G-857 Magnetometer
The G-857 provides a reliable, low-cost solution for a variety of magnetic search and mapping applications. Single keystroke operation means the G-857 can be operated by non-technical field personnel and used in teaching environments.
Utilizing the well-established proton precession method, the system allows for accurate measurements to be made with virtually no dependence upon variables such as sensor orientation, temperature or location.
Utilizing the well-established proton precession method, the system allows for accurate measurements to be made with virtually no dependence upon variables such as sensor orientation, temperature or location.
G-857 Magnetometer
The automated cycling option with long sensor cable and external power connection allows the surveyor to use G-857 as a base station instrument for measuring the diurnal changes in the Earth’s magnetic field. Optional GPS allows data to be stamped with time and Latitude/Longitude positions. Quickly and easily upload GPX waypoint survey routes to the GPS for in-field navigation using MagMap software. If you’re looking for a basic low-cost magnetometer with base station configurations, the G-857 Proton Magnetometer is the instrument of choice.
Features and Benefits
- Versatile: Use as a survey magnetometer or base station for diurnal corrections.
- Economically Priced: Great for academic settings, small companies, or personal hobbies, as well as professionals in the oil and gas industry.
- Great for Any Application: Well suited for mapping geological structures, mineral exploration, and search for industrial, environmental, or archaeological targets.
- Easy to Operate: Designed for use by experienced and non-skilled personnel.
- Rugged Weatherproof Construction: Works in extreme weather and temperatures.
- Optional Integrated GPS with In-Field Steering: Data points can be stamped with GPS position and time.
Technical Details
G-857 Magnetometer
- Resolution: 0.1 nT.
- Clock: Julian date, accuracy 5 sec. per month.
- Tuning: Auto or manual, range 20,000 to 90,000 nT.
- Gradient Tolerance: 1000 nT/meter.
- Max Sample Rate: 0.6 Hz.
- Read: Manual, or auto cycle for base station use.
- Memory: 65,000 field or base station readings.
- Display: Six-digit display of field/time, three-digit auxiliary display of line number, day.
- Digital Output: RS-232, switch-selectable to 115200 baud.
- Digital Input: Will accept external cycle command.
- Physical: Console: L: 18 cm; W: 27 cm; H: 9 cm; Weight: 2.7 kg (7x10.5x3.5 in; 6 lb).
- Sensor: DIA: 9 cm; L: 13 cm; Weight: 1.8kg (3.5x5 in; 4 lb).
- Environmental: Meets specifications within 0° to +40°C (+32° to +105°F). Will operate satisfactorily from -20° to +50°C (-40 to +122°F).
- Power: 12 Volt rechargeable Gel Cell.
- Standard Accessories: Sensor, staff, chest harness, two sets of batteries, RS-232 cable, USB Serial adapter, operations manual, applications manual, MagMap software.
- Options: External power/RS-232/sensor cable, rechargeable battery and charger set, Garmin® Oregon 600® GPS.
Shipping Weights & DIMS |
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|---|---|---|
| Contents | Dimensions (L x W x H) | Weight |
| Case 1 - G-857 Magnetometer | 27in x 8in x 12in 69cm x 20cm x 31cm |
31lbs 14kg |