SEISMIC RECORDING EQUIPMENT
(Sub Surface Exploration Only)
RAS 12 & 24 Channel
& DS6 Distributive
Seismic Systems.
By SEISTRONIX TM
Authorized Dealer
Bret
W, Smith, Geophysicist.
The RAS 24 Seismograph
Available with 12 or 24 channels
24-Bit Delta-Sigma A/D conversion
Wide dynamic range (117db @ 2ms)
Connect up to ten boxes (240 chans)
3D on up to ten lines
Automated system performance tests
Intuitive operation under Windows 98
Operates with any laptop
Lightweight - 10 lbs
Uses standard 12 channel spread cables
The DS6 Unit in Field Location
24-Bit Delta-Sigma A/D conversion
1524 Channels on 32 lines
2D and 3D operation
Wide dynamic range (115db @ 2ms)
Lightweight - 9 lbs per box with battery
Automated system performance tests
Compact system controller
Intuitive operation under Windows
Uses industry standard spread cables
RESISTAR RS 100D NOW
AVAILABLE (2002 Edition) !
(WITH 133, MHZ PENTIUM AND
16MB OF STORAGE, FASTER MORE RELIABLE)
Resistivity System By
GEOFYZIKA TM
Authorized Dealer
Bret
W, Smith, Geophysicist.
| SPECIFICATIONS TRANSMITTER:
Power supply: 12 to 48 VDC Internal rechargablebattery pack. Output voltage: the power supply voltage can be increased by factor of 1, 2, 3, 4, 6 (i.e. 12 to 288 volts!) Output power: 1960 Watts Peak!. External DC exciting source: max. 360VDC @ 0.5 amps AB current: Range: 1mA - 500 mA Accuracy: max. 1% Current limit: Direct short hi-circuit: IAB MAX = 0.5A. Low-current: a) if current drops down to the half of the initial current value regardless of speed of drop b) If current drops under the chosen threshold value Current threshold AB value: 1mA or 10 mA (after setting up by operator) AB turn-off time: less than 100 ms for the power electrodes AB without grounding AB voltage commutation. Cycle time: 1to 20 seconds trapezoid shape Number of cycles (selectable): 2 to 99 (VES, SRP) Electrical insulation: Voltage strength: 4.5 kV insulating resistance (transmitter - box, 500 V for 1 min): more than 1000 Mohms. |
SPECIFICATIONS RECEIVER:
Power supply: 8.4 to 15 VDC Internal/External (8 cells of D size) Power consumption: max. 2mA/150 mA Standby / Active mode Number of inputs: 4 For the potential electrodes without grounding. Measuring range: 1 mV to +/-3.5 VDC Measuring accuracy: 1% Input impedance: 10 Mohm Auto. increasing gain: 1- 1024 In proportion Noise suppression: 80 dB/decade Limit low-pass filter on f = 5 Hz or 50 Hz Offset compensation: +/-2V (Step 1 mV) Automatic during resistivity measurement. Transmitter influence suppression: 140 dB Apparent resistivity Range: 10^-5 to 10^8 ohm/meters. Accuracy: better than 2 % |
| CONTROL COMPUTER: Display: LCD, 640x200 dots (CGA) Memory: 16 MB RAM Processor: 133 Mhz, Pentium Keyboard: QWERTY Operating system: DRDOS version 6.0 installed in the ROM memory Communication software: Microsoft interlink/interserver 1/0 Ports: RS232C (communication with another computer) Centronics (printer) Special serial, floating port to control supplement device ME-100 Dimensions: 290 x 210 x 145 mm Weight (without batteries): 4.7 kg Temperature operating: +5C to +45C Temperature storage: -10 C to +60 C |
Standard Accessories: Transport case rugged and durable. Harness. Connectors. Computer connection cable RS-232C. Instruction manual. User's Quick Manual PC manual. Diskette 3.5" with service software (GEOI, Communication, Configuration for VES) OPTIONS: Rechargable battery pack for transmitter Rechargable battery pack for receiver ME-100 inteligent electrode switching system GT-1000 1kw geoelectrical transmitter |
| ME-100 ELECTRODE SPECIFICATIONS:
Number of boxes: max. 248, To be operated at the moment: 248 from the left of the interface box, 248 from the right of the interface box Number of electrodes: Max.To be operated at once: 496 Controlled by one box: 2 pcs Distance between boxes: 4 m (optionally 10 or 20m) Distance of electrodes: 2 m (optionally 5 or 10m) Number of boxes per section: 4 pcs (optionally arbitraiy) Power supply of each box: Power voltage: 5.5 - 14 VDC (from ResiStar RS-100M) Input current on the input of each box: 1mA constant Input current on the input of the box during switching: 21mA for 10ms Speed of communication (fixed): 9600 bps Feedback info about switching the relay: yes Set-up the physical addresses: managed by the system Identification of array: managed by the system SPECIFIC FEATURES: Size of box: 98 x 64 x 39 mm Weight of Cable section ME-100: 2 kg Weight of interface box: 0.5 kg Length of an interface cable: 4 m (10 or 20 optional) Length of electrode MEB-40: 400 mm Weight of electrode + wire: 0.55 kg Wire length : 1.2 m Cable type: 9-wire cable Operation temp. range: -10C to +40C DO NOT HESITATE TO CONTACT ME FOR A PRICE QUOTE. I'LL TRY TO GET YOU THE BEST PRICE POSSIBLE. |
New Geonics Geophysical Equipment
| EM 38 |
| EM 34 |
| EM 31 |
| EM 39 (S) |
| EM 61 |
EM 38
Designed to be particularly useful for agricultural surveys measuring
soil salinity,the EM38 can cover large areas quickly without ground
electrodes. Based on the same patented induction principle as the EM31,
the EM38 provides depths of exploration of 1.5 meters and 0.75 meters
in the vertical and
horizontal dipole modes respectively.
Very lightweight and only one meter long, the EM38 provides rapid surveys with excellent lateral resolution. Measurement is normally made by placing this instrument on the ground and recording the meter reading. Digital meters are located on the top and the side of the EM38 for the horizontal and vertical dipole measurements. Continuous or station measurements can also be taken from a standing position using the optional carrying handle with trigger and cable for connection to the DL720 data logger. In this mode of operation 3000 data points can easily be obtained in one hour.
The EM38 has proven very useful in many geotechnical applications
such as in archeology where use can also be made of the inphase
component giving a measurement of the soil magnetic susceptibility.
EM 34
The EM34-3 is a fast, simple to operate, cost-effective instrument for
the engineering geophysicist, geologist and hydrogeologist alike and
has been particularly successful for mapping deeper groundwater
contaminant plumes and for groundwater exploration. Using the same
patented inductive method as the EM31, the EM34-3 uses 3 intercoil
spacings to give variable depths of exploration down to 60 meters. With
the 3 spacings and 2 dipole modes (horizontal
coplanar as shown and vertical), vertical electrical soundings can be
obtained.
In the vertical dipole (horizontal-conplanar) mode the EM34-3 is very
sensitive
to vertical geological anomalies and is widely used for groundwater
exploration
in fractured, faulted and weathered bedrock zones. In regions of
particularly
high cultural and atmospheric noise the higher powered EM34-3XL
improves
the signal to noise ratio by a factor of 10 at the 40 m spacing and by
4
at the 10 m and 20 m spacing. The EM34-3 comes complete with an output
connector
for digital data logging with the DL720 as well as input ports which
can
be used with a rechargeable battery option.
EM 31
The EM31-MK2
is an updated version of the standard EM31 with the data logger
now incorporated into the control console. Ground conductivity
and in-phase measurements are read directly from the data logger
screen. The data
logger is readily removed from the console for easy data handling or,
if
preferred hand carried during the survey. The EM31-MK2 maps geological
variations,
groundwater contaminants or any subsurface feature associated with
changes
in the ground conductivity using a patented electromagnetic inductive
technique
that makes the measurements without electrodes or ground contact. With
this
inductive method, surveys can be carried out under most geological
conditions
including those of high surface resistivity such as sand, gravel and
asphalt.
The effective depth of exploration is about six meters, making it ideal
for
many geotechnical and groundwater contaminant surveys. Important
advantages
of the EM31-MK2 over conventional resistivity methods are the speed
with
which surveys can be conducted, the precision with which small changes
in
conductivity can be measured and the continuous readout and data
collection
while traversing the survey area. The in-phase component is especially
useful
for detecting shallow ore bodies and buried metal hazardous waste.
EM 39 & 39S
The EM39
provides measurement of the electrical conductivity of the soil and
rock surrounding a borehole or monitoring well, using the inductive
electromagnetic technique. The unit employs coaxial coil geometry with
an intercoil spacing of 50 cm to provide a substantial radius of
exploration into the formation while maintaining excellent vertical
resolution. Measurement is unaffected by a conductive borehole fluid or
the presence of plastic casing. The instrument operates to a depth of
500 metres. The combination of a large conductivity range, high
sensitivity and very low noise and drift, allows accurate measurement
of subsurface conditions; typical applications include groundwater
contamination monitoring, groundwater and mineral exploration, and
general geotechnical applications. The 4-conductor EM39 probe can be
used with many available
borehole logging systems or with Geonics dedicated winch and console
system.
Measurements can be either recorded with the DL720 digital data logger,
or
viewed in real time using the EM39RT program with field computer.
EM 61
Advanced Metal Detector
The EM61,
one of the newest instruments from GEONICS, is a time-domain
metal detector which detects both ferrous and non-ferrous metals. A
powerful transmitter generates a pulsed primary magnetic field in
the earth, which induces eddy currents in nearby metallic
objects. The eddy current decay
produces a secondary magnetic field measured by the receiver
coil. By
taking the measurement at a relatively long time after the start of the
decay,
the current induced in the ground has fully dissipated and only the
current
in the metal is still producing a secondary field. The responses
are
recorded and displayed by an integrated data logger.The EM61
detects a single 200-litre (55 gal) drum at a depth of over 3 metres
beneath the instrument,
yet is relatively insensitive to nearby cultural interference, such as
fences,
buildings and power lines. The response is a single, sharply defined
peak,
greatly facilitating quick and accurate location of the target. Depth
of
the target can usually be estimated from the width of the response. The
system can be pulled around as a trailer with odometer mounted on the
axle
to trigger the data logger or it can be carried by a single operator
with
a shoulder harness.
G858 Portable Cesium Magnetometer/Gradiometer
A Professional Magnetic Mapping System
The G-858 MagMapper uses a graphical interface to make
survey design and data acquisition quick and efficient. Various
modes of operation allow the user to custom design a survey grid
for their particular needs. The operator also has the ability to
view his/her position on the grid
and the current data profile during the survey. Sensitivity,
resolution,
and recording rate of the cesium magnetometer are user selectable.
G-858 data acquisition offers either continuous or discrete station recording. The high sampling rate of the instrument in continuous mode allows the operator to survey an area at a fast walking pace. A wider search radius can be achieved by using a gradiometer configuration. As a result, over-all costs are inherently lower while data quality remains high.
The G-858 is designed to interface easily with standard computers
and
peripherals. Geometrics encourages clients to provide their own
processing
computer hardware. Upon the client's request Geometrics will
provide
a complete and fully integrated processing station at a nominal
price.
| Specifications:
Operating Principle: Self-oscillating split-beam |
Features: Portable Cesium
Magnetometer/Gradiometer Features High Sensitivity - Easily detect a single drum buried 6 meters Very Fast - Cover two acres per hour at 2 meter line spacing. Immediate User Feedback - Display Earth's field survey grid, position and 5 stacked survey profiles. Easy to Use - Produce hard copy maps at base site within minutes using standard IBM-compatible computers and peripherals. Options - Simultaneous vertical or horizontal gradiometer, Differential GPS positioning, Target analysis software. Portable Cesium Magnetometer/Gradiometer Features High Sensitivity - Easily detect a single drum buried 6 meters Very Fast - Cover two acres per hour at 2 meter line spacing. Immediate User Feedback - Display Earth's field survey grid, position and 5 stacked survey profiles. Easy to Use - Produce hard copy maps at base site within minutes using standard IBM-compatible computers and peripherals. Options - Simultaneous vertical or horizontal gradiometer, Differential GPS positioning, Target analysis software.
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