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1.2.2Additional Warranty DisclaimerThe more frequently a system is checked, the greaterwill be the system’s reliability.For the highest reliability, a completely redundantsystem is necessary.The detector head is intended to determine if certainminimum hydrocarbon gas concentrations exist at asingle point (sensor location) in space. The sensor willnot sense all explosive gases or concentrations of gasthat do not come in contact with the sensor. Concentration readings should not be relied upon to providemore than an upscale or downscale trend in gas concentration. This sensor is not intended for use as ananalyzer or process monitor. Its only function is to givean indication of the gas concentration at the sensor. Gastype determinations are a best guess and should be usedonly as an indication.EXCEPT AS SPECIFICALLY PROVIDED ABOVE,DELPHIAN CORPORATION DISCLAIMS ALLOTHER WARRANTIES WITH REGARD TO THEPRODUCTS OR SYSTEM AND SHALL NOT BELIABLE OR RESPONSIBLE FOR ANY LOSS, DAMAGE, OR LIABILITY DIRECT, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL ARISING OUT OF OR IN CONNECTION WITH THESALE, USE/MISUSE, PERFORMANCE OR THEINABILITY TO USE THE PRODUCTS BY THEUSER.1.3WarningsBECAUSE OF THE DANGEROUS NATURE OFTHE GASES TO BE MONITORED, SPECIAL OPERATING CONSIDERATIONS ARE INVOLVED.BE SURE TO READ ALL OF THE WARNINGS INTHIS SECTION AND IN THIS MANUAL CAREFULLY. THIS SECTION DOES NOT CONTAINALL OF THE WARNINGS IN THIS MANUAL, NORIS THERE ANY GUARANTEE THAT ALL APPLICABLE WARNINGS ARE CONTAINED IN THISMANUAL OR IN OTHER DELPHIAN MANUALS.WARNING: THIS OPERATIONS MANUAL DESCRIBES ONLY THE OPERATION OF THE IRDETECTOR HEAD. THIS DOCUMENT IS NOTINTENDED TO BE USED BY ITSELF WHEN USEDWITH SAGE OR FLEXIRACK SYSTEMS. IT ISVERY IMPORTANT THAT YOU READ ANDUNDERSTAND THE OWNER’S MANUAL ANDTHIS OPERATION MANUAL BEFORE INSTALLING OR OPERATING OR SERVICING THIS EQUIPMENT. IF ANY INSTRUCTION IS UNCLEAR, CALL900-105cDELPHIAN TOLL FREE AT 1-800-288-3647 BEFORE PROCEEDING.WARNING: If products are suspected of being damaged or defective, do not install or operate. Call Delphian Customer Service for a return material authorization number (RMA#). Damaged or defective productsshould be shipped prepaid, with the return materialauthorization number plainly visible on the outside ofthe carton, to the Delphian plant or to the authorizedrepair service center specified by Delphian CustomerService.WARNING: All individuals whose safety is related tothis equipment must be instructed carefully about itsoperation and limitations as well as about the risks ofcombustible gases and explosions.WARNING: In the event that the system is used todetect a gas other than the ones which have beenincluded in the sensor’s determination table (see Chapter 3 for details), there can be no guarantee that anappropriate alarm will occur when a flammable concentration of the actual gas to be detected appears.WARNING: To avoid sampling losses, for example,when using ported sensors, only sample lines recommended by Delphian or known to the user as beingcompatible with the environment should be used. Somematerials are also sensitive to ultraviolet radiation andhigh temperatures.WARNING: DESENSITIZING & G OR POISONING GASES)Most combustible hydrocarbon gases and vapors areinterfering gases. The presence of many (interference)gases may cause the detector head to provide misleading readings. Acetylene and high concentrations ofammonia will block the operation of the sensor and maycause a fail indication.WARNING: The sensor is designed to shed water.However, if the flame arrestor gets wet, the sensor maynot function properly until it is dry. If the sensingsystem gets wet, it may act unreliably until it becomesdry again.WARNING: The flame arrestor shield must always beinstalled on the flame arrestor.WARNING: This sensor must be maintained on aregular basis. The optics should be cleaned whennecessary and the zero should be checked on a regularPage 9

scheduled basis. Sensors, which require substantialadjustment at zero tests, should be monitored closely.When a sensor is first installed, it should be verifiedthat normal conditions exist by checking frequently,before deciding to go to longer intervals betweensystem checks. NOT ALL SYSTEM FAULTS WILLCAUSE A FAIL SIGNAL. A SYSTEM CHECK WITHCOMBUSTIBLE GAS IS THE ONLY WAY TO BESURE THE SYSTEM WORKS PROPERLY. PROPERSYSTEM CHECKS IS YOUR PRIMARY METHODOF INSURING CORRECT SYSTEM RESPONSE.WARNING: Not all options or accessories have beentested or approved by FM Approvals, BASEEFA orCSA.WARNING: THE DATA AND SUGGESTIONSIN THIS MANUAL ARE BASED ON INFORMATION WE BELIEVE TO BE RELIABLE. THEYARE OFFERED IN GOOD FAITH BUT WITHOUTGUARANTEE. THE CONDITIONS, MAINTENANCE AND METHOD OF USE OF OUR PRODUCTS ARE BEYOND OUR CONTROL. TO OBTAIN THE MAXIMUM VALUE, THE USER MUSTRECOGNIZE HIS RESPONSIBILITY. NOTHINGCAN SUBSTITUTE FOR GOOD ENGINEERINGJUDGMENT AND COMMON SENSE. EVEN WHENINSTALLED AND OPERATED BY QUALIFIEDPEOPLE, DO NOT EXPECT TO DETECT DANGEROUS GAS LEVELS IN ALL OF THE CONDITIONS THEORETICALLY POSSIBLE.1.4MarkingsThese markings are for safety. They may also berequired to maintain testing agency approval. Themarkings should be placed in a location at the detectorhead where they will be visible after installation and indirect sight during the routine periodic calibration andservicing. The user should insure that the markings areon clearly legible, visible and permanent labels or tags.1. The words “CAUTION” and “ATTENTION” shallbe in capital letters at least 3 mm high and the balanceof the wording shall be in capital letters at least 2.5 mmhigh. These markings are:“CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BYQUALIFIED PERSONNEL ONLY. READ ANDUNDERSTAND INSTRUCTION MANUALS COMPLETELY BEFORE OPERATING OR SERVICING.”and“ATTENTION: POUR DES RAISONS DEPage 10SÉCURITÉ, CET ÉQUIPEMENT DOIT ÊTREUTILISÉ,ENTRETENUETRÉPARÉUNIQUEMENT PAR UN PERSONNEL QUALIFIÉ.ÉTUDIEZ LE MANUEL D’INSTRUCTIONS ENENTIEN AVANT D’UTILISER, ENTRETENIR OUDE RÉPARER L’ÉQUIPEMENT.”2. At the detector head, which is an explosion proofassembly, these markings should appear:“CAUTION - THIS AREA MUST BE KNOWN TOBE FREE OF FLAMMABLE CONCENTRATIONSPRIOR TO OPENING THIS ENCLOSURE.” Thesewords should be in capital letters at least 5.0 mm highand marked in a permanent manner. The marking shallbe conspicuously visible prior to removal of the cover.3. The temperature range within which the detectorhead will perform (the most restrictive temperaturerange between the electronics and the sensor) shouldappear in a clearly legible, visible, and permanentmanner at each detector head.TEMPERATURE RANGE:The Detector Head is not intended to be used in temperatures below –13 F (-25 C) nor above 158F ( 70 C).Consult Delphian before use in areas suspected ofbeing above or below these limits.1.5Installation Precautions1. The sensor is intended to be mounted in a verticalposition with the flame arrestor pointing down towardsthe floor or ground. If it is mounted in any otherposition it may not work optimally.2. The detector head is designed and tested for use inexplosive atmospheres. It is not suitable for highlycorrosive atmospheres. Consult Delphian before usingit in areas suspected of being corrosive atmospheres.Explosion-proof integrity cannot be maintained if thedetector head is not installed in accordance with theNational Electrical Code of acceptable practice for thespecific class of hazardous atmosphere at the sensor.The flame arrestor, the sensor head, and the conduit boxaccess cover must be completely screwed into place tomaintain integrity.3. It is recommended that when new sensors are first putinto use, sensor accuracy be checked on a routine basis.If repetitive function checks show minimal deviation,then the period between checks may be extended.Likewise, if routine checks indicate excessive deviations the sensor should be returned to Delphian forrepair/replacement. Because small amounts of com900-105c

bustible gas in the air can cause unreliable readings, theuse of “Zero Air” is recommended. Additionally, knownmethane-air mixtures may also be used as span gas tocheck the detector's function.1.6Flame Arrestor PrecautionsThe Delphian FPIR sensors are designed to be operatedin their housing with Delphian sintered metal flamearrestors secured tightly in place.Do not operate the sensor without the flame arrestor inplace.Do not operate the sensor without the flame arrestorshield in place.Do not operate the sensor if the flame arrestor isdamaged.Do not paint or otherwise coat the flame arrestor.Do not allow the flame arrestor to become wet orclogged with dust, mud etc.Steam, other vapors, aerosols, or other materials maycoat flame arrestors, impeding or blocking sample flowto the sensor. The passage of gas through the flamearrestor is essential. Warning: There will be no alarmnor will a fault indication occur if the flame arrestor isclogged. Frequent function checks and the use of Delphian splash guards are recommended if the atmosphere around the sensor is dirty or wet.The Delphian FPIR CHC head incorporates a processorand interface module that provides analog currentoutputs of 1-5 mA or 4-20 mA and/or a digital RS-422/485 output.Entering Atmospheres Potentially Containing Toxicor Combustible GasesAny atmosphere which potentially contains toxic gassuch as hydrogen sulfide or carbon monoxide should betested first from outside the area to establish safe levelsbefore entry. In addition to testing for toxic gases, testsfor oxygen deficiency and combustible gas should berequired by the user and/or regulatory agency. Oxygendeficiency will not alter the readings of Delphian FPIRsensors but could alter the accuracy of portable gasdetectors. Operators should always wear suitable breathing apparatus when entering an unknown atmosphere.Fill out and return Delphian’s warranty registrationcard. If the shipment is damaged, call Delphian’s tollfree hot line number 1-800-288-3647, in NJ call 201767-7300 and request a return authorization numberfrom Customer Service.Use of Sensor AccessoriesSafety and accuracy of gas detection instruments maybe improved in certain environments through the use ofappropriate accessories, such as the foam splash guard.Any and all such accessories must be installed and usedin accordance with their manual.CAUTION: Not all of these accessories have beenapproved or tested by CSA, BASEEFA or by FMApprovals and many will slow response time.900-105cCompatibilityThe Delphian FPIR Detector Head is compatible withthe SAGE computerized gas detection system, Delphian controllers and the SLAM alarm module.The processor module features a multipurpose digitalreadout that displays gas concentration and gas type ifa CHC is present at the sensor. The processor providesoperator prompts during system checks as well asextensive system diagnostic messages.1.7UnpackingUnpack the shipping carton(s) and determine whetherthe order is complete as received. In the event ofshipment damage or for purposes of future correspondence, record the following in case of transit claim:purchase order number & datecarrier waybill number & datedate receivedserial numberuser ID number (if assigned).1.8StorageWhen storing gas detection equipment, select a drylocation. Water condensation or corrosive atmospherescan easily damage electronic o

Page 6 900-105c 1. Introduction & Overview This manual furnishes guidance to the informed user on how to install, operate, and service the Delphian Fixed Point InfraRed hydrocarbon detector heads:the Determinator, Model 850 for percent LEL detection and the Remediator, Model 855 for percent by volume detection.If used with a SAGE or Delphian controller such as