Particulate Emission Monitoring Solutions
for the Wood Industry
Debarking, Cutting and ChippingCoal Mills
The high levels of moisture and sticky particulate associated with cutting processes normally result in the use of Cyclones to reduce the amount of fugitive dust emissions to atmosphere. To assess the performance of the filter PCME supply a patented fully insulated Electrodynamic sensor. This unique industry proven sensor is successfully used in thousands of moist and damp installations worldwide to overcome the problems associated with standard Triboelectric units caused by moist particulate de-sensitising and ultimately short-circuiting the sensor. [top]
Dryers and Return to Air Systems
To comply with European return to air regulation EN12779 PCME’s Electrodynamic technology is approved by Holz-BG to monitor the extremely low levels of dust (<0.3 mg/m3) allowed to be returned into the work place by these internationally recognised standards. Changes in emission levels can be monitored either locally or remotely to allow the repair of the filter before exposing the workforce to high levels of dust, any breaches of the 0.3 mg/m3 limit activate alarm relays to facilitate the diversion of dust to atmosphere. [top]
Silo Monitoring
Silo filters are by their very nature sited in remote locations where it is extremely difficult to identify increases in particulate emissions before a major release of dust has occurred. PCME provide a range of both trending and calibrateable instrumentation to continually guard against nuisance dust emissions. These systems offer both local alarms to allow automated plant shut down together with remote observation of filter performance via either 4/20mA or Modbus connections. [top]
Trimming Processes
The rugged construction, ease of use and reliability of these industry proven monitors (approved to MCERTS and TUV), have made them a popular choice for the exacting monitoring requirements as laid out by International Regulations. [top]
Wood Chip Boilers
Bag Filters are commonly used in conjunction with Woodchip Boilers to limit the amount of fugitive dust emissions, to monitor the low emission levels from these filters (typically single figure mg/m3) Electrodynamic systems are preferred. Unlike traditional Opacity and Triboelectric systems whose readings are affected by particulate build-up on the sensing elements, they are unaffected by contamination and do not require frequent cleaning of the of the sensor rod. As additional services such as purge air are not needed the cost of ownership of Electrodynamic systems is by comparison to other techniques extremely low. [top]
Sifting and Grading
The capability of Advanced Electrodynamic monitoring systems to warn of increasing emission trends and in conjunction with a Predict software package, to accurately indicate which filter row within a bag house is under performing can rapidly effect pay back of the instrument. Ongoing cost savings can be made by both increasing the usable life of the filter media and by reducing lost production time caused by unplanned filter outages. [top]
More on key monitoring considerations and guidance towards technology suitability in the Wood Particleboard Industry:
 Wood Emission Monitoring in the Wood Particleboard Industries
More on maximising process performance, reducing waste and improving efficiency:
Advanced Bagfilter Diagnostics
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