Do Bag Leak Detectors Require Periodic Calibration?

Posted by Earl Parker on Nov 5, 2015 11:00:00 AM

is_calibration_required_for_triboelectric_bag_leak_detectors.pngWhile the benefits of triboelectric bag leak detectors are evident, some wonder if these sensitive electronic devices need to be calibrated regularly in order to function properly. If so, they worry that the need for frequent calibration will prove burdensome and add to their already overloaded maintenance tasks or else risk feeding them inaccurate information.

The Modern Triboelectric Detectors DO NOT Require Calibration

Auburn’s models do not require calibration to match a known standard before use. Once manufactured and tested they come ready for use in the field. and will accurately provide the pico amp signal generated by the particles interacting with the probe - plain and simple.

Older generations of triboelectric systems had a more limited dynamic range, and thus required some initial setup to adjust the sensitivity to fit the application.

However, due to Auburn’s combining both DC and AC spectrums into one unified signal, this means that each unit can handle the entire spectrum of applications, from dirtiest to cleanest. 

So What Can Be Adjusted on an Auburn Triboelectric Detector?

Users need to set any alarm triggers after the installed system has established a baseline signal. These alarm levels vary according to applications and maintenance policies at each location.

The end-user can also select which signal range to focus on that provides the best resolution for their application.

In some applications, end-users may be required to correlate their tribo signal to a known stack test or isokinetic tests. This helps them establish what the pico amp signal strength means for their application. By matching the test results to the tribo signal generated during the test period, operators can correlate emissions levels to the pico amp signal from their application. In general however, most users can use a relative signal as called out by the MACT definition of a BLDS.

Tests have shown that under constant conditions the relationship between the pico amp signal and the dust concentration is linear. Auburn’s model U3600 of its Tribo line of bag leak detectors and dust monitors allows for a correlation factor to be input so the unit will actually display in mg/m3.

Other Bag Leak Detection Methods Require Frequent Calibration and Provide Less!

Opacity meters require initial calibration to provide accurate results and frequent calibration thereafter. They must be adjusted according to output loads, particle size and temperatures among others variables. Even so, they provide far less actionable data than triboelectric systems, as they are not sensitive enough to detect leaks before they become reportable events.

Conclusion

Auburn’s current generation of triboelectric detectors do not require periodic calibration. In contrast to optical detection methods, triboelectric systems can be used out of the box for a wide range of applications with only minimal setup.

If you have an older system, or use an opacity-based detection system, or another vendor’s triboelectric system and it requires frequent and time-consuming calibration, why not ask Auburn about how you can replace it with a newer, hassle-free system?

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Topics: Baghouse Maintenance, Bag Leak Detection