Ion Mobility Spectrometer (IMS) Standalone IMS with integrated micro-computer and color display

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Mercy Wiggins
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Ion Mobility Spectrometer (IMS) Standalone IMS with integrated micro-computer and color display Mobile analysis of gaseous samples Application fields: Environmental protection, especially emission

Air control for workplace safety Process and production control (e.g.

1 Ion Mobility Spectrometer (IMS) Standalone IMS with integrated micro-computer and color display Mobile analysis of gaseous samples Application fields: Environmental protection, especially emission control and monitoring Air control for workplace safety Process and production control (e.g. chemistry and semiconductor industries) Detection of narcotics and drugs Detection of toxic substances and explosives Detection of chemical warfare agents Analysis in food industry Medical diagnostics Features: high sensitivity, minimised cross sensitivity fast response continuous monitoring portable as well as stationary devices available compact and rugged design low power consumption minimal effort for service and maintenance analysis software interface for external Laptop or PC Applications in: ABC & CIVIL DEFENCE FIRE BRIGADES CUSTOMS SECURITY Address: STEP Sensortechnik und Phone: / 9791 and 9792 Elektronik Pockau GmbH Fax: / Siedlungsstrasse info@step-sensor.de D Pockau URL:

2 Technical Specifications: Ion Mobility Spectrometer Ionisation source Detection limit Generation of measurement signal Resolution of the spectrum Sampling procedure Inlet part Measuring temperature Data input of the spectrum Internal control Integrated micro-computer Data storage medium Color Display Communication, Connection of peripheral devices Power supply: 12 VDC or 230 VAC Tritium (Beta-emitter), Activity 50 MBq depending on requested accuracy ppb and ppm range in a interval of 1 second 1 average spectra range of 16 individual spectra R 50 (drift time/peak width with half amplitude) self-priming direct inlet, protectable with dust filter 0.45 µm inlet system and detector heated freely programmable - standard version up 110 C - special version up to 160 C 16-bit A/D-converter from Linear Technology all IMS components are controlled by a 32-bit ARM7 processor TMS470R1B1N for graphical control and spectrum analysis while stand-alone operation: Pico-ITX, Intel Atom 1,6 GHz, 1GB RAM, 4xUSB; Keyboard and mouse for stand-alone operation are included hard disk WD1600BUDT, 160GB, suitable for 24x7 always on operation G070VW01, 7, resolution 800x480, LVDS Connecting an extern PC/Laptop via USB interface is possible for IMS control and data analysis. Voltage supply: 12 VDC or 230 VAC Power consumption approx. 35 W without or 70 W with heating Battery powered 5 10 hours with ICR 3360 Operation temperature Dimensions Weight (with battery) from - 10 C up to + 80 C (depending on IMS version) Dimensions: 19 -plug-in unit, 3 HE approx. 7 kg Address: STEP Sensortechnik und Phone: / 9791 and 9792 Elektronik Pockau GmbH Fax: /77730 Siedlungsstrasse info@step-sensor.de D Pockau URL:

3 Selected fields of application agriculture H 2S, NH 3, pesticides chemical, petrochemical, refining aromatics, phosgene, CS 2, alkanes, CL 2 dangerous goods stores food industry oil and gas exploration and production laboratory medicine power generation and distribution public security, military, police, customs and terrorism countermeasures phosgen, HCL, HC's, PCB, PCP, breakthrough of filters quality control, aroma H 2S, mercaptans identification and monitoring systems analysis of breath air, body liquids, secrets, sweat H 2S, SO 2, HF, PAC, PCB air monitoring / detection of dangerous substances, e.g. explosives, narcotics,cwa semiconductor production NH 3, amines, B 2H 6 semiconductor production tunnel, garages water treasurement and sewage waste disposal, incineration, recycling fire warning systems, e.g. pyrolytic products NO x, SO 2, mercaptans PAC, PCP, aromatics, VC, DCE dioxin precursors, PCB, PCP, H 2S, NH 3, amines, HC's, VOC Address: STEP Sensortechnik und Phone: / 9791 and 9792 Elektronik Pockau GmbH Fax: / Siedlungsstrasse info@step-sensor.de D Pockau URL:

4 With the STEP IMS you received a device usable for the detection of a variety of toxic gases and vapours. It meets the increasing lawful demands regarding emission- and imission control of gaseous chemical substances. STEP IMS-Bio can be stationary and portable used for continuous process controlling in industry as well as analyzer for actual environmental pollution and the detection of hazardous materials. The principle of measurement is based on different drift velocities of ions within an electric field in air at normal pressure. Ambient air is directed to an ionization source and is ionized by weak radiation. Complex ions of type NH +, NO +, (H 2 O) n H + emerge that cause the positive reaction peak (RIP + ) in the spectrum. Negative ions of types O - 2 und (H 2 O) - m constitute the negative reaction peak (RIP - ). Both types of ions are always available in air. If there are pollutant molecules like phosphor-organic compounds or alkyl halides in the air, a charge transfer between the reaction ions and the pollutant molecules (which we denote M) takes place. Simplified, this can be written: RIP + + M RIP + M + RIP - + M RIP + M - (positive mode) (negative mode). Due to electric pulses at the entrance grid, the ions are directed from the radiation source to the drift tube. Depending on their physical features, ions move with different drift velocity within the homogeneous electric field. Accordingly, ions arrive at different times their respective drift time at the collector electrode and cause an electricity signal. Because the drift time is individual, it can be used to identify molecule ions M±, whereby the size of the signal at the collector electrode is proportional to the concentration of these molecules in the air. This principle you can see in figure 1.

5 figure 1: technical principle of Ion Mobility Spectrometry The collector signal is enhanced and digitalized. Data are processed by a 32-bit microprocessor and transfer to the integrated microcomputer, which realized the signal processing and show the spectrum and the measurement results on the display. The schematic design of a STEP-IMS is shown in figure 2. figure 2: schematic design of Ion Mobility Spectrometer

6 Software The STEP-IMS has a customized software versions for controlling the device, analyze of IMS spectrum and calibration: controlling all IMS functions(high voltage, valves, pumps, temperature of detector) with USB-port shows all IMS spectrums (measured or saved), straight or unstraight, with or without the marker of maxima analyse spectrum and substance identification with substance database, teach software for new substances by update or expansion the database STEP can provide different and customized versions of software. These differences are conditional on the scale of the used spectrum analyze and substance identification. One type of software version has defined parameters of substance identification and preset substance databases. This version is for the measurement of defined types of substances. The calibration curves for analyses of concentration are implemented. These devices can used in central building control systems, for example as steady device for air control, emission control or security systems. For larger spectrum analyses with the STEP-IMS you can get a software version with more options to change several parameters. This device can used in laboratory or for medical diagnostics. For the measurement you can choose between 3 processes: (1) Manual measurement: The users can choose the polarity of high voltage (positive or negative) and start or stop the measurement manually. Thereby he can do calibration measurement, tests or measurements with different length. (2) Automatic measurement 1: In this process the device can measure and analyse known substances with free selectable measuring time or period. (3) Automatic measurement 2: The polarity of high voltage is switched automatically in a free selectable time or period. So you can do a periodically measurement for substances with positive or negative ionisation.

7 Table of compounds Remarks: About 200 chemical compounds are able to measure No Sign Formula in display Compound name MDC/ppm Alarm Substance class, Measuring Mode extensions 1 VX VX p1, pn1 2 GD Soman p1, pn1 3 GA Tabun p1, pn1 4 GB Sarin p1, pn1 5 HN3 Nitrogen Lost p1, pn1 6 C2H4O Ethylenoxid p1, pn1 7 NH3_DMH Ammonia p1, pn1 Dimethylhydracine 8 CH2O Formaldehyd p1, pn1 9 L Lewisite n1 10 HD Sulfur Lost n1 11 COCl2 Phosgene n1 12 CMME Chlordimethylether n1 13 SO2 Sulfurdioxide n1 14 BCl3 Bor-Trichloride n1 15 Cl2 Chlorine n1 16 TDI Toluoldiisocyanat n1 17 HF Hydrogen fluoride n2 18 HBr Hydrogen bromide n2 19 HCN Hydrogen cyanide n2 20 Phenol Phenol n2 21 B2H6 Diborane n2 22 CS2 Carbon sulphide n2 23 H2S Hydrogen sulphide n2 24 HCl Hydrogen chloride n2 25 Acetone Acetone p2 26 Amine Amine p2 27 Toluene Toluene p2 28 Xylene Xylene p2 29 ACN Acrylnitril p2 30 PI Propylimin p2 31 DMS Dimethylsulfat p2 32 EA Ethylacetat p2

8 II. Table of compounds Identification of narcotics and drugs Cannabis Extasy Amphitamines LSD Cocain Heroin III. Table of compounds Identification of explosives RDX TNT Semtex EGDN PETN TATP AN DNT IV. Table of compounds Fire brigades selected compounds Acetone Acrolein Acrylnitrile Ammonia Phosgene Chlorine Chorobenzene Cyanogen Cloride Hydrogen Chloride Hydrocyanic Acid Ethanol Hydrogen Fluoride Formaldehyde N-Hexan Hydrazine Methanol Sulfur Dioxide Hydrogen Sulfide Nitrogen Dioxide Styrene Perchlorethylen TDI 1.1.1/1.1.2 Trichlorethane Vinylchloride

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