Grad601 Single & Dual Sensor Magnetic Gradiometers

The exceptional temperature stability of the sensors ensures minimal drift during surveys and reduces the need for adjustment. All adjustments are accomplished automatically using a single pushbutton and audible cueing.

The Grad601-1 and Grad601-2 gradiometers are supplied complete with cables and accessories in a rugged carrying case. The Grad601-2 dual gradiometer includes an adjustable harness which completely relieves the operator’s arms whilst carrying the instrument.

Features

• 1m vertical spacing for deep anomalies
• 1 or 2 sensor operation
• High stability and simple electronic adjustment
• Selectable 0.1nT or 1nT resolution
• Non-volatile flash memory for 125k readings
• 1, 2 or 4 lines/m for single or dual version
• 1 to 8 readings/m on each line with automatic averaging or single shot
• Low power – 24 hour operation from one charge
• Survey and Scan modes with audio output
• Battery unit has built-in charger and field replaceable battery
• Battery fuel gauge
• Variable survey pace
• Variable scan threshold
• Simple download operation – 6.5 mins max
• Selectable output format
• Simple 6-key operation
• 50/60Hz powerline rejection

The gradiometer operates either in survey mode, where data is logged whilst covering the site in parallel or zigzag paths, or in a scanning mode where it is used as a search tool with an audible output without data logging. The scanning mode is used to locate archaeological features, pipes, cables, waste drums and unexploded ordnance.