Transmitter Sens H2S-100-EC Article-No.: 211212 Features ...
Transmitter Sens H2S-100-EC Article-No.: 211212 Features ...
Transmitter Sens H2S-100-EC Article-No.: 211212 Features ...
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<strong>Transmitter</strong> <strong>Sens</strong> <strong>H2S</strong>-<strong>100</strong>-<strong>EC</strong><strong>Article</strong>-<strong>No</strong>.: <strong>211212</strong>InstallationPlace: When monitoring working place concentrations installation at eyelevel,otherwise near to the floor or close to sources of release.Position : sensor opening to be placed downwardsFixing : drilling jig as Download on our ExTox HomepageTerminal Assignment :4-20 mAGNDU+U+ Power supply 24 VGND Ground (Power supply and current output)4-20 mA Current output 4-20 mALine Length : max 2,000 m when using ExTox-Cable 3 x 0.8 mm(corresponds to a wire resistance of 18 Ω)Time of Stabilisation : approx. 1 min (90%), approx. 20 min (99%)UseDescription of the MeasuringPrinciple: The sensor consists of two or more electrodes which are arranged inan electrolyte. One of these electrodes is accessible for themeasured gas. A redox reaction at the electrode takes place. Thiscauses an electrical current which is proportional to theconcentration in the measured gas.Cross <strong>Sens</strong>itivity : 5 ppm NO 2 -> Indication approx. -1 ppm H 2 S (negative!)10 ppm HCN -> Indication approx. -1 ppm H 2 S (negative!)5 ppm SO 2 -> Indication approx. 1 ppm H 2 S10,000 ppm H 2 -> Indication approx. 15 ppm H 2 SSpecial Influences : ▪ Longer operation in very dry atmosphere should be avoided.▪ Alarm levels from 10 ppm▪ Lower limit of measuring range 5 ppm (acc. to EN 45544)<strong>Sens</strong>or Lifetime : typical: 2 years, depending on operation conditionsMaintenanceIntervals : Minimum every half year.We recommend to keep EN 45544-4 and national regulations (orGerman BG Chemie-Information BGI 836)Test Gas (Zero Point) : Ambient air (free from measured gas) or synthetic airTest Gas (<strong>Sens</strong>itivity) : Hydrogen Sulphide,Concentration in the middle of measuring range or slightly abovehighest alarm levelTest Gas Application: 0.5 to 1 l/min by means of ExTox-Calibration Adapter for minimum120 s<strong>Sens</strong>or Element,<strong>Article</strong> <strong>No</strong>. 620017ReplacementFurther Information : EN 45544-4, BG Chemie-Information BGI 836 (German version only)This Data Sheet is at the same time a type specific supplementto the Instruction Manual ExTox <strong>Transmitter</strong> Ex<strong>Sens</strong>/<strong>Sens</strong>.(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.de<strong>Sens</strong>_<strong>H2S</strong>-<strong>100</strong>-<strong>EC</strong>_<strong>211212</strong>_e_V5.doc,27/05/2004,Seite 2 von 2
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