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BAM 1020 OPTIONAL ACCESSORIES
Our 20 years’ experience with the BAM 1020 has been, for the vast majority of regulatory applications, that time resolution of less than one hour is unnecessary and undesirable. This is because of data handling issues, reliability, accuracy and sensitivity sacrifices that must be made in the real-time process in order to obtain unnecessary, continuous output.
The real-time trending module, BX-895, is an accessory for the BAM-1020 that provides autonomous, real-time output based on sensitive light-scatter based techniques. It is used by customers requesting trending information and who desire the unsurpassed accuracy of step-wise semi-continuous beta gauges such as the BAM-1020. They are unwilling to accept the sacrifice to sensitivity and to accuracy that continuous in-line beta gauges some manufacturers convince their users to accept.
Because the method applied by the USEPA does not include the light-scatter real-time monitor, it is reasonable to assume one can use the portable beta gauge with real real-time monitoring such as the Met One Instruments’ E-BAM.
Manufacturers who tout their ‘real-time’ monitoring avoid telling customers that the data that you get out of the beta monitor units is NEPHELOMETER data, not BETA ATTENUATION data. They simply use the hourly beta measurement to automatically create a correction factor for the nephelometer data! They had a lot more difficulty passing the EPA testing than we did with the BAM-1020 and most did not pass.
The BAM-1020’s stepwise method (tape moves back and forth between the nozzle and the beta source) is more sensitive than inline (beta source and detector inside the flow path). A C-14 source varies in radio activity. The BAM 1020 emits 60 micro curries and other C-14 sources are up to 100 micro curries.
The BAM-1020 with the BX-895 option provides you with real-time nephelometer data where you can manually apply a correction factor in the BAM data logger if needed, but, the BAM does not make any adjustments to the beta system based on the nephelometer, nor does it automatically adjust the nephelometer based on the beta system. So you can get the most accurate hourly beta method data which the USEPA designation requires, and complete flexibility with the real-time monitor which is an option.
The BAM 1020 can also be provided with an optional touch screen display and flash drive and report processor - option (BX-970) for customers who request these options. Neither of these options effects the day to day operation of the BAM 1020’s un-paralleled accuracy.
The BAM 1020 is the monitor dominant in the USEPA FEM 2.5 network with more than 95% coverage.
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