The 4.5 Kg CIST/884 with GPS Clegg Impact Soil Tester, manufactured by SDi, provides a simple and effective method for measuring and controlling soil strength and consolidation levels during trench reinstatement. Designed for straightforward single-button operation, the rugged instrument features a clamped readout mounted on the guide tube for easy viewing during use. With built-in GPS, Bluetooth data transfer, and onboard data logging, it enables accurate location referencing and efficient reporting for site compaction testing.

• Rugged tool for checking trench reinstatement and soil strength
• 4.5 Kg standard hammer
• Impact Value (IV) readings stored in memory
• Bluetooth data download capability
• User-selectable %CBR calculation and display
• Onboard data logging and storage
• Integrated GPS for latitude and longitude recording
• Wireless data transfer to PC using supplied software
• Single-button operation
• Carry case included
• Designed for prolonged use in damp, dirty and harsh environments
• High-strength alloy readout unit
• Powered by 2 x ‘C’ batteries (approx. 12 months operation)
• Compact and reliable construction

• Confirms uniform compaction over wide ground areas
• Identifies poorly compacted zones and ineffective rolling
• Suitable for trench reinstatement and subgrade testing

• 4.5 Kg hammer operates within a vertical guide tube
• Hammer dropped from 450 mm height onto test surface
• Deceleration measured and displayed as Impact Value (IV)
• Fourth drop reading recorded as final IV result
• Automatic GPS fix taken during hammer drops

• Model Number: CIST/884/4.5K/Stor/Blu
• Hammer Weight: 4.5 Kg (Optional 2.25 Kg and 0.5 Kg hammers available)
• Readout Display: Backlit alphanumeric vertical display, clamped to guide tube
• Readout Range: Up to 101 Impact Values (IV)
• Power Source: 3V from two ‘C’ cells (approx. 12 months battery life)
• Battery Level Indicator: Displayed at switch-on
• Controls: Single push button, auto switch-off after 5 minutes
• Data Storage: Flash memory for approx. 10,000 five-drop tests including IV readings, time, date, latitude, longitude and satellite count
• Data Transfer: Bluetooth™ wireless transfer with USB dongle supplied
• Data Files: CSV for Excel™; KML for Google Earth™ and Google Maps™; includes Ordnance Survey GB Eastings & Northings
• GPS Accuracy: Typically <5 metres; OS grid reference to 1m resolution
• %CBR Display: Software selectable with memory storage
• QA Firmware: TREND algorithm checks inter-IV readings and displays ‘ABORT’ if surface fails
• System Software: PC software for data transfer, real-time viewing and configuration
• Transit & Storage Case: Type CIST/WTS/09 wooden case included
• Dimensions: Approx. 71 x 13 x 13 cm
• Instrument Weight: 6.9 Kg
• Packed Weight: 12.0 Kg