Geoprobe7822DT是美国Geoprobe公司专门为土壤地下水污染调查领域研发，该设备结构紧凑，功能多样，重量约为3.5吨，配备58马力的8缸久保田柴油发动机，液压达到4000psi，可在一些其他设备采样受限的区域进行作业。
7822DT的核心部件是GH64液压冲击锤，冲击频率每分钟可达1920次，每次冲击力在20000磅以上。内置六角驱动头，可提供双向旋转快速路面钻探、混凝土取芯、进行锚定或螺旋钻探功能。冲击锤也具有回拔功能，具有超过20吨回拔力的绞盘系统。
7822DT配置为主机、1.5英寸钻杆、2.25英寸钻杆、2.25英寸双套管土壤采样系统、MC5土壤采样系统、SP16地下水采样系统、4.25中控螺旋钻系统、灌注系统等。
7822DT Specifications
| Stroke | 78 in. | 1,981 mm |
| Weight | 7,555 lb. | 3,427 kg |
| Width | 60 in. | 1,524 mm |
| Length (folded) | 133 in. | 3,378 mm |
| Height (folded) | 99.5 in. | 2,527 mm |
| Height (unfolded) | 184 in. | 4,674 mm |
| Lateral Movement (side-to-side) | 25 in. | 635 mm |
| Oscillation | +/- 10 degrees | |
| Foot Travel | 20.5 in. | 521 mm |
| Extension | 15.5 in. | 394 mm |
| Down Force | 36,000 lb. | 160 kN |
| Retraction Force | 48,000 lb. | 214 kN |
| Hydraulic Pressure (system) | 4,000 psi | 276 bar |
| Hydraulic Flow Rate (system) | 40 gpm | 151 Lpm |
| Hammer System | GH64 | |
| Percussion Rate | 32 Hz | |
| Torque (hammer motor) | (see below) | |
| Rotation Rate (hammer motor) | (see below) | |
| Fuel Capacity (diesel) | 17 gal | 64L |
| Engine (diesel) | Kubota, 4-cylinder turbo | |
| Engine Power | 58 hp | 43 Kw |
| Outrigger Extension | N/A | |
| Rear Stabilizer Lift | 2,000 lb. | 907 kg |
| Ground Speed | 0-5 mph | 0-8 kph |
| Surface Load | 4.6 lb/in² | 0.32 kg/cm² |
| Winch Rating | 2,350 lb. | 1,066 kg |
| Winch Speed | 0-110 fpm | 0-34 m/min |
| GH64 Hammer Specifications | ||
| Torque (high torque/low speed) | 450 ft. lb. | 610 N·M |
| Torque (low torque/high speed) | 225 ft. lb. | 305 N·M |
| Rotation speed (low speed/high torque) | 0-250 rpm | |
| Rotation speed (high speed/low torque) | 0-500 rpm | |
| Augerhead Specifications | ||
| Torque (high torque/low speed) | 4,000 ft. lb. | 5,423 N·M |
| Torque (low torque/high speed) | 2,000 ft. lb. | 2,712 N·M |
| Hex adapter | 1-5/8 in | 41 mm |
| Rotation speed (low speed/high torque) | 0-75 rpm | |
| Rotation speed (high speed/low torque) | 0-150 rpm (GA4000) | |
| Rotation speed (high speed/low torque) | 0-750 rpm (GA4100) | |
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