CMD - Multidepth Electromagnetic Conductivity Meters

Multi-depth profiling and mapping (0.15 - 60 m)Standard or custom-made probes (1 or 3 or 6 receivers)Fast sampling (up to 10 Hz), high temperature stabilityOne control unit for all probes (B/W or colo

  • Product Name:Multidepth Electromagnetic Conductivity Meters
  • Model:CMD
  • Maunufactor:Gf Instruments
  • Country:CZ

Multi-depth profiling and mapping (0.15 - 60 m)

Standard or custom-made probes (1 or 3 or 6 receivers)

Fast sampling (up to 10 Hz), high temperature stability

One control unit for all probes (B/W or colour display)

Simple operation, optional smartphone app

Manual and continuous measuring modes with GPS

Two Bluetooth channels (for probe and external GPS)

Real-time clock, map preview of area coverage

Data download via USB or flash disk

Rechargeable Li-Ion battery lasts for 2-3 working days

Lightweight and rugged design


Applications:

Geological and geotechnical survey, agriculture, archaeology, groundwater protection, environmental monitoring, raw material prospecting, metal object and network detection.

Large family of CMD electromagnetic conductivity meters is designed for survey depth ranges from 0.15 to 60 m. Used contactless method allows fast measurement of conductivity and inphase under all field conditions (including very dry and icy ground). Probes are equipped with 1, 3 or 6 receivers with excellent temperature stability. This way makes high resolution depth graded mapping as well as imaging of sections possible and useful for wide range of walking and moving applications.


Probes:

  • Measured quantities and ranges:

  • Apparent conductivity: 1000 mS/m, resolution 0.1 mS/m.

  • Inphase ratio: ± 80 ppt, resolution 10 ppm

  • Measurement accuracy: ± 4% at 50 mS/m.

  • Temperature stability: better than 0.1 mS/m /°C at slow temp. changes.

  • Maximum sampling rate: 10 Hz.

  • Full and half depth range (vertical and horizontal orientation of dipoles).

  • Power supply: rechargeable Li-Ion battery lasts 2-3 working days (except. CMD-DUO transmitter).

  • Operating temperature: -10°C to +50°C.


Control Unit:

  • Connection with probe is provided by cable or Bluetooth unit.

  • Five modes of measurements:

  • Manual measurement – the user starts measurement at each point by pressing the key or by probe button. The point position is updated automatically in the preset grid or can be entered directly. Each point can be re-measured or skipped and completed with a comment.

  • Continuous measurement – data are measured and saved continuously in chosen measuring period. The positions on the profile are determined by length marks with consequent recalculation of positions of individual readings.

  • GPS Manual measurement – the user starts measurement at each point by pressing the key or by probe button. The position is determined by GPS receiver.

  • GPS Continuous measurement – data are measured and saved continuously in chosen measuring period. The position is determined by GPS receiver.

  •         Search mode – data are measured continuously but are not saved.

  • Map preview of measured area (up to 15000 positions).

  • In-situ 1D inversion (two-layered model).

  • Two integrated Bluetooth channels.

  • Detachable GPS receiver (UTM/UPS recalculation possible).

  • USB data transfer or direct saving on USB flash disk.

  • Factory and user calibrations (stored in the probe).

  • Measurement time: 0.1 – 20 s.

  • 128 MB data flash memory:

  • max. 64 files.

  • max. 4.8 millions measured points.

  • Graphical B/W or colour display with backlight.

  • Real-time clock.

  • Power supply:

  • Rechargeable Li-Ion battery.

  • Supplementary 6 AA batteries (single-use or rechargeable NiCd or NiMh).

  • 12 V car socket.

  • Operating temperature: -10 °C to +50 °C.

  • Dimensions: 200 x 50 x 110 mm.

  • Weight: 0.65 kg (with Li-Ion battery).


Standard Control Unit Accessories:

  • AC-adapter 100-240 V AC (50-60 Hz)

  • Cable for 12 V car socket supply

  • Supplementary 6 AA battery holder

  • Carrying belt

  • (CMD-MiniExplorer, CMD-MiniExplorer 6L, CMD-DUO, CMD-1, CMD-Tiny)

  • Cable for data download to PC and flash disk

  • CD with software

  • Operation manual


Standard Probe Accessories:

  • Transport aluminum case (dimensions and shipping weight):

CMD-Tiny, CMD-1, CMD-2117 x 14 x 36 cm13.9, 15.2, 16.4 kg
CMD-4146 x 14 x 45 cm23.5 kg
CMD-4/6147 x 22 x 46 cm28.4 kg
CMD-DUO  72 x 20 x 93 cm32.7 kg
CMD-MiniExplorer137 x 14 x 37 cm17.0 kg
CMD-MiniExplorer 6L172 x 14 x 37 cm20.0 kg
CMD-Explorer134 x 25 x 36 cm25.5 kg
CMD-Explorer 6L159 x 15.5 x 46.7 cm26.0 kg


  • Holder for control unit, carrying belt and harness

(CMD-Explorer, CMD-Explorer 6L, CMD-4/6, CMD-4, CMD-2)

  • Probe holder with Bluetooth unit, AC adapter 100-240 V (50-60 Hz) and supplementary 6 AA battery holder

(CMD-MiniExplorer, CMD-MiniExplorer 6L, CMD-1, CMD-Tiny)

  • Probe connection cable


Optional Accessories:

  • Bluetooth adapter for wireless communication with probe

  • Husqvarna harness (adapted for front and side carrying)

  • Inversion and mapping SW (IX1D, Res2DInv/Res3DInv, Surfer)