The DT370 series instruments utilise PCME's unique Electrodynamic measurement principle. When the sensing probe is installed in the duct or stack, particles in the air stream interact with the sensing rod 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 (application dependent).
Unlike triboelectric systems, Electrodynamic systems electronically filter out the dc signal caused by particle collision, which makes the quality of the measurement unaffected by build-up on the probe which would otherwise cause zero or calibration drift.
Very low concentrations of particulate found after even the most efficient bag filter can be measured due to this unique Electrodynamic technique.
Various independent laboratories have validated this relationship.
Electrodynamic technology also enables the use of patented fully insulated probes, essential for reliable measurement in high humidity applications (after process and spray driers) and applications with high conductive dust loadings.
The DT370 series instruments are particularly suited for monitoring particulate emissions from industrial applications controlled with bagfilter-type arrestment plant having rugged performance and sufficient resolution for these applications.
The instrument's output is directly proportional to particulate and may be used to monitor emission tendencies or calibrated in mg/m3 by comparison to the results of an Iso-kinetic (gravimetric) sample.
The instrument has in-built data recording and graphics display capability enabling emission trends to be easily viewed and plant data can be averaged and recorded in the instrument for alarm purposes and external emissions reporting (via optional DustReporter 2).
- Similar performance to DT270 particulates emissions with added user interface capability
- Enhanced measurement through unique Electrodynamic technology
- High quality assurance with automatic contamination, zero and span checks
- Up to 4 channels of dust monitoring
- In-built data recording facilities and bag failure diagnostics