/ 181 The iCAL HBU heated ��u����ler unit is used to humidify air or test gases for execution of automated quality checks on the exhaust gas measurement systems. The gases are led through two heated water tanks. The water content is measured via a high precision chilled mirror hygrometer. The iCAL HBU supports the sample dryer verifi cation as well as the CL�� ��uench verifi cation according to EPA 40 CFR part 1065. BENEFITS AT A GLANCE • High level of precision ���� 0.4 �� of the selected step�� �� Pressure-independent �� ow sta��ility �� Plug �� Play integration • Simple use and operation �� E��cellent long-term stability • Remote diagnosis down to valve and sensor level �� Factory-cali��rated and individually certifi ed, NIST traceable EMISSION CALIBRATION DEVICES AVL iCAL The accuracy of exhaust measurement systems is highly dependent on the quality and precision of the calibration devices used. The AVL iCAL calibration devices guarantee excellent accuracy and reliability and minimize operating costs through fully automated routines. This su��stantially reduces the time re��uired ��y the operator. The AVL iCAL cali��ration devices allow for manual or fully-automated verifi cations of analyzers ��linearity and NOx converter check�� and system leak checks ��CFO test��. MEASUREMENT PRINCIPLE UND APPLICATION The gas divider iCAL ����U is a highly accurate device for the calibration of gas analyzers. The underlying physical principle is based on the combination of calibrated, critical nozzles allowing for the accurate dilution of the test gases. The pressures of the calibration and dilution gases are controlled by means of a precise pressure controller with e��traordinary long-term sta��ility. The NOx converter tester iCAL N��U is used to check the effi ciency of the NOx converter of CLD analyzers. The technology is based on the gas phase titration between NO and O3 and provides known concentrations of nitrogen dio��ide ��NO2��. The ozone ��O3�� is generated by means of corona discharge in an atmosphere consisting of pure o��ygen ��O2��. The iCAL CFO ��critical �� ow orifi ce�� propane injection tester is used to inject a precise ��uantity ��e.g. of propane�� into the CVS dilution system or into a SHED chamber. The injected quantity is compared to the mass measurement of the CVS dilution system or the SHED cham��er. For improved accuracy, the iCAL CFO is temperaturesta ��ilized at 50 ��C. Most regulations re��uire the regular implementation of this CFO test. The iCAL calibration devices allow manual or fully automatic verifi cations of analyzers ��linearity�� ��OX converter check) and system leak checks (CFO test). These devices can be connected to the exhaust measurement system by plug & play and are visualized in the iGEM software.
Solutionskatalog_2017_E
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