CPA 341 Cleanroom Particle Analyzer
Optical Particle Counter CPA 341 for analysis of particle size distributions and particle concentrations in aerosols, best for cleanroom applications
The CPA 341 cleanroom particle analyzer is the successor product to the PZG series from RR Elektronik GmbH. The device is a mobile or stationary single particle scattered light counter for measuring low-concentration aerosols in gaseous samples. The airborne particles are analysed in terms of particle number and size.
The CPA 341 is specially designed for monitoring ventilation systems with high purity requirements and covers the particle size range from 0.3 to 10 µm at a sampling flow rate of 28.3 L/min.
Standards
ISO 14644-3
EU GMP Annex 1
VDI 2083
DIN 1946-4
ISO 21501-4
Benefits
- portable particle counter for stationary and mobile use
- powerful and stable air flow rate generation
- easily readable, clear structured and intuitive user interface
- highly sensitive touch display, can be operated with multi-layer gloves
Applications
- cleanroom qualification and validation according to ISO 14644-1/-3, GMP Annex 1 and VDI 2083
- acceptance measurements of clean rooms and workbenches
- fractional efficiency tests of filters and separators
For testing gaseous samples with particles, the measuring device sucks in a sampling volume flow of 28,3 L/min via an internal side channel blower. The entire sample is fed into the measuring cell and exposed to light from a laser diode. A photodetector detects the light scattered by the particles. The signals are processed and classified into different classes according to the pulse height. A calibration function is used to correlate the pulse height classes to the respective particle size. Based on the number of signals, the number of particles in the examined sample is determined.
| Parameter title | Unit | Value |
|---|---|---|
| test flow rate | L/min | 28,3 |
| measurand(s) | - | particle number, particle size distribution |
| measuring range, particle size | µm | 0,3 ... 10 |
| resolution, measurement time | s | ≥ 1 (variable adjustable) |
| resolution, particle size | - | 5 size channels (preset) |
| power supply | - | 100 ... 240 VAC (50/60 Hz) |
| optical system | 90° light scattering optics | |
| light source | - | blue Laser diode (450 nm) |
| alarm level | - | programmable for each cleanroom class |
| hose connector | mm | 8 |
| communication interface | - | Ethernet |
| dimensions (w × h × d) | mm | 255 × 255 × 220 |
| weight | kg | 4 |
- software CRQWin for clean room qualification (ISO 14644; GMP Annex 1 and VDI 2083)
- carry case
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