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ENVI-CPC 200

Nanoparticle counter for ambient air monitoring with Nafion® aerosol dryer (optional) and high volume flow for up to 2 • 106 particles/cm3 (single count mode)

•    The unique, patented way of providing the working fluid for unattended operation of months
•    Depending on the sensor used (exchangeable by the user), the ENVI-CPC counts up to 2,000,000 particles/cm3 in count mode
•    Ambient air monitoring without dilution system
•    Integrated computer with 7'' touch screen
•    Intuitive user interface with sophisticated software for data evaluation
•    Integrated data logger
•    Limitless integrated network connectivity that supports remote operation and data storage in the internet
•    Powerful software package

Description

The Palas® condensation particle counter ENVI-CPC 200 is a CPC for environmental ambient air monitoring. Model 200 is appropriate for high concentrations and offers single particle counting up to 2,000,000 particles/cm3. It can be used for ambient air monitoring without a dilution system.

The ENVI-CPC 200 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, it 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. Another advantage is the high aerosol flow rate of 1 l/min which reduces diffusion losses to a minimum. The ENVI-CPC 200 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 200 has a 7“ touch display. For remote and network applications the ENVI-CPC 200 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.

Datasheet

Interfaces

USB, LAN, RS-232/485

Measurement range (size)

4 – 5,000 nm

Measurement range (number CN)

2 • 106 particles/cm3 (single count), 2 • 106 – 107 particles/cm3 (photometric)

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)

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)

Benefits

•    The unique, patented way of providing the working fluid for unattended operation of months
•    Depending on the sensor used (exchangeable by the user), the ENVI-CPC counts up to 2,000,000 particles/cm3 in count mode
•    Ambient air monitoring without dilution system
•    Integrated computer with 7'' touch screen
•    Intuitive user interface with sophisticated software for data evaluation
•    Integrated data logger
•    Limitless integrated network connectivity that supports remote operation and data storage in the internet
•    Powerful software package

Applications

•    Aerosol research
•    Environmental measurements
•    Evironmental monitoring networks
•    Workplace safety and exposure studies
•    Traffic emission monitoring
•    Health Studies
•    Mobile aerosol studies