Delta Epsilon portable borehole loggers draw on a legacy of building logging systems in use around the world for more than four decades. Our borehole logging systems enjoy a hard-earned reputation for outstanding quality and performance. As the founders and former owners of Mount Sopris Instruments and operating for more than a dozen years as Delta Epsilon Instruments, Inc., we bring unmatched experience and dedication to the process of making portable borehole logging systems. Without compromise or frills, Delta Epsilon borehole loggers are designed to work reliably anywhere, anytime, even under the most demanding circumstances. Delta Epsilon has an equally long history designing and producing radiation detection instruments. Our latest offering, the SC-133 portable scintillometer, is in use in a variety of exploration and environmental monitoring applications around the world.

Application Notes

Choose from the following available documents:
Case Study Illustrating Use of Gamma and Electric Logs to Determine Favorable Site for Water Wells
Borehole Logging Application Note 1:
Elimination of the Z-effect in Gamma Logging for Uranium
Application Note 2:
A Simplified Method for Calibrating Gross-gamma Logging Probes
Water Finder Guide:
Procedure with examples to reduce and simplify interpretation of Electrical and Gamma Ray logs to quickly and accurately identify fresh water producing formations.

Portable Borehole Loggers

• Groundwater Exploration and Development
• Environmental and Geotechnical Studies
• Uranium and other Mineral Exploration and Evaluation
• General Geologic Studies

Precise, Portable, Rugged, Versatile. The Delta Epsilon family of portable borehole logging systems offers a combination of uncommon capability, ruggedness of design and ease of operation. Based on a legacy of building loggers in use around the world for more than four decades, a DEI borehole logging instrument is a superior working tool for the earth scientist and explorationist.

Thoughtfully designed and beautifully crafted, Delta Epsilon portable borehole logging systems are available in three basic configurations with depth capacities from a hand cranked 250 meter system to a 1000 meter motor driven system. Each configuration is a unique, versatile platform optimized for its intended purpose.

Every system features an integral data acquisition and uphole power unit. A PC computer serves as the operator interface, acquires and and displays logs or video in real time and stores and plays back data using DELogger software supplied with each logger. For additional log editing and plotting, software such as ViewLog or WellCad may be appropriate and can be supplied through Delta Epsilon.

Computers are normally supplied by the purchaser, but DEI can provide a quote for an appropriate computer with DELogger software installed if desired.

Portable Radiometric Instruments

Delta Epsilon Portable Scintillometers are characterized by innovative features, thoughtful field proven design, quality craftsmanship, and intuitively simple operation. Our handheld scintillometers are in daily use throughout the world and are superb working tools for the purposes for which they are intended.

Delta Epsilon SC-133 Portable Scintillation Counter

IDEAL FOR URANIUM EXPLORATION AND ANY DEMANDING FIELD APPLICATION The Delta Epsilon SC-133 Portable Scintillation Counter represents a functionally superior concept for a hand held gamma radiation detection device. Its rugged practical design, simple operation and high sensitivity make it well suited for uranium exploration applications as well as environmental monitoring and health physics dosimetry. It has also been designed to meet or exceed the ANSI N42 standards for hand held inspection and interdiction instruments for Homeland Security and Nuclear Safeguards.