The Model 8020-54 Vibrating Wire (VW) to Analog Converter provides a simple way to connect Geokon VW transducers to data acquisition systems that either do not have the ability to read a frequency signal and/or lack the ability to generate the proper excitation.

Output is a 0-5 V or 4-20 mA signal directly proportional to “digits”, and is easily converted to digits for analysis via simple formulae. Minimum and maximum digits from each transducer’s calibration sheet are entered directly, and outputs are automatically scaled and sloped to provide their complete 0-5 V or 4-20 mA range for each instrument. These analog outputs offer 16-bit resolution (1 part in 65536) with an accuracy of better than 0.1% (typical). In a similar fashion, temperature readings from the transducer’s thermistor are available with 10-bit resolution (1 part in 1024).

Please contact Geokon, Inc. for additional information.

This is a practical book for engineers and geologists involved in slope stabilization measures.

The book benefits from the authors’ large geotechnical experience in slopes in South and Central America and the Far East. It covers geology, mass movements and site investigation, with emphasis on residual and structured soils. The book presents a variety of solutions to landslip stabilisation, including drainage, slope protection, reinforcement, walls, anchors, nails, bolts, etc.

The last chapter describes geotechnical and meteorological instrumentation and alarm systems used successfully in Hong Kong and in Rio de Janeiro.

For more information, or to purchase online, please visit:
www.springeronline.com

The Model GK-404 Vibrating Wire (VW) Readout Box is a portable, low-power, hand-held device designed for the readout of all Geokon VW geotechnical instruments (Piezometers, Pressure Transducers, etc.) It is powered by two AA batteries, which provide for more than 20 hours of continuous operation.

Features include automatic power-off and a battery monitor with low-battery warning. The unit has a sealed enclosure, with membrane keypad, allowing operation in all weather conditions.

The GK-404 is particularly useful for instrumentation set-up and testing prior to installing more complex data acquisition monitoring systems.

Please contact Geokon, Inc. for additional information.