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GSM-19T(W)
Proton Precession Magnetometer/Gradiometer
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For geophysical survey groups who require a complete solution for end-to-end
magnetic data acquisition at an affordable price, the QuickTraker (GSM-19T)
proton precession family is the proven choice - for even the most challenging
environments. |
| The GSM-19T also provides numerous technologies
that differentiate it from other systems. For example it is the only proton
precession system with integrated GPs (optional) for high, sensitivity,
accurately positioned ground surveys. With other v6.0 upgrades, QuickTracker also leads in sensitivity, memory, base station technology, and other key areas. Designed From Me Ground Up Leading the list of advances is GEM's rover unit which features a 25% increase in sensitivity - reflecting new processing algorithms and implementation of the latest RISC microprocessors. In addition. v6.0 standard memory is 4 Mbytes (expandable in 4 Mybte increments) which translates into 209,715 readings of line / station data or more than 600,000 readings for base station units. The new memory capacity sets an industry standard, but more importantly, it means that operators can now handle even the largest surveys with ease. Another important innovation is GEM's unique programmable base station which you can enable via either a field unit or a personal computer as follows: Daily scheduling (define working hours and minutes each day). This mode provides economy of memory and battery usage on a daily basis. Flexible scheduling (up to 30 on / off periods). Simply define a series of intervals and the base station will turn itself on as you need. This mode provides the greatest flexibility for longer surveys where leaving your base station running increases efficiency. Immediate start. This mode is the traditional mode of starting a base station unit and leaving it until the operator can return to turn off the unit. Survey Planning and Efficiency One of the traditional challenges in ground magnetometer / gradiometer surveys is ensuring that surveys am designed and implemented as effectively as possible. With the v6.0 proton precession system, GEM addresses this challenge through standard GEM capabilities. such as the Walking Mag option that enables the operator to sample while walking. Though there is some increase in noise, many users find this is balanced by improved field productivity. Having nearly continous data on survey lines also helps increase the accuracy of interpretations. Another innovation is GPS way point preprogramming. Now you can define a complete survey in the office on your Personal Computer and download this information directly to a rover unit via RS232. Then, the operator simply performs the survey using the points as their survey guide -- with a resulting decrease in errors and more rapid survey completion. Survey Operations QuickTracker also helps the operator on a daily basis while performing surveys. A key feature is the easy-to-read LCD data display in graphical (or text) format along with a signal quality indicator to determine when readings need to be repeated. And, although GEM'S proton precession unit is very tolerant to gradients, it also provides a warning indicator So that the operator can monitor data quality continuously. Other features operators appreciate include easy-touse line and station incrementing , as well as end-of-line indicators. Fast Data Transfer Another traditional area in which time is lost in surveys is in data transfer. In v6.0, GEM addressed this in several ways: Data download is tripled to 115 KBaud (fastest rate possible with RS-232). PC-based data reduction is now possible using an upgraded version of GEMLinkW, GEM's proprietary date transfer software. GPS and Other Software GEM Systems recently became the only manufacturer to provide a fully integrated GPS option for its' line of proton precession products. Along with meter to sub-meter positioning options, the new processing functionality enables users to take advantage of the benefits of GPS. Some of the capabilities include: 1. Pre-programming of way points. 2. Post-processing of GPS data. GEM's DGPS option enables transfer of GPS data for post-processing and merging via 3rd party software. 3. Precise time synchronization of field and base station units. This capability is particularly important for working in noisy magnetic conditions and provides the highest accuracy possible. SPECIFICATIONS: Sensitivity: <0.1 nT (0.2 nT at 1 or 2 sec rate with 'W' option) Resolution: 0.01 nT Absolute Accuracy: 1 nT Dynamic Range: 10,000 to 120,000 nT Gradient Tolerance: Over 7000 nT/m Sampling Rate: 1 reading per 3 to 60 sec, (1 to 60 sec for 'W' walking option) Operating Temperature: -40C to +60C OPERATING MODES: Manual: Coordinates, time, date and reading stored automatically at minimum 3 second interval. Base Station: Time, date and reading stored at 3 to 60 second intervals. Remote Control: Optional remote control using RS-232 interface. Input / Output: RS-232 or analog (optional) output using 6-pin weatherproof connector. STORAGE: (4 Mbytes) can be expanded up to 32 Mbytes Mobile: 209,715 readings Base Station: 699,050 readings Gradiometer: 174,762 readings Walking Mag: 299.593 readings DIMENSIONS: Console: 223 x 69 x 240mm Sensor: 170 x 71mm diameter cylinder WEIGHTS: Console: 2.1 kg Sensor and Staff Assembly: 2.2 kg STANDARD COMPONENTS: GSM-19T console, GEMLinkW software, batteries, harness, charger, sensor with cable, RS-232 cable, staff. instruction manual and shipping case. VLF OPTION: Frequency Range: Up to 3 stations between 15 to 30.0 kHz Parameters: Vertical in-phase and out-of-phase components as % of total field. 2 relative components of the horizontal field. Resolution: 0.1 % of total field |
Back to magnetometer indexCall GISCO / 1-800-523-1526 (952-929-8000)
FAX 952-926-5498 / EMAIL:sales@giscogeo.com
