Lab Gas Nitrogen Generators Brochure

Nitrogen Generators(Including Zero N2 and dry air)Produce nitrogen gas from compressed air simply and cost effectively. Replace nitrogen gas cylinders for thefollowing applications:• LCMS (single and multiple units)• ICP • ELSD• GC-carrier gas• GC-FID, NPD, ECD, AED• Solvent evaporationTechnical FeaturesPrinciple: passage of compressed air through a bed of carbon molecular sieve (CMS) using presure swingadsorption technology, the most reliable on themarketN2 flow: 550 cc/min to 30L/min (for largercapacities please consult domnick hunter)O2 purity: 3% to 10 ppmOn-line purity monitoring capabilityDigital hours counter Audible and visual maintenance indicatorEconomy mode option: Enables thecompressor to switch off when nitrogen supplyis not requiredOil-free air compressor available: The quietestmodels availableAvailable with or without built-in air compressorQuick and easy servicing: less than 10 minutes every 6 monthsA 25L/min version is also availableBenefitsDesigned to meet specific analytical instrumentgas purity and flow requirementsImproved analytical performance - Production of a constant flow of gas improves the consistency of the analysis results and hence reproducibilityIncreased laboratory efficiency with a constant, guaranteed supplyImproved safety - No handling high-pressure gascylinders or liquid dewars. Nitrogen production at controlled low pressuresSimple installation - Only one set up operationrequired for reliable service over time. Installationon or below a laboratory bench top, saving spacein the laboratoryEconomy - Quick return on investment - No gascylinder rental bottles, no price inflationRecommended by major instrumentmanufacturers Combined N2 and Dry Air Generators - In additionto the stand alone nitrogen, zero N2 and dry airgas generators, domnick hunter alsomanufactures models that provide nitrogen anddry air from a single unit (models G6 and G7).www.nitrogen-generators.comDimensionsHow the generator worksPurge lineNon-return valveCMS columnsCooling coilAir intakeCompressedair filterSolenoidexhaustvalvesOxygen OxygenSolenoidintake valvesNitrogen tankNitrogenflow regulatorNitrogenThe technology used to produce a continuous flow of high purityN2 is pressure swing adsorption (PSA).This technology uses a combination of molecular sieves toselectively eliminate O2 and other contaminants in the ambient air.The CMS column(s) alternate between the purification andregeneration modes to ensure continuous N2 production.The gas generator is designed to take pre-filtered compressedair at 7 or 8.5 barg (102 or 123 psi g) (depending on model) from the existing laboratory supply or via the integrated oil-freecompressor.This flow of filtered compressed air then passes through the CMS column which is in the purification mode. At this point, the O2, CO2, humidity and hydrocarbons are eliminated from the compressed air, producing a flow of clean and dry high purity nitrogen.For zero N2 generators, a heated catalyst oxidises additionalhydrocarbons from the N2 gas flow providing zero grade N2 with a remaining hydrocarbon content of <0.1ppmModelGas FlowL/min(up to)OutletPressurebar gPurity852mm345mm 663mm842mm345mm 413mmModelsG1 / G5 / G6 / G8 / G9ModelsG2 - G4 / G7Nitrogen Generator Selection ChartNitrogen N2ZeroN2N2 &Dry Air0 550 cc/min 10 -1 750 cc/min 10 -0 1.5 10 -1 2 10 -0 2.5 100 -1 4 - 0.12 5 - 0.53 7 - 14 8 - 20 5 100 -1 6 - 0.12 10 - 0.53 12.5 - 14 14 - 25 12 - 0.56 18* - 0.57 20* - 18 25* 7 - 1ppm %0 1 5 10 -G1G2G3G455557G5G6G7Dry Air0 3 -55°C adp5G80 6 -55°C adp5G9N2 : 600 cc/min 10 -Air : 1.5 -55°C adpN2 : 3 10 -Air : 3 -55°C adp00 553 0 1 EG4Without compressor0With compressor1Without Economy Mode0With Economy Mode**1230 V / 50 HZE110 V / 60 HZWPlease Note:1 All 5 bar (72.5 psi g) delivery generators without compressor require 7 bar (102 psi) air inlet2 All 7 bar delivery generators without compressor require 8.5 bar (123 psi) air inlet3 *This unit is only available without compressor4 **Economy mode only available on models G1-G4Selected Product Codewww.nitrogen-generators.com