User Manual - Forerunner Research
Contents
1. sensing which correlates light source intensity to a specific gas concentration The GP 001 GP 002 sensors offer a CO concentration measurement accuracy of 1 of full scale with a repeatability of 1 of reading The GP CO concentration readings are automatically corrected for changes in temperature and can also be compensated for changes in atmospheric pressure using the ideal gas law correction x o Pref C C x where C is the raw concentration Par is the reference pressure 101 35 kPa and P is the pressure measured in the field in kPa This correction is incorporated into the FRConnect GP software but must be applied by the user for SE voltage concentration measurements For applications where high accuracy is important Forerunner recom mends that users periodically check the calibration of their sensors by exposing them to known concentration standards This is necessary as NDIR sensors can drift over time due to natural changes in the electrical and mechanical properties of the NDIR components 2 4 Main Power amp Data Cable The GP 001 GP 002 ships with a standard 5 m long power and data cable SSC which plugs directly into the 12 pin socket on the GP housing Figure 1 shows the SSC Power amp Data Cable Ensure that the notch on the SSC connector is aligned with the tab on the 12 pin GP socket push to seat the connec tor on to the socket and hand tighten the connector Power is supplied to the GP via t2. Low SD CO2 High CO2 High SD CO2 Low Raw CO2_Low_Raw_SD CO2_High Raw CO2 High Raw SD Temp Temp_SD Samples 2 6 5 2014 8 23 602 7 1 757 528 3 1 838 602 7 1 757 528 3 1 838 28 9 0 007 8 3 6 5 2014 8 24 601 1 1 982 526 6 2 064 601 1 1 982 526 6 2 064 28 9 0 007 8 4 6 5 2014 8 25 602 4 2 573 528 2 679 602 4 2 573 528 2 679 28 9 0 011 8 6 5 2014 8 26 603 1 2 28 528 7 2 376 603 1 2 28 528 7 2 376 28 9 0 012 8 6 6 5 2014 8 27 606 4 2 113 532 1 2 206 606 4 2 113 532 1 2 206 28 9 0 011 8 7 6 5 2014 8 28 606 0 72 531 7 0 752 606 0 72 531 7 0 752 28 9 0 012 8 8 6 5 2014 8 29 606 6 1 802 532 3 1 882 606 6 1 802 532 3 1 882 28 9 0 01 8 9 6 5 2014 8 30 605 7 2 031 531 4 2 116 605 7 2 031 531 4 2 116 29 0 013 8 10 6 5 2014 8 31 608 8 1 329 534 6 1 386 608 8 1 329 534 6 1 386 29 0 011 8 11 6 5 2014 8 32 609 8 1 98 535 6 2 069 609 8 1 98 535 6 2 069 29 0 012 8 12 6 5 2014 8 33 610 3 1 043 536 2 1 09 610 3 1 043 536 2 1 09 29 0 013 8 13 6 5 2014 8 34 610 7 2 276 536 6 2 378 610 7 2 276 536 6 2 378 29 0 01 8 1A AISINA 9 96 SN A 1626 S264 9 1 71 AIN A 1 AJA S264 17 a 71 na Nn N11 ki Figure 7 Sample FRConnect GP data file Each of the possible data fields in the output file are listed below with a brief descrip tion of what that value represents The timestamp for the line of data The default format is Timestamp MM DD YYYY HH MM SS with the option of changing to sec onds since start of session The average CO concentration over the in
3. housing to prevent intentional or accidental loosening of the cap Any tampering with the cap will void the warranty on the GP and its components 2 2 Membrane Integrity The GP membrane is critical to proper operation of the device The membrane should always appear uniform in colour and free from visible defects It is important to period ically check the membrane as use in field conditions may cause it to tear or otherwise become defective and the membrane will degrade naturally over time Membranes should be replaced annually for best results though the membrane life cycle may be shortened by exposure to harsh conditions If the membrane appears to be compromised it is critical that the GP not be submerged in water Contact Forerunner at 1 902 870 5220 or by email at supportOforerunnerresearch ca for additional information or to order membrane replacements When using the GP to monitor CO concentrations in water columns deeper than 1 m users should both slowly lower the sensor into the water and slowly extract the sensor after the monitoring period Rapid submersion extraction in deep water can cause rapid pressure changes in the sensor and can compromise the membrane seal allowing water to leak into the sensor housing A submersion extraction timespan of 15 minutes in 3 m of water should be sufficient to avoid this problem 2 3 CO Measurement The GP series of sensors measure gas concentration using non dispersive infrared NDIR
4. page on the Forerunner website http www forerunnerresearch ca GP php for the most up to date manual REV June 23 2014 GP001 GP002 and FRConnect GP User Manual Contents 1 Introduction 2 Hardware o e c wa oe dew ee how eeeuw ee oe Gd eee abe ee 2 2 Membrane Integrity SN 5 4 amp 6 e ROS ee ROR Se ee Oe ES 2 3 CO Measurement 0 0 0 000000000 2 ee 2 4 Main Power amp Data Cable 00000008 2 5 Power Connectors e i e e ao ea eee ee ee ee eee eee ee eee sa 3 FRConnect GP User Interface 3 1 Setup and Connection 42a sn6 ead dea ed GH HDR De RS ES HSS oo Using the ler repara sos NER aE Epse unnir 4 Logged Datafiles 5 Troubleshooting List of Figures SSC Main Power 4 Data Cable 0 DC Power Cable 0 000000 a Data Lablo lt gt sags tk SEES sanar EES FRConnect GP Main Window oaa FRConnect GP Data Options FRConnect GP Plotting Options e Sample FRConnect GP data IO oF eB WN r List of Tables 1 Scaling for single ended voltage outputs on the GP 001 002 sensors wy I AID OF OT OT QU 1 Introduction This manual outlines the operation and features of the GP 001 GP 002 Carbon Diox ide CO2 Probes as well as the included FRConnect GP software package Before pro viding power to the GP please ensure that you read the section on Power Connectors to avoid any damage to the sensor We strongly recommended tha
5. the GP is powered independently of the device which is logging the S E voltages then the S E voltage may change with varying power supplies even if the gas concentration or temperature has not changed It is critical that the device which is logging the S E voltages and that providing the power for the GP have the same ground For example if using a commercially available data logger to log the S E voltage also use the 12 V power supply port that exists on the data logger e GP readings are abnormally noisy The GP sensor requires a stable power supply with minimal noise in order to achieve the lowest possible noise on concentration and temperature measurements When using the GP ensure that the power supply is of high quality or that the power supply variation is buffered with an in line battery or other power smoothing device If you are unsure about your power supply setup please contact Forerunner e GP readings are off from my laboratory standard Forerunner makes all efforts to ensure accurate calibration including periodic checks against NIST traceable standards however calibrations may vary from individual lab oratory standards There are several reasons for this including long term sensor drift changes in atmospheric pressure sensors are calibrated at sea level and variation in gas supplier analysis techniques We highly recommend that users concerned with comparing GP results with other laboratory and field instrumentation re c
6. CU Concentration 0 gt 5000 ppm High range CO2 Concentration 020000 ppm 20 C 50 C Table 1 Scaling for single ended voltage outputs on the GP 001 002 sensors The equations below show an example calculation of CO concentration from an as sumed single ended voltage reading SEV of 2 V SEV 2 V 2 V 5 V 0 4 0 4 5000 ppm 2000 ppm Please note that unless a specific temperature calibration was requested the range for temperature is 20 C to 50 C Finally the optional 10 m cable SLC has the same configuration and outputs as the SSC 1High range calibration values available only with optional dual calibration With single range calibrated devices Gray SE wire is auxiliary e g CO2 alarm CO2 concentration deviation etc 2 5 Power Connectors The power supply cable included with the GP 001 002 sensors allows for power ing the sensor using a DC power supply DC Figure 2 shows the DC external power cable The cable includes a 2 pin connector for attachment to the SSC SLC cables The opposite end of the cable has stripped wire ends to al low for connection to any DC power sup ply The black wire should be attached to the ground terminal of the DC power device and the red wire should be at tached to the positive terminal The GP can operate on DC power ranging from 9 24 V with 12 V being the standard voltage used during calibration and test ing Exceeding 24 V will damage the Figure 2 DC Power
7. Cable GP please ensure that the voltage is regulated correctly before connecting the power sup ply to the GP The power consumption will vary slightly depending upon the supplied voltage At the recommended voltage of 12 V the average draw is 30 mA with a peak of lt 100 mA giving an average power draw of 0 36 W 2 6 Data Cable Communication between FRConnect GP and a GP 001 GP 002 uses the RS 232 Serial protocol The following components may be used to facilitate this interface e GP Data Power Cable Fig 1 Included Used to power a GP 001 GP 002 as well as provide an RS 232 interface e Serial Extension Cable Fig 3a Included Connects the GP Data cable to a USB Serial converter e USB Serial Converter Fig 3b Optional Used to create a virtual comport al lowing the GP Data cable to be connected to a computer through a USB port a Serial Extension Cable b USB Serial Converter Figure 3 Data Cables 3 EFRConnect GP User Interface 3 1 Setup and Connection FRConnect GP requires no installation on the part of the user Simply download the file FRConnect GP zip from the GP CO Gas Probe product page on the Forerunner website http www forerunnerresearch ca GP php and save to a suitable directory on the PC in question then unzip the file which contains one folder titled FRConnect GP None of the files in this folder should be removed or changed in any way If this occurs
8. FYERERUNNER RES EAR H I N D User Manual GP 001 GP 002 CO Gas Probe Copyright 2014 Forerunner Researc h Inc This guide is distributed by FORERUNNER RESEARCH INC Forerunner for users of the GP 001 or GP 002 Gas Probe instruments in conjunction with the FRConnect GP software The GP housing and internal wiring is under warranty by Forerunner to be free from defects in workmanship and materials under normal use and service for thirty six 36 months The infrared gas analyzer sensor is covered by warranty against malfunction for twelve 12 months This warranty shall not apply to any Forerunner products which have been subjected to misuse modification neglect accidents of nature or shipping damage The GP membrane is not covered under warranty This membrane will degrade over time and should be replaced after twelve 12 months Membrane replacements are offered by Forerunner for purchase Forerunner is not liable for special indirect incidental or consequential damages Forerunner s obligation under this warranty is limited to repairing or replacing at Forerunner s discretion defective products The customer shall assume all costs of removing reinstalling and shipping defective products to Forerunner where applicable Forerunner will return said products by surface carrier prepaid This warranty is in lieu of all other warranties expressed or implied DISCLAIMER Please check the GP CO Gas Probe Product
9. VDC e FRConnect GP does not show or log any data Ensure that the gas probe is connected to power and that a session has been started via the Start button in FRConnect GP Check that the correct ComPort has been selected under Options ComPort If the problem persists exit FRConnect GP dis connect and then reconnect the USB data cable then re launch FRConnect GP e No ComPorts show up under Options ComPort Ensure that the gas probe is connected to power Open the device manager from the Control Panel in Windows and reconnect the USB data cable If no connections show up under Ports Com amp LPT please contact Forerunner for further instruction e The GP socket cable is oxidizing discolouring when used in water In environments which have higher than normal levels of salt or other ions the GP socket and or cable may oxidize or discolour This will not affect the measurement performance but will shorten the lifetime of the sensor In these types of environments we recommend attaching the cable to the GP probe and then lightly coating the metal components with silicone grease i e high vacuum grease Coating with silicone grease is also advisable in waterlogged soils e S E voltage outputs vary with power supply type voltage The S E voltage wires output 0 V to 5 V signals that correspond to the current CO and temperature readings in the sensor These outputs can be monitored as an alternative to receiving digital data If
10. alibrate GP sensors using the same standards and or cross calibrate all instruments 11 Forerunner Research Inc 1 Research Drive Dartmouth Nova Scotia Canada B2Y 4M9 Phone 1 902 870 5220 Fax 1 902 466 6889 Email support forerunnerresearch ca
11. g session has been running Clicking the Start SE Ai button will enable FRConnect GP to start collecting measure Figure 4 FRConnect GP Main Window ments from a connected GP 001 or GP 002 and to both plot and log this data Note that the plot will show every individ ual measurement while the datafile will contain averages over an interval specified by the user Once a session has been started clicking the Stop button will stop FRConnect GP from recording measurements from the gas probe The plotted values will remain until the Start button is used again at which point the plot will be reset 1 25 2 50 Time minutes 21f your computer lacks decompression software 7zip is a suitable free utility for handing archive files 3Your computer may be set to hide the exe extension The bottom section contains a plot of recent concentrations over the chosen time interval This interval defaults to 15 minutes but can be changed using the radio but tons at the bottom If the collected data exceeds this interval then only the most recent points will be shown There are several secondary plotting options available in Options gt Plotting Options including the ability to toggle between an automatic and fixed scale for the Y axis To start collecting data first choose a location to save logged Choose Fields data by clicking the Change button across from the Log El Time CO2 CO2 SD CO2 Raw CO2 Raw SD Temp Temp SD Sa
12. he two pin connector on the oppo site end of the SSC This connector also has a tab and notch type sys tem to ensure that the user connects power with the correct polarity The GP may be powered by supplying a regulated voltage to the sensor via data logger battery or other power supply device Please see the section entitled Power Connectors for more details Figure 1 SSC Main Power amp Data Cable Sensor data including CO concentration and sensor temperature measurements can be accessed by two methods The first is by using the 3 pin Data connector on the SSC combined with the Data connector cable The FRConnect GP software can then be used to read the data from the sensor please see the section entitled FRConnect GP User Interface for more information on using FRConnect GP Alternatively the sensor output can be accessed using the single ended SE voltage outputs at the end of the SSC Three wires provide signals corresponding to low range CO concentration Purple high range CO concentration Gray and sensor temperature Blue All outputs are scaled from 0 5 V but each voltage signal may correspond to a different range for concentration and temperature depending on the sensor calibration A example of typical values are shown in Table 1 Please note that the scaling factors will be affected by calibration ranges and the user should be aware of their sensor specific calibration Voltage Range Actual Range Low range
13. mples ging to line or by choosing File gt New Log File Select or create a CSV file using the Open File window Please note that if the selected file already exists new data will be appended at the end of the file with a new Field Separator Comma O Space Timestamp 2 MMDDYYYY HHMMSS O Seconds Frequency m E g Figure 5 FRConnect GP Data Options header line Once you have cho sen a save file the Data Options window will appear Choose the desired formatting options and which fields to log from the Data Options window as shown in Figure 5 For GP units equipped with the optional dual range calibration the range can be toggled from the Options Plotting Options window as shown in Figure 6 To plot data using the high calibration range check the box next to Use High Concentration Calibration Click the Start button to begin logging data In addition to being stored in the selected file a plot of the CO concentration measurements is shown in the FRConnect GP window Use High Concentration Calibration Line Thickness Yaxis Setting Automatic Fixed Ymin 0 0 BR Ymax 400 0 E ok R cancel Figure 6 FRConnect GP Plotting Options 4 Logged Datafiles The measurement data file is formatted as a comma separated values file csv by default allowing for easy importing into spreadsheet or plotting software A B G D E F G H J K L 1 Timestamp CO2 Low CO2
14. simply remove the entire folder from your PC and re extract from the zip file to recreate the folder The program executable is labeled FRConnect GP exe and double clicking this icon or a Desktop Shortcut will launch the program It is recommended that you connect the USB data cable to your computer prior to launching FRConnect GP however you may also refresh the program from the Options menu The port on which the GP is connected will likely be the only choice available OQptions ComPort COM however you may have to refer to the device manager if several serial port devices are connected to the computer Once the port is selected a connection to the gas probe will be created 3 2 Using the Interface Figure 4 shows the FRConnect GP interface The interface Eile KISTE has three main areas the log ComPort Refresh ging options the current read EE em change ing and start stop controls and LE Change the plotting area The top section shows the currently se CUTEDE Reading 293 7 ppm e sp lected datafile frequency and Time Elapsed 0 05 01 the specified external pressure value used to correct gas con centrations These settings can be modified via the change but tons situated on the right or from the menubar CO2 199 9 The middle section shows the current CO concentration reading and allows the user to start and stop logging plotting It also shows how long the cur rent loggin
15. t all users read the complete manual before use The Hardware section explains the physical attributes of the GP and its accessories The FRConnect GP User Interface section explains the software that is used to communicate with the gas probes in order to record data and adjust logging parameters The following Logged Datafiles section explains the structure and formatting of the datafiles recorded by FRConnect GP as well as what each field represents A Trou bleshooting section briefly covers some possible issues that may arise during normal operation of the software For further information or assistance please contact sup port forerunnerresearch ca 2 Hardware 2 1 Overview The GP sensor housing is constructed using a highly durable acetal Polyoxymethylene housing which has many advantages for field use such as high abrasion resistance and low water absorption The housing is cylindrical with a diameter of 51 mm and a length of 107 mm 120 mm including the electrical connector Forerunner s NDIR CO sensor is exposed to gases through a membrane covering the face of the GP housing This membrane allows gas transport to the sensor but does not allow any intrusion of liquid water GP 001 sensors are guaranteed waterproof to 1 m of water column whereas GP 002 sensors are waterproof to up to 3 m of water column The waterproofing of the sensor requires that users do not open the GP housing A tamper evident seal is placed on the GP
16. terval using the low Sille an AM range calibration ppm CO2 Low SD The standard deviation of CO2 Low during the interval ppm CO2 High The average CO concentration over the interval using the high range calibration ppm CO2 High SD The standard deviation of CO2_High during the interval ppm The average CO concentration over the interval using the low CO2_Low_Raw S range calibration ignoring user corrections ppm The standard deviation of CO2 Low Raw during the interval CO2 Low Raw SD ppm The average CO concentration over the interval using the high CO2 High Raw Steg range calibration ignoring user corrections ppm The standard deviation of CO2 High Raw during the interval CO2 High Raw SD ppm Temp The average temperature over the interval C The standard deviation of temperatures measured during the inter Temp SD val C Samples The number of samples that occurred during the interval 10 5 Troubleshooting This section provides a few example problems that may occur during use and the appropriate action that should be taken to resolve the issue For these issues as well as any others that arise please contact Forerunner Research Inc at 1 902 870 5220 or by emailing us at support forerunnerresearch ca e The GP does not seem to be outputting serial data using FRConnect GP or SE voltages Please ensure that the power supplied to the GP is between 5 and 24
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