PMS Chem 20 化学颗粒计数器（4通道：20,50,70,100 nm）

Applications
- Real-time particle monitoring within chemical distribution systems
- Point-of-process monitoring
- Chemical packaging operations monitoring
- Chemical filter performance and effciency characterization
- Performance testing of chemical handling components

- Size range: ≥ 20 nm PSL and 9 nm Au minimum detection limit
- Channels: 4
- Channel sizes: 20, 50, 70, 100 nm
- Flow rate (ml/min): 35 ml/min
- Zero count: < 100 counts per liter
- Maximum concentration: 
+ High Resolution Mode: 2500 P/ml ≥ 20 nm; 1000 P/ml ≥ 100 nm
+ High Concentration Mode: 500,000 P/ml > 20 nm; 10,000 P/ml > 100 nm
- Sample temperature: 59 – 104 °F (15 – 40 °C)
- Maximum pressure: 75 psi, max
- Wetted surface materials: PFA, PTFE, Sapphire, Kel-F®, Kalrez® 4079
- Exterior surface: 316L stainless steel enclosure
- External Dimensions (l, w, h): 50.8 x 42.7 x 28.3 cm
- Weight: 29.2 kg
- Power: 100 – 240 VAC
- Laser classification: 
Class I complies with US21 CFR 1040.10 and EN60825-1.
Internally an enclosed Class IV laser is used per EN60825-1.
- Communications: Ethernet (PMS protocol), 4-20 mA (5 outputs: 4 size channels, 1 sensor status), RS-232 (set up and
diagnostics only)
- Status indicator: LCD display and one (1) tri-color LED. Indicates operation and communication status, and laser, sample
flow or internal-leak status
- Calibration:
+ Sensors calibrated using PSL particles in pure water. 
+ Materials used are traceable to National Institute of Standards & Technology (NIST) and/or Japanese Industrial Standards (JIS).
Environment 
- Temperature: 64 – 82 °F (18 – 28 °C) ± 1 °C/hr
- Humidity: 5 - 90%, Non-Condensing