/ 181 The iCAL HBU heated uler 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 staility Plug Play integration • Simple use and operation Ecellent long-term stability • Remote diagnosis down to valve and sensor level Factory-calirated 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 sustantially reduces the time reuired y the operator. The AVL iCAL caliration 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 etraordinary long-term staility. The NOx converter tester iCAL NU 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 dioide NO2. The ozone O3 is generated by means of corona discharge in an atmosphere consisting of pure oygen 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 chamer. For improved accuracy, the iCAL CFO is temperaturesta ilized at 50 C. Most regulations reuire 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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