When the sensing probe is installed in the duct or stack, particles in the air stream interact with the sensing probe and a charge induction effect is analysed from the probe. Distributions in the particle stream result in a frequency charge induction response which is proportional to the concentration of particles.
Previous probe technologies, such as Triboelectric, relied on particle collision to created a measured signal. Electrodynamic® systems however, filter out the dc signal caused by particle collision, which makes the quality of measurement unaffected by build up on the probes which would otherwise cause zero or calibration drift.
Very low concentrations of particulate found even after the most efficient bag filter can be measured due to this unique Electrodynamic® technique.(<0.1 mg/m3)
These sensors are able to function in stacks and ducts up to 4.5 metres and process temperatures up to 800ºC.
Electrodynamic® technology also enables the use of patented fully insulated probes, essential for reliable measurement in high humidity applications (after process and spray driers).
Product data sheets
ENVEA PCME STACK 990
An Electrodynamic probe technology dust monitor that can be operated with either a ProController or Interface Module. The STACK 990 has automatic self-checks, built in logging and is fully calibratable to mg/m3. The system comes with MCERTS & TUV European approval certificates.
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ENVEA PCME STACK 602
Dual technology Particulate Emissions (mg/m3) and % Opacity stack emissions monitoring system with TUV Certification.
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Multi-Channel Control Unit
The Multicontroller allows operation of up to 16 sensors in the one control unit.
Single Channel Control Unit
The Interface Module controls a single sensor.
Integrated Control Unit
In intergrated systems the Control Features are built into the Sensor.