DyMaxion - Enclosed Ion Source Gas Analyzer
From Mass Spectrometers
Increased sensitivity and decreased background noise are possible due to the ionizer design. An enclosed ion source operates with sample pressures as high as 10-3 torr with no need for futher pressure reduction of this differentially pumped inlet system. Higher sample pressures contain greater numbers of neutrals and more sample to ionize. With each order of magnitude increase in pressure, signal strength varies proportionally with sample density. This is accomplished by confining the sample within a (relatively) small ionization volume.
The sample is constrained within the ion volume that that has a two small slits on either side of the ion volume. Bombarding electrons enter through these slits, ionizing the sample. Ions formed near the small exit hole of the ion volume are immediately extracted into the mass filter, and have little opportunity to react with neutrals. Ionization efficiency is high, since virtually the entire sample passes through the small ionization zone. The main transport mechanism from the source to the downstream mass filter is a pressure gradient, resulting from the higher pressure in the ionizer versus the lower pressure in the downstream mass filter. Hence, the source is conductance limited by the pressure difference.
- Mass Range: 1-100, 1-200, 1-300 AMU
- Operating Pressure Range: 10-4 Torr to ultrahigh vacuum
- Minimum Detectable Partial Pressure: 5 x 10-12 Torr ( 5 x 10-14 Torr for electron multiplier units )
- Resolution: Adjustable to constant peak width (0.5 AMU at 10% height)
- Emission Current: 0.1 to 10 mA; 50 mA to degas
- Electron Energy: 30 to 150 volts to operate; 200 volts to degas
- Ion Energy: 1 to 10 volts
- Source Sensitivity (Faraday Cup): 2 x 10-4 Amps per Torr at detector (measured with nitrogen at mass 28) with peak width = 0.5 at 10% height and 1 x 10-3 Amps emission current
- Power Requirements: 24 VDC @ 3 Amps; 110/220 VAC, 50/60 Hz adaptor available
- Mass Stability: ± 0.1 AMU after 30 minute warm-up
- Peak Height: ± 2% after 30 minute warm-up
- Minimum PC Requirements: Windows 98 through Windows 8
- RS-232 Serial Communications
- Interface: Isolated; baud rate selection of 1200 to 38,400; 9-pin, female D-connectors
- RS-485 Addressable Communications Interface: Isolated, baud rate selection of 1200 to 38,400; programmable addresses; 2-pin, female D-connectors
- Optional Analog/Digital I/O Board: Includes two analog inputs, two analog outputs, six relay contact closures, and four digital inputs
- Weight: 4.6 lb (2.1 kg) without head
- 74. lb (3.4 kg) with head
- Width: 4.5 in. (11.4 cm)
- Length: 9.0 in. (22.9 cm)
- Height: 5.25 in. (13.3 cm)
- Extensive systems integration capability with Visual Basic Scripting and DDE and OLE Automation.
- Auto-Tune capabilities to ensure high-quality, repeatable data.
- Real-Time Calculations can be applied to quadrupole or other input data.
- Scripting Capabilities provide the power to automate equipment and process monitoring.
- Spectral Interpretation suggests the gas species that could be contributing to your spectra.
- Customized Displays can be created and saved without programming.
- Optional Analog and Digital I/O for monitoring and control of your process.
- Simulation Mode to facilitate user training and application development.
Dymaxion analyzer heads and electronics can be interchanged to provide maximum versatility.
Dycor System 2000 software is a 32-bit, multi-threaded program developed to take full advantage of the capabilities of Windows 98 through Windows 8, and is intended for real-time process control.
All Dycor analyzers, M/MA Series, System 1000, and QuadLinks can be upgraded to operate with Dycor System 2000 software for Windows XP, Vista and Windows 7. Existing customers can now protect their investment while maintaining compatibility with the Dymaxion line of RGAs. With a System 2000 upgrade, even the oldest Dycor analyzer can operate using the latest Windows software.
The Dymaxion Benchtop mass spectrometer is used for sampling gases over a wide range of pressures from high vacuum up to and beyond atmospheric pressure. The analyzer and inlet can be removed from the frame and placed up to ten feet from the pumping station using the included cable and vacuum hose. This system uses a Dymaxion mass spectrometer with choice of ion source, capillary inlet manifold, compound turbomolecular pump, dry or oil vane roughing pump, pump controller and optional laptop computer to run the System 2000 software. The analyzer can be designed for your specific application with a variety of options to meet your needs.
The Ethernet Dyamxion provides all of the features of the standard Dymaxion RGA but is configured to allow Ethernet connection The Ethernet Dymaxion software communicates directly to the PC using an Ethernet crossover CAT-5 cable plugged into an Ethernet port on the PC. Communication can also be established through a network (LAN) using a standard Ethernet cable between the Ethernet Dymaxion and the network. An Ethernet card must be installed in your PC to establish communication between the Ethernet Dymaxion and the PC.