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The Mass SURFER (Mass Spectrometer Using Rotating Fields for Exploratory Ranging) has the distinction of ranging in mass detection from 1 to >100,000 amu (atomic mass units) while consuming  <20 watts peak power.  Detection limits are below ppb (part per billion) levels.  We believe this instrument will have a wide variety of environmental applications.  These include: water quality monitoring of remote systems (e.g., space stations, shuttle, ships) and military base/municipal supplies, coastal and groundwater point and non-point source pollution monitoring, offshore oil exploration and production monitoring, exploration and monitoring of seafloor methane seeps and hydrothermal vents, and natural hazards and global climate research.  Beyond the Mass SURFER, our planned enhancements to field underwater mass spectrometers will make the next-generation instruments smaller, even lower power, and of greater sensitivity.

More about the MassSURFER

Portable MS Support and Test Electronics

Pace Tech also provides "lab" style boxes for the REFIMS, RFMS and new 3HMS with 120 Vac power and the ability to operate from an external 12 V battery.  An analog meter on the front indicates electrometer output for positive or negative ions.  The internal stack consists of CPU, power supply, synthesizer board, RF amplifier board, and high voltage board.  High voltage is provided by one or more variable (or other, user-specified) modules, circuit-protected and under software control.  A solenoid valve driver can be added under software control, and a membrane ion voltage output (0V to +10V) can be added using a trim pot for control.  The output voltage is programmable and tuned to be constant over the entire range.  Amplitude is up to 40 Vpp (60 Vpp differential).  Outputs are quadrature sinewaves, and we have a new, patent-pending digital drive.  The CPU has a memory capacity for about 100 full sweeps that increases by a factor of 10 to 100 with data compression.  Control is via an RS-232 serial port at 19.2 kbps.  Software updates can also be downloaded through this port.  The command structure is simple.  Predetermined algorithms control the sampling cycles of an instrument.  Sweep data are saved in battery-backed memory for later retrieval. The “Stack-in-a-Box” user interface is easy to use, and incorporates the latest version of our copyrighted software, called "Pace Tech SURFER."





©2007 Pacific Environmental Technologies
Honolulu, Hawaii USA