Extending and expanding the life of older current meters



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The EG&G Model 610 VACM and Model 630 VMCM are standards for ocean current measurements. It is simple to add peripheral sensors to the data stream of the VACM by use of add-on CMOS circuitry. The firmware control of the VMCM makes it virtually impossible to add sampling of additional sensors. Most of the electronic components used in the VACM are obsolete or difficult to replace and the VMCM will soon follow suit. As a result, the USGS joined WHOI in the development of a PCMCIA data storage system to replace the cassette recording system in the VACM. Using the same PCMCIA recording package as the controller and recorder for the VMCM, a user-friendly VMCM is being designed. PCMCIA cards are rapidly becoming an industry standard with a wide range of storage capacities. By upgrading the VACM and VMCM to PCMCIA storage systems with a flexible microprocessor, they will continue to be viable instruments.

Additional publication details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Extending and expanding the life of older current meters
Year Published:
Publisher location:
Piscataway, NJ, United States
Larger Work Title:
Proceedings of the IEEE Working Conference on Current Measurement
First page:
Last page:
Conference Title:
Proceedings of the 1995 5th Working Conference on Current Measurement
Conference Location:
St.Petersburg, FL, USA
Conference Date:
7 February 1995 through 9 February 1995