Heath-consultants Optical Methane Detector (OM) Manual de usuario Pagina 1

1OMDUser’s ManualHeath Consultants IncorporatedHouston, TX713/844-1300Fax: 713/844-13091-800-HEATH-USwww.heathus.comHeath...Leadership, Innovation,

10Chapter IIINSTALLATION PROCEDUREIt is virtually impossible to predict the exact installation proce-dure for every different type of vehicle on the m

11INSTALLATIONis not flat, some other type of brackets, supports, etc. will needto be used to attach the strut channels to the front of the ve-hicle.

12INSTALLATIONAppendix A at the end of this manual. Many vehicles havevents below the bumper to allow airflow into the engine com-partment. This is

13Cable assemblies installation:Each cable assembly for the OMD is uniquely constructed sothat it cannot be connected to the wrong mating connector.Fi

14INSTALLATIONWhen routing cables from the cab to the front of vehicle, fasten thecables to fixed parts of your vehicle with tie wraps. Tie wraps are

15Vehicle Grounding StrapA vehicle-grounding strap is included in the OMD mountingkit. The purpose of this strap is to prevent the buildup of anElectr

16 ·Verify that the mounting location of the strap will not causeit to come in contact with any rotating parts, such as drivewheels or drive shaft

17Photos of Protective CagesINSTALLATION

18Chapter IIIOPERATING PROCEDURESStart Up:1) Turn on the SYSTEM POWER by pressing the “SYSTEMPOWER” button. The red LED above the SYSTEM POWERbutton

19OPERATING PROCEDURES60 minutes. The system is stable when the PPM readingsbecome consistant.4) Press the CALIBRATION TEST button. The red LED abov

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20OPERATING PROCEDURES6) Set the SPEAKER VOLUME of the alarm to the desired levelby pressing either the SPEAKER VOLUME INCREMENTor DECREMENT button to

21LIGHT:In this position, numbers in the range from 0 to -1200 are dis-played, indicating the amount of light reaching the detector withthe lower numb

22OPERATING PROCEDURESUse a soft, lint free cotton towel to clean the lenses. The lightlevel is also affected by the alignment of the Light Source an

23PPM RANGE:Consecutively pressing the PPM RANGE button allows theformatting of the display with full-scale settings of 10, 30, or90 PPM. The ranges

24OPERATING PROCEDURESPRESENT0.0MAXIMUM16.6SETPOINT30.030 PPM0 PPMHere is a 16.6-PPM leak displayed in the 30-PPM range.PRESENT0.0MAXIMUM16.6SETPOINT3

25ALARM SETPOINT:The audible alarm allows the driver to only respond to signifi-cant events, rather than requiring constant observation of themethane

26OPERATING PROCEDURESERROR MESSAGES:When a concentration of methane greater than the ALARMSET POINT enters the light path, a high pitched alarm issou

27CAUTION:BECAUSE OF INHERENT LIMITATIONS, LIQUIDCRYSTAL DISPLAYS SHOULD NOT BE SUB-JECTED TO EXTREMES OF TEMPERATURE ORHUMIDITY. IF THE INSTRUMENT I

28Chapter IVALIGNMENT PROCEDUREIn order for your OMD to function properly, it is crucial thatthe optical path be aligned properly. The OMD components

29ALIGNMENTThen, the alignment screws on the Receiver are used to optimize thelight level as observed on the Display. This last step directs theoptic

3TABLE OF CONTENTSSPECIFICATIONS ... 5CHAPTER IOVERVIEW ...

30Receiver Alignment:Next, remove the paper and clear the light path of all obstacles.Observe the “LIGHT LEVEL” on the display. The alignmentscrews o

31Chapter VCALIBRATION CHECKIt should be noted that the OMD, like all survey instruments, isnot designed for absolutely accurate quantitative analysis

32CALIBRATIONVerifying Calibration with External Cell:The standard external calibration cell is 0.6 inches thickinternally. This is approximately 1/1

33CALIBRATION

34Chapter VIMAINTENANCE INFORMATIONGeneralIn general the OMD is practically maintenance free. Normally,the only maintenance required is to clean the

35PROBLEM SOLUTION“Light” alarm occurs: Clean lenses. If alarmcontinues, re-align optics.“Warm-up” alarm occurs: Turn light off until systemwarms up.

36PROBLEM SOLUTIONDisplay is blank: Press and hold contrastdown button for approx.15 seconds or untilwriting appears on screen.If display is still bla

37Chapter VIISERVICE INFORMATIONWarranty and Warranty RepairsThe OMD is warranted to be free from defects in material andworkmanship for one (1) year

38SERVICEThe following suggestions will expedite the repair of yourinstrument:·Package carefully, using the original shipping carton if available, and

39Customer Service Phone 1-800-HEATH-US(1-800-432-8487)CORPORATE HEADQUARTERSHeath Consultants Incorporated9030 Monroe RoadHouston, Texas 77061Phone:

4CHAPTER VIMAINTENANCE INFORMATION ... 34General ...

40APPENDIX AHEATH CONSULTANTS INCORPORATEDSURVEY PROCEDURES - MOBILE OMDPROCEDURESI. Planning the SurveyA. Specific Survey RequirementsDuring the init

415. The names and telephone numbers of persons tocontact for location of buried telephone and electriccables.6. Obtain any information or location of

42II. Equipment RequirementsA. A vehicle for the terrain to be surveyed should be used. Itshould have good visibility and maneuverability and mustbe

43the consultant should make every effort to place the OMDover available openings. When the detector senses thepresence of methane in the sample, an

44of the designated streets, particularly where a single mainexists, with long services running to the opposite side ina wall-to-wall pavement area. E

452. Grade 2(B) - A leak that is recognized as being non-hazardous at the time of detection but requiresscheduled repair locations are completed.3. Gr

46A. Moisture Content of the SoilThe higher the moisture content, the more difficult itbecomes for gas to vent and thus to be picked up by theinstru

47D. Gas PressureLow-pressure gas systems generally will vent much moreslowly and poorly than higher pressure systems. Highsoil moisture content ca

48APPENDIX Alow gas to vent rather well. These cracks are subject tofilling with water if there is thawing or rain which tem-porarily reduces venting.

49APPENDIX AIn heavily paved areas, special care should be taken tosample as many venting locations as possible, includingavailable openings.

5SYSTEM SPECIFICATIONSOMDTM System SpecificationsConfiguration: Double - endedSensitivity: 1 PPM / meter CH4Measurement Range: 1 to 200 PPMAccuracy: ±

50HEATH CONSULTANTS INCORPORATEDOPERATING STANDARDS - MOBILE OMDTM SURVEYGENERAL SPECIFICATIONSI. Purpose of SurveyThe purpose of the survey is to ins

51V. Transportation RequirementsAny vehicle designed for the terrain to be covered.VI. Method of Operation A. Maintenance of InstrumentsEach i

52In most paved locations the survey can be conducted bydriving along the curb or the side of the street where themain is located. However, in the in

53VII. Centering of Leakage DetectionWhenever combustible vapors are detected in the soil orsubstructure atmospheres, additional tests will be con-duc

54IX.Production per Day Coverage per day will vary due to local conditions and leak indication frequency.X. Report Requirements A. Any leak ind

55APPENDIX BDRAWINGS1 INSTALLATION ISOMETRIC2 INSTALLATION ERROR # 13 WIRING DIAGRAM 1 OF 24 WIRING DIAGRAM 2 OF 2

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6SYSTEM SPECIFICATIONSSystem Weight: External Sub - Systems: 17 pounds Power Box 6 pounds Internal Display 3 pounds Cables 4 poundsCro

60 USING ADOBE ACROBAT READERThe OMD WINCAL and User Manuals are included on the OMDWINCAL CD-ROM.Both manuals are in the portable document format (.p

61 Declaration of ConformityManufacture’s Name: Heath ConsultantsManufacture’s Address: 9030 Monroe RoadHouston, TX 77061Model: Optical M

7Chapter IOVERVIEWThe Optical Methane Detector (OMD™), is the first of the“next generation” leak detection systems which address thehigh cost presentl

8The OMD operates reliably under a variety of environmentalconditions including dry weather, snow, ice and temperaturesfrom -22° F to +122° F. Its se

9auto exhaust and swamp or sewer gas. Due to the selectivity of theOMD, false positives caused by auto exhaust are greately mini-mized.NEWExperienced