Product Description
Details
PCME QAL 181 advantages include:
- Reliable and rugged design, proven for long term operation at elevated temperatures and with minimised instrument maintenance
- System self-checks, with logging of Zero and Span check data for QAL3 reporting
- QAL Reporter PC software option to provide secure and powerful emissions reporting and automated QAL3 reporting in full compliance with EN 13284-2
- Entry and Standard control units with advanced graphics and user interface screens, features including alarming, graphical trending, data logging, 4-20mA output
- PLUS control unit option for sensor networking (up to 16 sensor channels) via industry standard Modbus, multiple inputs for external devices (e.g. for Temp and O2 normalisation)
The PCME QAL 181 supersedes the LMS181, an instrument currently proven in many applications worldwide.
Resolution and Sensitivity
The PCME QAL 181 uses a low-angle forward light scattering measurement principle unique to PCME (see ProScatter™ Forward Scatter). The measured cone of scattered light is larger than normal for light scatter instruments, which provides:
- Excellent sensing resolution and sensitivity, due to an increased signal-to-noise ratio
- Reduced cross-sensitivity to changing particle size, allowing a greater range of applications for which the instrument is suitable
Inherently Reliable Design
Using tough high-grade components and enclosures, and designed to overcome problems encountered with alternative light scatter technologies, the PCME QAL 181 offers outstanding reliability:
- No optical fibres, which are prone to degradation in elevated temperatures
- No moving active measurement parts, ensuring sensing components remain correctly aligned. Alternative technologies require movement of the position-critical detectors for the performance of self checks. The PCME QAL 181 avoids this by introducing a diffuser into the light path, which gives the additional benefit of a true check of the instruments ability to measure scattered light, rather than just attenuated light
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