{"title":"Delta Epsilon Geophysical Logging Equipment","description":"\u003cp\u003eDelta Epsilon Instruments portable borehole geophysical logging systems and probes, distributed by Geotech Environmental. Used for groundwater exploration, environmental site characterization, and geotechnical borehole inspection — log natural gamma radiation, electrical resistivity, and self-potential continuously with depth using a portable, truck-free winch and probe system.\u003c\/p\u003e\u003cp\u003eLooking for replacement parts, tripods, cases, or accessories for your Delta Epsilon logger? See \u003ca href=\"\/collections\/accessories-parts\"\u003eAccessories \u0026amp; Parts\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"delta-epsilon-borehole-logger","title":"Delta Epsilon Borehole Logger","description":"\u003cp\u003eDelta Epsilon Instruments' portable borehole logging systems, distributed by Geotech, lower a geophysical probe down a well or borehole on a single-conductor cable and record parameters like natural gamma radiation, resistivity, and self-potential continuously with depth. Each system pairs a hand-crank or motorized cable winch with a depth-encoding tripod, a rugged 12VDC-powered control\/display unit, and USB\/PC logging software (DELogger, LAS-format output) — a portable, truck-free alternative to full logging-truck operations for water-well siting, environmental site characterization, and mineral\/uranium exploration.\u003c\/p\u003e\u003cp\u003eChoose the model that matches the depth you need to reach:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A-150\u003c\/strong\u003e — hand-cranked winch with an internal rechargeable 12VDC battery, 150m (492 ft) of 0.103\" single-conductor cable. The most portable, most economical system in the line, sized for shallow water-well and exploration logging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3A-300\u003c\/strong\u003e — motorized, semi-automatic level-wind winch running off a 12–14VDC source (e.g. a vehicle battery), 300m (984 ft) of cable, includes carrying cases. Delta Epsilon's most popular model — a step up for wells too deep to hand-crank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600DL\u003c\/strong\u003e — fully automatic level-wind winch, 600m (1,968 ft) of heavier 0.125\" cable, includes carrying cases. The deepest-rated, flagship system in the portable line.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e All three models accept the same family of Delta Epsilon slimhole probes (gamma, resistivity, caliper, fluid temperature\/conductivity, flowmeter) for groundwater exploration, aquifer\/lithology characterization, and geotechnical or mineral-exploration borehole logging — see our \u003ca href=\"https:\/\/www.geotechenv.com\/pdf\/geophysical_equipment\/deltaEpsilon_borehole_probes.pdf\"\u003eBorehole Probes spec sheet\u003c\/a\u003e for compatible probes.\u003c\/p\u003e\u003cp\u003eFull manuals: \u003ca href=\"https:\/\/www.geotechenv.com\/Manuals\/Delta_Epsilon\/Delta_Epsilon_1A-150_Logging_System.pdf\"\u003e1A-150 Logging System manual\u003c\/a\u003e | \u003ca href=\"https:\/\/www.geotechenv.com\/Manuals\/Delta_Epsilon\/Delta_Epsilon_3A-300_Logging_System.pdf\"\u003e3A-300 Logging System manual\u003c\/a\u003e | \u003ca href=\"https:\/\/www.geotechenv.com\/pdf\/geophysical_equipment\/deltaEpsilon_borehole_loggers.pdf\"\u003eBorehole Loggers spec sheet\u003c\/a\u003e (covers all three models).\u003c\/p\u003e","brand":"Geotech Environmental Equipment, Inc.","offers":[{"title":"1A-150 (150m)","offer_id":48751121268926,"sku":"82251002","price":20000.0,"currency_code":"USD","in_stock":true},{"title":"3A-300 (300m) w\/ Cases","offer_id":48751121301694,"sku":"82251000","price":23750.0,"currency_code":"USD","in_stock":true},{"title":"600DL (600m) w\/ Cases","offer_id":48751121334462,"sku":"82251008","price":34750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/3A-300_DE_borehole_logger.jpg?v=1787058229"},{"product_id":"delta-epsilon-ge0809cb-combo-probe-gamma-resistivity","title":"Delta Epsilon GE0809CB Combo Probe (Gamma\/Resistivity)","description":"\u003cp\u003eThe Delta Epsilon GE0809CB is a compact combination probe that logs natural gamma radiation, spontaneous potential (SP), 16\" normal resistivity, and single-point resistance simultaneously in a single pass down the borehole — a direct replacement for the older GE9409 probe. It's built for use with Delta Epsilon's battery\/single-conductor logging systems (1A-150, 3A-300, 600DL).\u003c\/p\u003e\u003cp\u003eNatural gamma logging reads the formation's natural radioactivity (concentrated in clay and shale), giving a lithology log that works in both open and cased, wet or dry holes. Resistivity logging measures how well the formation and pore fluid conduct electricity — controlled by porosity, pore-fluid salinity, and clay content — and is used to separate clay\/aquitard zones from sandy aquifer zones and flag fresh- vs. saline-water intervals. Running gamma and resistivity together in one probe gives a faster, depth-matched dataset for correlating lithology against water quality in a single trip down the hole.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e 44.5 mm (1.75\") diameter × 979 mm (38.5\") length, 4.5 kg (9.9 lb). Gamma 0–100,000 CPS; SP ±2000 mV; 16\" normal resistivity and single-point resistance 0–5000 ohm-m\/ohms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Groundwater exploration, aquifer characterization, and geotechnical\/environmental borehole logging. Pairs with our \u003cstrong\u003eLN Adapter (LNA0809)\u003c\/strong\u003e to add a second, deeper-reading 64\" resistivity measurement.\u003c\/p\u003e\u003cp\u003eSee the \u003ca href=\"https:\/\/www.geotechenv.com\/pdf\/geophysical_equipment\/deltaEpsilon_borehole_probes.pdf\"\u003eBorehole Probes spec sheet\u003c\/a\u003e for full details.\u003c\/p\u003e","brand":"Geotech Environmental Equipment, Inc.","offers":[{"title":"Default Title","offer_id":48751121432766,"sku":"52251000","price":11500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/GE0809cb_DE_borehole_probe.jpg?v=1787058273"}],"url":"https:\/\/envirotechonline.com\/collections\/delta-epsilon-geophysical-equipment-amp-accessories.oembed","provider":"EnviroTech Services","version":"1.0","type":"link"}