The Gaskleen Pico1000 analyzer measures trace moisture in nitrogen process gas streams, with a limit of detection of 1 part per billion (ppbv). The system is ideally suited for qualifying and certifying ultra-high purity process gas lines, as well as detecting purifier end-of-life when deployed downstream. Its robust, compact design is readily portable, allowing users to easily move it around a facility for quick checks of process gas quality at many points. The Gaskleen Pico1000 analyzer consumes up to 70% less process gas, compared to competitive analyzers.
The analyzer uses a microelectromechanical system (MEMS) to gravimetrically measure the moisture concentration. Sample process gas flows through a mass flow controller to the preconcentrator MEMS where the moisture is trapped with a proprietary coating throughout the sample period. When the sampling is complete the preconcentrator heats in milliseconds “flashing” off the collected moisture.
Co-packaged with the preconcentrator is a resonator MEMS vibrating in the MHz frequency range. This resonator is functionalized with another proprietary chemoselective coating to enhance absorption and desorption of the moisture flashed from the preconcentrator. This proprietary design allows the resonator to quickly capture and measure the mass of moisture absorbed on the resonator.
The measurement cycle begins with the resonator vibrating at a specific MHz frequency. When the preconcentrator flashes off the moisture a resonator frequency shift (ΔHz) occurs, which is detected and transformed into an electrical signal that is directly proportional to the mass of the moisture.
Sampling is performed continuously, except during preconcentrator flash and resonator measurement, which only takes a few seconds. The Gaskleen Pico1000 analyzer is a near-real-time analyzer with continuous collection and batch measurement.
Sampling times are automatically selected, depending on the moisture concentration in the process gas
Detection limits as low as 1 ppbv can be achieved in nitrogen (when sampling for 10 minutes)
Incorporates internal diagnostic parameter monitoring and user guided system checks
Easy “Plug and Play” installation
Light weight design for mobile monitoring applications
Representative Performance (non-quality control parameter)
Speed of Response
1.6 to 2.3 ppmv / 2.3 to 1.6 ppmv, nominal: T-10 = 8 min, T-90 = 9 min 8 to 12 ppbv / 12 to 8 ppbv, nominal: T-10 = 24 min, T-90 = 79 min
Gravimetric MEMS Resonator
Size and Weight (nominal)
44.6 cm W x 28.8 cm D x 17.6 cm H (17.6 inch W x 11.3 inch D x 6.9 inch H) 11.4 kg (25 lbs)
Gas Inlet Connection
1/4 inch gasket seal (VCR1 or compatible)
Gas Outlet Connection
1/4 inch male compression fitting (Swagelok2 or compatible)
< 0.25 μm / 10 μinch Ra internal surface finish (except for MFC with < 0.41 μm / 16 μinch Ra internal surface finish)
Helium Leak Test
< 2 X 10-8 mbar•liter per second
Shipping / Storage Temperature
-30°C (-22°F) to 80°C (176°F)
483 mm rack-mountable component or desktop
Installation Category II, Pollution Degree 2
CSA, UL, CE, WEEE, ISTA 1A
U. S. Patents #
US 6,511,915; US 6,627,965; US 6,953,977
Nitrogen (other inerts coming soon and corrosives are in development)
5°C (41°F) to 30°C (86°F)
Sample Flow Rate
280 sccm ± 1%
0°C (32°F) to 30°C (86°F); Max. 80% RH non-condensing environment
69 kPa (10 psig) to 310 kPa (45 psig)
101 ± 7 kPa absolute pressure (14.7 ± 1 psia); If > 500 m (1640 ft.) in elevation consult with Pall
100-240 VAC 50/60 Hz, supply voltage fluctuations not to exceed ± 10% of nominal supply voltage (indoor use only)
60 W average with a nominal 90 W peak start-up draw
Inputs / Outputs (analog/digital)
4 - 20 mA (isolated), requires external voltage source, 12 ... 36 VDC 0 - 5 VDC (isolated), load requirements: RL > 2 kΩ, 0 pF < CL < 200 pF 2 USB 1.1 7” LCD Touch screen Output by USB downloadable csv data file, or analog signal RS232 serial port (factory service diagnostic communication only)
4 user programmable Form C relays
1 VCR is a trademark of the Swagelok Co. 2 Swagelok is a trademark of Swagelok Co.