate cc min Rate of flow H20 mb H2O reading H20 Sensor Temperature C Temperature of the gas sample O2 O2 read...

Страница 94: ...elds An example is M4 1094 1004 2 327 0 0 00 0 20 41 00 0 000 825 23 4 25 7 12 CR The format is as follows M4 Specifies the data format CO2 ppm CO2 reading in parts per million ppm mol mol 1 Air Press...

Страница 95: ...3 See Process Data Fields on page 91 Parameter 4 See Process Data Fields on page 91 Parameter 5 See Process Data Fields on page 91 M6 M6 is the raw format containing raw data A D values from the IRGA...

Страница 96: ...s made to the EGM 5 as described in the previous section communication software is needed to read display and record data This section describes three methods for reading EGM 5 data and changing setti...

Страница 97: ...C parameter value is 0 CRC Off no CRCs will be appended to any of the commands received from the EGM 5 If the CRC parameter value is 1 CRC On CRCs will be appended including the C to all commands rece...

Страница 98: ...a fixed interval The interval and the string format may be modified When the interval is set to 0 the M string stops sending automatically but can be manually polled by sending the M command Example M...

Страница 99: ...80 59 47 CR In this example 55 0 is the IRGA temperature C 80 is the Battery of Charge 59 47 is the Remaining Zero Column Capacity Z Auto Z String Zeroing The Z string indicates a zero in progress Dur...

Страница 100: ...diagnostic toggle for the alarm relay x 1 for ALARM1 Relay x 2 for ALARM2 Relay y 0 for Relay Off y 1 for Relay On Example Sent from Host A 1 1 CR Received from EGM 5 CR A 1 1 In this example ALARM1 r...

Страница 101: ...L_VALUE_OOR_O2 16 CAL_FACTOR_OOR_O2 17 EXAMPLE 1 Calibrate to a 2000ppm CO2 reference gas Example Sent from Host C 1 0 2000 CR Received from EGM 5 CR C 1 0 2000 1 091 0 In the example the CO2 reading...

Страница 102: ...peration Mx Character with Parameters M Command Measure String This command performs a one shot measurement output Each time Mx is sent to the instrument one set of data is displayed in the currently...

Страница 103: ...Fan on low speed and start Zeros 20 Start the SRC process or Restart if already running 30 Start the Injection process or Restart if already running 40 Start the Static process or Restart if already r...

Страница 104: ...to set all of the day time values at once Example Current time 05 01 2015 15 42 04 Sent from Host T 04 42 10 05 02 15 CR Received from EGM 5 CR T 04 42 10 05 02 15 CR In this example hour is changed f...

Страница 105: ...This command retrieves the A D counts for the last seven zeros performed Example Sent from Host X CR Received from EGM 5 CR X 44200 44223 49971 49972 49976 49981 49973 CR Z Character Z Command Do a Ze...

Страница 106: ...r flow 0 100 60 10 Host Measure Format See Host Measure Settings on page 46 for more information 1 6 3 11 Host Measure Interval seconds See Host Measure Settings on page 46 for more information Use 0...

Страница 107: ...jection mode 0 5 2 0 1 29 SRC Volume cc SRC chamber volume cc 1000 2000 1171 30 SRC Area cm2 SRC Chamber surface area 50 100 78 31 CPY Volume cc CPY Chamber volume cc 1000 5000 2427 32 CPY Area cm2 CP...

Страница 108: ...the flash drive that comes with each new instrument Part No 10182 1 under the PC Utilities GAS_v x directory where x is the version number GAS is also available for download directly from our website...

Страница 109: ...d data Start Record for a time segment Clicking the Advanced button will show a command line window for sending commands directly to and from the EGM 5 The Settings button allows the user to modify th...

Страница 110: ...en The Splash Screen is the first screen displayed There are two buttons the user can choose from Main and Settings To return to the Splash screen while in any other screen click the PP Systems logo i...

Страница 111: ...emperature Flow Rate and Air Pressure Sensors Screen Displays the values of six parameters in real time CO2 PAR soil temperature Tsoil air temperature Tair Aux Analog Out and soil moisture Msoil Proce...

Страница 112: ...tom code on a wireless connection please contact PP Systems for more information Connection to EGM 5 Typical Distance Receiving Device Software Result USB 0 2 meter Any USB host device PC laptop table...

Страница 113: ...scan for available wireless networks and above SSID should be presented as a choice Select the SSID and follow the device connection manager instructions Note if more than one EGM 5 is powered on with...

Страница 114: ...EGM 5 web pages 1 Connect to the EGM 5 using the SoftAP method described above from any wireless device Then navigate to the Wireless Network Settings Main Settings Yes 2 Select WLAN QuickConnect Qui...

Страница 115: ...ent connection details which can be configured through the WLAN Profiles menu 6 Once the EGM 5 is successfully connected a LAN view the Status page under the Interface wlan0 section to see the IP addr...

Страница 116: ...er Firefox Chrome Safari and enter the EGM 5 IP address in the address bar Some browsers may interpret that address as a search term rather than a LAN IP address so begin the address with http if nece...

Страница 117: ...he Absorber column material has been exhausted and needs replacing 24 Zero 2 min Zero will occur in 2 minutes 25 Zero 1 min Zero will occur in 1 minutes 26 IRGA DigiPot Could not successfully write th...

Страница 118: ...e Firmware upgrade file not found on disk This message is displayed each time a disk is inserted into the drive 61 Mem Detected Flash drive message Disk detected This message should be displayed each...

Страница 119: ...ernal Air Filter An external air filter should be used at all times and fitted in line with the GAS IN port on the EGM 5 to protect internal components from dirt and dust see below The main assembly S...

Страница 120: ...awn with the gas stream causing damage to the instrument End Cap O Rings Each end cap has two O rings one that seals inside the plastic column and another that seals at the manifold All O Rings on the...

Страница 121: ...P Systems Take caution to wash your hands completely after handling soda lime Re Order Information Part Number Description 10164 1 EGM 5 Absorber Column Complete 20041 2 Absorber Column clear plastic...

Страница 122: ...ess to the internal PCB that includes the pump IRGA and hydrophobic filter you will need to remove two more screws that secure the aluminum enclosure to the top panel as highlighted below in the red c...

Страница 123: ...e a few checks can be made to ensure that the analyzer is working properly after changing a source lamp in the field Please contact PP Systems for more information Hydrophobic Filter There are two int...

Страница 124: ...hat to make accurate measurements of the respiration it is essential to start with a CO2 concentration in the chamber below ambient and measure until the concentration is above ambient presumably with...

Страница 125: ...an indication of the magnitude of the non linearity of the C vs T data The EGM 5 software indicates a non linear error message whenever the value is greater than 20 of This is believed to be a better...

Страница 126: ...n is made g m 2 hr 1 mol mol s 1013 273 273 44 009 g 22 414 L m3 m2 mol 106 mol 3600 s hr 103 L m3 Where is from eqn 1 9 from linear or quadratic fit and with H2O compensation is the correction for ba...

Страница 127: ...by Lantronix According to the ISO IEC Guide and EN 45014 Manufacturer s Name Address Lantronix Inc 167 Technology Drive Irvine CA 92618 USA Declares that the following product Product Name Models xPic...

Страница 128: ...Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequ...

Страница 129: ...s authority to operate this equipment This transmitter must not be co located or operating in conjunction with any other antenna or transmitter Radiation Exposure Statement This equipment complies wit...

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