T-VLF - SYSTEM FOR GROUNDWATER ENVIRONMENT AND MINING |
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- Easy to use
- Fast and automatic
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The T-VLF is a radiowave receiver specially designed for high productivity surveys in groundwater, environmental and mineral exploration.
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FEATURES:
- T-VLF is an electromagnetic receiver which measures the magnetic transmitter in the frequency range of 10 to 30 KHz.
- T-VLF can be operated in two modes:
- the classical tilt angle mode based on the measurement of magnetic only components; this mode is used to prospect for conductive structures which may correspond to clayey or weathered zones, or to miniralized dyke-like structures.
- the resistivity mode based on the measurement of magnetic and electric components. In this mode, a short electric line and two metallic electrodes permit to measure the lectric field; this mode is used for mapping conductive and resistive zones and for prospecting resistive dyke-like structures.
- T-VLF consists in two parts:
- a back mounted unit including the magnetic sensors and the measuring system
- a hand helf field micro computer unit
- T-VLF is controlled by a microprocessor for:
- Frequency selection: two frequencies can be introduced for analysing simultaneously the waves coming from two transmitters.
- automatic filtering and ranging; digital stacking for signal enchancement, and computation of a quality coefficient.
- Computation of geophisical parameters from magnetic / electric fields measurements; tilt, ellipticity, fraser derivative, resistivity, phase.
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- Splash proof sensor unit: Dimensions: 43 x 24 x 24 cm (17 x 9.5 x 9.5 inches) with straps. Weight: 6kg (13 lb) including dry celss. Back mounted case, through strap system.
- Control and visualization T-shape unit: Dimensions: 27 x 20 x 4 cm (11 x 8 x 1.5 inches) Weight: 0.85kg (2 lb) with dry cell. keyboard: 16 keys (function and numeric modes) Graphic display: 240 x 64 dots
- Operating temperature range: -20°C + 50°C (-4°F to 122°F)
- Storage temperature range: -40°C + 80°C (-40°F to 176°F)
- Power supply for sensor: six 1.5V (D size) dry cells, or rechargeable batteries.
- Power supply for control unit: one 9V (6LR61 type) dry cell.
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