Transmitter ExSens-D BG-WT Article-No.: 252001 Tox ExTox Ex ...
Transmitter ExSens-D BG-WT Article-No.: 252001 Tox ExTox Ex ... Transmitter ExSens-D BG-WT Article-No.: 252001 Tox ExTox Ex ...
Transmitter ExSens-D BG-WTArticle-No.: 252001InstallationPlace : Close to potential sources of release, if known. Otherwise near to thefloor (for gases heavier than air) or ceiling (for gases lighter than air,for example hydrogen, methane, ammonia)Position : sensor opening to be placed downwardsFixing : drilling jig as Download on our ExTox HomepageTerminal Assignment :ABU+GND4-20 mAARS 485-InterfaceBRS 485-InterfaceU+ Power supply 24 VGND Ground (Power supply and current output)4-20 mA Current output 4-20 mALine Length : max 1,000 m when using ExTox-Cable 6 x 0.8 mm(corresponds to a wire resistance of 9 Ω)Time of Stabilisation : approx. 1 min (90%), approx. 20 min (99%)UseDescription of the MeasuringPrincipleCross Sensitivity: The measured gas reaches two ceramic blended, electrically heatedplatinum coils. One of these coils is catalytically coated, so thatflammable gases oxidize there with oxygen and cause a rise intemperature. This rise in temperature is evaluated and has to beconsidered as size for the measured gas concentration.: Catalytic combustion sensors react upon every type of flammablegases and vapours. The sensitivity decreases to higherhydrocarbons, while the response time increases.Special Influences : ▪ Some substances, as silicones, halogenated hydrocarbons, leadtetra-ethyl,sulphur compounds and organic phosphorcompounds lead to partly irreversible losses of sensitivity (sensorcontamination)▪ A linear measuring signal cannot be secured at oxygenconcentrations < 10 % (v/v).▪ Alarm levels from 10 % LEL (with higher hydrocarbons from 20% LEL)Sensor Lifetime : typical: 2-5 years, depending on operation conditionsMaintenanceIntervals : Minimum every half year.We recommend to keep EN 50073 and national regulations (orGerman BG Chemie-Information BGI 518)Test Gas (Zero Point) : Ambient air (free from measured gas) or synthetic airTest Gas (Sensitivity) : 0.4 to 0.8 Vol.-% propane in airTest Gas Application: 0.5 to 1 l/min by means of ExTox-Calibration Adapter for minimum60 sSensor Element,Article No. 620000ReplacementFurther Information : EN 50073, BG Chemie-Information BGI 518 (German version only)This Data Sheet is at the same time a type specific supplementto the Instruction Manual ExTox Transmitter ExSens-D/Sens-D.(Subject to technical change)ExTox GmbH ● Hildebrandstraße 5 ● D-44319 Dortmund ● Tel. +49 231 589 409-0 ● Fax +49 231 589 409-10Internet: www.extox.de ● mail to: info@extox.de252001_ExSens-D_BG-WT_e_V8.doc,06/02/2005,Seite 2 von 2
<strong>Transmitter</strong> <strong><strong>Ex</strong>Sens</strong>-D <strong>BG</strong>-<strong>WT</strong><strong>Article</strong>-<strong>No</strong>.: <strong>252001</strong>InstallationPlace : Close to potential sources of release, if known. Otherwise near to thefloor (for gases heavier than air) or ceiling (for gases lighter than air,for example hydrogen, methane, ammonia)Position : sensor opening to be placed downwardsFixing : drilling jig as Download on our <strong>Ex</strong><strong>Tox</strong> HomepageTerminal Assignment :ABU+GND4-20 mAARS 485-InterfaceBRS 485-InterfaceU+ Power supply 24 VGND Ground (Power supply and current output)4-20 mA Current output 4-20 mALine Length : max 1,000 m when using <strong>Ex</strong><strong>Tox</strong>-Cable 6 x 0.8 mm(corresponds to a wire resistance of 9 Ω)Time of Stabilisation : approx. 1 min (90%), approx. 20 min (99%)UseDescription of the MeasuringPrincipleCross Sensitivity: The measured gas reaches two ceramic blended, electrically heatedplatinum coils. One of these coils is catalytically coated, so thatflammable gases oxidize there with oxygen and cause a rise intemperature. This rise in temperature is evaluated and has to beconsidered as size for the measured gas concentration.: Catalytic combustion sensors react upon every type of flammablegases and vapours. The sensitivity decreases to higherhydrocarbons, while the response time increases.Special Influences : ▪ Some substances, as silicones, halogenated hydrocarbons, leadtetra-ethyl,sulphur compounds and organic phosphorcompounds lead to partly irreversible losses of sensitivity (sensorcontamination)▪ A linear measuring signal cannot be secured at oxygenconcentrations < 10 % (v/v).▪ Alarm levels from 10 % LEL (with higher hydrocarbons from 20% LEL)Sensor Lifetime : typical: 2-5 years, depending on operation conditionsMaintenanceIntervals : Minimum every half year.We recommend to keep EN 50073 and national regulations (orGerman <strong>BG</strong> Chemie-Information <strong>BG</strong>I 518)Test Gas (Zero Point) : Ambient air (free from measured gas) or synthetic airTest Gas (Sensitivity) : 0.4 to 0.8 Vol.-% propane in airTest Gas Application: 0.5 to 1 l/min by means of <strong>Ex</strong><strong>Tox</strong>-Calibration Adapter for minimum60 sSensor Element,<strong>Article</strong> <strong>No</strong>. 620000ReplacementFurther Information : EN 50073, <strong>BG</strong> Chemie-Information <strong>BG</strong>I 518 (German version only)This Data Sheet is at the same time a type specific supplementto the Instruction Manual <strong>Ex</strong><strong>Tox</strong> <strong>Transmitter</strong> <strong><strong>Ex</strong>Sens</strong>-D/Sens-D.(Subject to technical change)<strong>Ex</strong><strong>Tox</strong> GmbH ● Hildebrandstraße 5 ● D-44319 Dortmund ● Tel. +49 231 589 409-0 ● Fax +49 231 589 409-10Internet: www.extox.de ● mail to: info@extox.de<strong>252001</strong>_<strong><strong>Ex</strong>Sens</strong>-D_<strong>BG</strong>-<strong>WT</strong>_e_V8.doc,06/02/2005,Seite 2 von 2
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