Filter Leak Monitors are used for monitoring changes in emissions from particulate arrestment plant (eg Electrofilters or bag filters) and provide a tool to minimise emissions from processes and monitor for arrestment plant malfunction (eg damaged filtration media).
 Determining when a filtration media is starting to deteriorate is vital in providing pre-emptive warning to minimise potential increased emission events and associated process shutdown from emergency reactive maintenance work.
Tracking the short-term emission peaks via the sensors recorded data facilitates comparison of the magnitude of dust pulses resulting from cleaning cycles which in turn permits prediction and location of failing filter media.
Instruments include approved Filter Leak Monitors where quality assurance features are required (eg to MCERTS Version 3 Class 3 requirements or TA Luft). The performance standard is similar to the ASTM standard D7392-07 for bag leak detectors which has relevance for MACT monitoring in the USA. Instruments not verified under an approval scheme still retain a variety of quality assurance and functionality options.
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