Interfaces | USB, LAN, RS-232/485 |
---|---|
Measurement range (size) | 4 – 5,000 nm |
Measurement range (number CN) | 1 • 105 particles/cm3 (single count mode), 1 • 105 - 107 particles/cm3 (nephelometric mode) |
Volume flow | 0.9 l/min |
Data acquisition | Digital, 20 MHz processor, 256 raw data channels |
Light source | LED: High stability, long-lasting |
User interface | Touch screen, 800 • 480 pixels, 7" (17.78 cm) |
Power supply | 115 – 230 V, 50 – 60 Hz |
Dimensions | 33 • 38 • 24 cm (H • W • D) |
Weight | approx. 10 kg |
Accuracy | 5% (single count mode); 10% (nephelometric mode) |
Response time | t90 = 3 s |
Operation liquid | Butanol |
Installation conditions | +10 – +30 °C (others on demand) |
- 說明
- 規格
The Palas® condensation particle counter ENVI-CPC 100 is a CPC for environmental ambient air monitoring. Model 100 is created for lower concentrations.
The ENVI-CPC 100 can be equipped with an isothermal Nafion® aerosol dryer that has no consumables and can be used for months without maintenance. The humidity of the aerosol at the inlet is measured and controlled. Additionally, the ENVI-CPC 100 has a second pump for the working fluid in order to suck it out of a large butanol reservoir. Due to those features it can operate for months without refilling the fluid reservoir.
The cut-off diameter is, as requested for ambient air monitoring CPCs, at 7 nm (see fig. 1). Another advantage is the high aerosol flow rate of 0.9 l/min which reduces diffusion losses to a minimum. The ENVI-CPC 100 can be equipped with a powerful meteorological sensor that monitors ambient air temperature, pressure, humidity, wind speed, wind direction and precipitation type and intensity. A protective outdoor housing is available.
Fig. 1: Counting efficiency curve of the ENVI-CPC measured at the Leibniz Institute for Tropospheric Research
The control of the volume flow is enabled by an internal flow sensor with accessed long-life membrane pump. Contrary to a control with critical nozzle a contamination of the system does not lead to an drop of the volume flow. This is important especially for long-time measurements in ambient air. Additionally, the volume flow can be calibrated afterwards by the user.
As user interface the ENVI-CPC 100 has a 7“ touch display. For remote and network applications the ENVI-CPC 100 supports a standardised interface with different protocol choices, e.g. Modbus, Bayern-Hessen protocol and features like remote access and data storage in the internet or in an internal network.