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Boreal Laser Inc.

GasFinder2 Operation Manual — Appendices

July 17th 2017

Содержание GasFinder2

Страница 1: ...al Boreal Laser Inc GasFinder2 Operation Manual July 17th 2017 Part No NDC 200023 C Menu ver V1 10 c P o r t a b l e S y s t e m 12846 146 Street NW Edmonton Alberta CANADA T5L 2H7 Phone 1 780 488 517...

Страница 2: ...200025 A User Manuals GasViewOP NDC 200022 B GasViewMC NDC 200013 B GasMap NDC 200007 A Accessory Manuals 4 20mA Module NDC 200014 A RF Barrier Module NDC 200027 A DCR Module NDC 200016 A Diagnostic...

Страница 3: ...se install in accordance with these instructions WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK Do not expose this equipment to rain or moisture Do not use the unit near water and do not immerse in any...

Страница 4: ...ion 3 1 Portable use 3 1 Retroreflectors 3 1 GasFinder2 3 1 Fixed Location 3 3 Reflectors 3 3 Light Values 3 3 Condensation 3 3 Reflector types 3 4 GasFinder2 3 5 General 3 6 GasFinder Alignment 3 6 A...

Страница 5: ...Absorption Lines 8 1 Gas Detection with a Laser 8 2 Retroreflectors 8 3 Glossary of Common Terms and Abbreviations 8 4 Section 9 Appendices 9 1 Appendix A Menu Structure 9 1 Appendix B Status Codes 9...

Страница 6: ...Laser Inc GasFinder2 Operation Manual July 17th 2017 Power Supply Measuring landfill gas Measuring on smelter floor Battery Measuring through a duct Roof line installation in a fixed location Plastic...

Страница 7: ...er2 Operation Manual July 17th 2017 GasviewOP Software Display Large X Y Mount for fixed location Small X Y Mount for tripod Vortex Cooler with GasFinder2 Air Inlet Air Valve Cold Air Diffuser Thermos...

Страница 8: ...e will be charged at cost This warranty does not apply to situations where system performance has been compromised as a result of customer negligence or abuse or damage resulting from natural disaster...

Страница 9: ...ough the atmosphere to the retroreflector and returns to the GasFinder2 where it is focused onto a photodiode detector A portion of the laser beam is passed through an onboard reference cell to provid...

Страница 10: ...units memory etc System Menu contains arrays real time clock baud rates etc Password Protected Menu contains calibration values Details of the menus are given in Section 5 and a flow diagram is shown...

Страница 11: ...4 20mA current loop Baud Rate kbps 0 3 1 2 2 4 4 8 9 6 19 2 38 4 57 6 115 2 230 4 kbps Tripods Large Tripod Minimum Height 430mm 16 9 inches Maximum Height 2100mm 82 7 inches Weight 6 0kg 13 2lbs Smal...

Страница 12: ...is the recommendation of Boreal Laser Inc that as with ANY LASER SYSTEM the user operator should avoid staring directly into the output aperture of the instrument Note that the laser beam is infra re...

Страница 13: ...can be tolerated for a short time 1hr Note that the lower limit for an HF system is 100 C Power supply the GasFinder2 operates from a regulated 12VDC 2A supply This can be from a 12V battery or a pow...

Страница 14: ...required Ladder and or man lift as appropriate B Optional Recommended Two way radios if permitted Range finder binoculars for portable work at different locations Equipment Check Verify that all the e...

Страница 15: ...o a tripod or placed on a wall in any convenient location The angle of the tape can be adjusted to give an adequate signal return provided this does not degrade the R2 Where retros are used on longer...

Страница 16: ...release fitting on the X Y mount by pressing the small button a on the end of the lever b and moving it anticlockwise until the brass button c is about 3mm above the base There will be a click when th...

Страница 17: ...xceeded 16 368 When this happens the receiver saturates and the displayed light value could read very low 200 In this situation the gas concentration readings will be in error and it is also possible...

Страница 18: ...probably the maximum number that can be economically used as the cost becomes prohibitive as the number of retros increases At path lengths greater than 750m maintaining the correct alignment becomes...

Страница 19: ...the operator 3 Remove the GasFinder2 from the case and place it onto the X Y mount The rear of the GasFinder2 locks under the angle at the rear of the mount and the two red thumb screws at the front...

Страница 20: ...lue reading used for precise alignment Note The reflected beam of the visible laser is very bright and should not be observed through the scope The range of the light value is between 1000 and 16 368...

Страница 21: ...the eye laterally will cause the cross hairs to move across the retro Remove the caps covering the adjustment screws Turn the zoom on the scope to a maximum Focus the eye piece so the retros are shar...

Страница 22: ...l alignment This is where the returning light value and the signal strength are at a maximum Magnetic Fields It has been found that exposure to high magnetic fields as would be experienced in an alumi...

Страница 23: ...Serial input to GasFinder2 4 PCDTR Data Terminal Ready Serial input from GasFinder2 5 GRD Signal Ground Digital Analogue 6 Ramp System Timing Clock Analogue output from GasFinder2 7 I sink 4 20mA loo...

Страница 24: ...ns data_header Any 6 gas_concentration 0 99999999 8 confidence_factor 0 99 2 distance 1 9999 4 light_value 1 16384 5 date_time Year Month Day 19 Hour Minute Sec serial_number Any 10 status_code 1 FFFF...

Страница 25: ...n pages 4 6 and 5 4 These data are comma delimited and an asterisk signifies the end of a string Each string is terminated by a carriage return and a line feed Explanation GFDBG Periodically strings c...

Страница 26: ...res to carry the data 200 to 300m They both require a small amount of power to operate These are two small units one connected to the GasFinder2 and the other to the computer with a short data cable T...

Страница 27: ...nd baud rate to the correct value typically 9600 Also select 8 data bits no parity and 1 stop bit Flow control should be set to none Click OK If the computer is correctly connected to the GasFinderMC...

Страница 28: ...A is equivalent to the maximum ppmm or greater If the Distributed Control System DCS is capable of a full 0 20mA resolution the following values are configured 3 6mA indicates a system fault 2 6mA ind...

Страница 29: ...r the parameter display adjustment menus The arrow keys can be used to move between the various menu items When the operator is in the menu system pressing the ENT key will enter the adjustment mode o...

Страница 30: ...rement When the light value drops below a factory set value usually 1000 the system will give a status message in the display indicating low light no reading To increase the light value re align the i...

Страница 31: ...ts chosen to display the concentration in the main display The units can be adjusted to display ppmm parts per million metre the total amount of gas along the path ppm parts per million average concen...

Страница 32: ...in the presence of factors such as steam traffic or thermal scintillation Boreal Laser Inc should be consulted before changing this value from the factory setting 10b Min acceptable R2 This item is th...

Страница 33: ...he Average Window set to 58 then the recording time is nearly 3 months For a dual gas system recording times will be halved a Wrap The data can be stored in the buffer in a wrap mode where data overwr...

Страница 34: ...and the resulting readings are called sweeps A series of sweeps are averaged to form a scan When the data for the sample scan reference cell scan and associated readings are incorporated into the calc...

Страница 35: ...ovides a convenient way of checking the voltage of the 12VDC power supply If the voltage falls below 11 5V a flashing B will appear in the top right corner of the display If the voltage falls below 11...

Страница 36: ...h 2017 30 Service Menus These menus are accessible only for Boreal Laser personnel and their representatives 31 Password Protected Menus These menus are accessible only for Boreal Laser personnel and...

Страница 37: ...be determined from experience See cleaning procedure on next page In areas with a lot of dust and or humidity some lubrication of the X Ymount may be required In a fixed system if movement of the moun...

Страница 38: ...s performance The average value for the light level should be kept at the recommended values as determined at the initial installation Many dusts especially aluminium oxide are very abrasive and care...

Страница 39: ...ll automatically resume once the obstruction has been removed e g fog lifts rain stops or vehicle equipment is moved No data transmission from GasFinder2 to the computer Check that the correct baud ra...

Страница 40: ...with 30 minutes of data from the gvl text file This will allow Boreal Laser Inc to diagnose the problem Display reads Unlocked No Reading If the signal being analysed by the onboard electronics falls...

Страница 41: ...ct the GasFinder2 to a computer and run GasViewOP Click on Port and then Arrays Plot Enable Note that it is important to verify that there is a check mark by the display of Arrays Plot Enable At the G...

Страница 42: ...t and then Command Interface Click on the window showing No Command and this will show a table listing all the commands available Click on Arrays Dump Click on Send The computer screen will show a ser...

Страница 43: ...am will move completely off the retro array This movement is referred to as translational In practice significant translational movement is unlikely to occur as the post is usually fastened to a solid...

Страница 44: ...er types are not stable enough To comply with safety regulations the height of a scaffold cannot exceed three times the width of the narrowest base dimension This gives a very stable platform The scaf...

Страница 45: ...pansion and contraction of the metal structure carrying the laser mount which twists with respect to the longitudinal axis of the original laser path This causes the laser beam to move away from the r...

Страница 46: ...to be traversed horizontally and vertically until the light level drops Note where the cross hairs are in the scope at these positions see figure 4 and position the GasFinder2 so that the cross hairs...

Страница 47: ...rinciple except that the tube mirrors and crystal are all combined in a small package using semiconductor technology The diode laser is composed of a pn junction as in the light emitting diode LED and...

Страница 48: ...absorption wavelength for this target gas See figure 2 The laser operating wavelength is kept stable by housing it in a temperature controlled box A fluctuating saw tooth current is used to drive the...

Страница 49: ...he rear behind the glass See figure 4 A retroreflector is different in that the reflected light returns in the same direction as the incident light The beam is reflected 180 degrees A retroreflector i...

Страница 50: ...troller A small device using a microcomputer microcomputer A small computer the size of a postage stamp micron 0 000 001 part of a meter modulated Like a wave molecule A collection of atoms bonded tog...

Страница 51: ...d A B B only Battery Voltage Gas B Detection Limits enter Adj Gas Type 12 35 A B escape Diabled A B B only esc esc ent esc esc esc esc esc ent esc esc esc ent esc esc esc Internal Temperature Min acce...

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Страница 53: ...tions the most common status code is 1 This is actually 0001 but the software ignores the leading zeros and indicates a status code of 1 This corresponds to 0000_0000_0000_0001 and indicates an instru...

Страница 54: ...the total amount of a specific gas for example HF in the path of the laser beam between the transmitter unit and a reflector This is a total path measurement The units are parts per million metres or...

Страница 55: ...l procedure to compare curves or numeric arrays is the Linear Least Squares Regression analysis This analysis results in a measure of the similarity R2 between the waveform of the sample gas and that...

Страница 56: ...as the R2 s decrease and equal zero when there is no gas present As the signal from the gas becomes stronger the effect of noise both electronic and optical is reduced and the R2 s will increase i e t...

Страница 57: ...of any gas at STP 22 41 litre mole Therefore at STP 1m3 of gas 1000 moles m3 22 41 44 6229 moles m3 1ppm of any gas 1 x 10 6 44 6229 x 10 6 mol m3 1ppm HF 20 006 x 44 6229 g x mol 1 000 000 mol x m3...

Страница 58: ...cters to keep the interface lean All commands are terminated by carriage return Enter Commands are responded to using the GasFinder2 checksummed output line convention GF CER COK n XX where XX is the...

Страница 59: ...ference cell is compared with this stored waveform at frequent intervals Any significant deviation generates a status code to alert the user to a potential calibration problem The GasFinder2 software...

Страница 60: ...y Boreal Laser Inc is marked with a yellow band The cable length should not exceed 30m If a longer distance is required modem options are available All cables have a twisted pair 4 20mA connection App...

Страница 61: ...Enabled the internal logging option is activated Log Memory Records This item lists the number of records currently in the memory The storage capacity is 131 072 lines Recording a data point every se...

Страница 62: ...hat the time for one sample is 1 1 second 33 30 50 samples will usually ensure that one reference cell check is included in the calculation The time for a one minute average will be 55 seconds 60 1 1...

Страница 63: ...duced a combination power supply and radio modem kit called BL PSM1 Connection diagram Cable A Radio to GasFinder2 Cable B Radio to Computer Cable C Power to Radio In cases where the computer does not...

Страница 64: ...Gas Shift Enable Enable Disable Centre Line Menu Attn Light Compensation output lin menu Min Attn Index Serial Password Protected menu Checked by Light Value Distance Ref Light Ref Cell ppmm Date Data...

Страница 65: ...sure Accessories Vortex Cooler Kit Tripods Tripod Large Manfrotto Tripod Small Manfrotto Tripod Head Ball Manfrotto Hex plate Power Supply Battery Battery Cable Battery Charger Power Supply Single cha...

Страница 66: ...9 16 Boreal Laser Inc GasFinder2 Operation Manual Appendices July 17th 2017...

Страница 67: ...eal Laser Inc GasFinder2 Operation Manual Drawings July 17th 2017 Section 10 Drawings 1 Universal enclosure base PK1023UE A Rev D 2 Universal enclosure JB0102UE A Rev A 3 GasFinder2 Dimensions GF D 3D...

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