Delta Epsilon Instruments' portable borehole logging systems, distributed by Geotech, lower a geophysical probe down a well or borehole on a single conductor cable to log natural gamma radiation, electrical resistivity, and self-potential (SP) continuously with depth. The winch, tripod, and encoder mount to a portable frame — no truck-mounted rig required — for groundwater exploration, environmental site characterization, and geotechnical borehole logging.

Choose the depth capacity that fits your work: 1A-150 (150m, internal battery, 12VDC), 3A-300 (300m, 12VDC, with cases), or 600DL (600m, 12VDC, with cases).

Application: Pair with a compatible Delta Epsilon probe (such as the GE0809CB combo probe) to log borehole or monitoring well conditions for siting, characterization, or compliance work.

Specifications & manuals:

• Portable Borehole Loggers — specifications (PDF)
• 1A-150 Logging System — user manual (PDF)
• 3A-300 Logging System — user manual (PDF)

Need the 600DL user manual? Contact us and we'll send it over.

Need a replacement tripod, encoder, case, or other part for your logger? See Delta Epsilon Parts & Accessories.