About GWR Instruments, Inc - We are the sole manufacturer of the Ultra Stable Superconducting Gravimeter

GWR Instruments, Inc. is the sole manufacturer of the Superconducting Gravimeter which provides a stable, extremely precise long term gravity record.

The Superconducting Gravimeter (SG) was invented by J. Goodkind and W. Prothero in the mid 1960's. The company was formed in 1979 and is still privately held by two of its founders Richard Warburton and Richard Reineman. Over the years GWR Instruments, Inc. has evolved the SG: reducing its size and increasing Dewar efficiency, signal stability and precision while maintaining the core working principles of levitating a sphere in a superconducting magnetic field. The GWR OSG, Observatory Superconducting Gravimeter, offers the finest possible measurement of long term gravity signals. For additional level of certainty, it is also available in a Dual Sphere configuration. Combined with careful local geophysical monitoring, the OSG's offers unprecedented sub nano-gal resolution across a broad frequency band.

To encourage uses in more rugged or environmental noisy areas of interest, GWR Instruments introduces the i Grav™. This new simplified system maintains the same operating features as the tradition al OSG, but all built into one stand-alone "package". The complete 1/2 sized Dewar houses all the redesigned electronics and data system within the top portion of the Dewar. The modernized electronics simplifies setup and preserves the sensor characteristics. The smaller Dewar can be automatically cooled on demand in matter of days. Shipping and storage is simplified when the system is at room temperature. The result is a modular design that simplifies setup and allows for easier relocation to new sites.

With so much experience and expertise with cryogenics cooling gravity meter sensors it was a natural progression to develop a Helium Liquefier. In 2011 GWR Instruments will begin sales of highly efficient Helium Liquefaction Systems.