Optical Methane Detector Brochure

Visit our website at www.heathus.com for customer testimonials and comparison documentation.Increase Speed, Accuracy and ProductivityThe Optical Methane Detector (OMD™) was specifi cally designed for the mobile inspection of buried natural gas distribution, transmission and gathering pipelines. This fi eld proven technology combines sensi-tivity, selectivity and speed through the use of optics and electronics.Field experience has proven that given adequate survey and meteoro-logical conditions the OMD increases productivity 50% or more over cur-rent mobile survey. A contributing factor to the increased productivity is the instantaneous response to leak indications versus the time delay present with current fl ame-ionization technologies. Much of the mainte-nance associated with fl ame-ioniza-tion units, including moving parts, external fuel gases, outside sources of dust, dirt, moisture and water ingress, is eliminated with the OMD.OMD™The OMD is mounted on the front of a sur-vey vehicle. It em-ploys an infrared (IR) light beam that shines across the front of the vehicle. An optical fi lter in front of the de-tector transmits meth-ane IR wavelengths from the light source. In the absence of methane, these wave-lengths are unaffected and produce a steady output signal from the detec-tor. The presence of methane causes a signal, audio and visual, which is transmitted to the display in analog and digital form inside the vehicle. The OMD can detect leak indications in concentrations of less than 1 part per million (ppm) at 10,000 measure-ments per second.The OMD operates reliably under a variety of environmental conditions including inclement weather, wind and temperatures from -20º F to +110º F. The OMD’s sensitivity is not affected by small fluctuations in the light beam caused by reasonable amounts of dust, dirt, water or snow. An internal calibration check cell is included so the operator can verify proper operation from the vehicle cab at any time before, during or after the survey, as well as alerting the opera-tor if conditions are not optimal. Installation on various types of sur-vey vehicles is very simple and can normally be accomplished in a mat-ter of hours. All cables are provided with the OMD including the power cable to operate the unit from the survey vehicle’s 12 volt battery. An RS232 port is available whereby a personal computer may be connected to acquire and save survey data.The OMD was designed and tested in a Gas Technology Institute (GTI) program. Optical Methane DetectorSystem Specifi cationsConfi guration: Double endedSensitivity: 1 PPM / meter CH4 at 25 MPHMeasurement Range: 1 to 200 PPMDisplay Ranges: 10, 30 and 90 PPMSelf Test: During boot upCalibration Test: Via operator, self containedCalibration: Via RS-232 through softwareBase Line Compensation: Via RS-232 through softwareDisplay: Backlit 2” x 6” graphics LCDOperator Interface: Sealed membrane switch overlayOperator Alarms: Audible with adjustable set pointSignal: High pitch increases with concentrationError: Low pitch for Warm up, Low Light, Failure & Battery LowSystem Power: 60 watts @ 12 VDCSystem Voltage: 10-16 VDCSystem Weight: External Sub-Systems: 17 pounds Power Box: 6 pounds Cables 4 pounds Internal Display: 3 poundsMechanical Mounting: Strut bracket mountInstallation Time: 2 hours (typical)External Housing Rating: NEMA 35 and IP 54Display Housing Rating: Spill proofExternal Sub-System Materials: Aluminum and plasticEnvironmental PCB Control: Conformal PCB coatingOperating Temperature Range: -22 o F to 122 o FOperating Humidity Range: 5 to 100% RHHeath Consultants IncorporatedHouston, TX713/844-1300 Fax: 713/844-13091-800-HEATH-USOMD™Optical Methane DetectorHOW TO ORDERPart No. 2500100 - OMD, Complete, 32” Crossbar (plus 6”)Part No. 2500300 - OMD, Complete, 51” Crossbar (plus 6”)Part No. 2500400 - OMD, Complete, 63” Crossbar (plus 6”)www.heathus.com 2/09