POLARES32

Electrical imaging system in alternate current

POLARES32 electrical imaging system for tomography makes use of innovative technology based on Alternate Current (AC) to simultaneously measure and display all survey parameters: soil resistivity, current, voltage, self potential, induced polarization and quality of the measurements. Compact-sized, simple and intuitive, it easily manages all multi-electrode array configurations for the measurement of apparent resistivity: Schlumberger, Wenner, Dipole-Dipole and any other User defined 4-poles configurations. Equipped with an automatic “multiplexer” to commute signals on the different electrodes, the instrument can measure both current and voltage with microprocessor-controlled sequence of measurements. The acquisition controlling system, the power section and the multiplexers for the first 32 electrodes are now integrated in the main unit. POLARES32 works connected with external laptop PC (to be supplied by the End User); with its data acquisition software supplied with the instrument - with free upgrades for the whole lifetime of the instrument - it has been designed to be a very flexible ERT system, easy to use and with top-level performances. The simple and intuitive data acquisition software allows you to test all the electrodes, quickly set all the acquisition parameters, manage the type of spreading chosen, always have the measurements under control and save the acquisitions directly in your project directory. The 12V battery used to energize the ground remains external (not included in the supply, as it is easily available everywhere), together with the signal switching system for each set of 16 electrodes in addition to the first 32 (e.g. the 48-electrode system includes 1x external MPX).

Models
Methodologies

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THE STANDARD  CONFIGURATION INCLUDES:

  • Data acquisition software for external PC*
  • POLARES32-to-PC USB connecting cable
  • Testing connector for MPX
  • Power cable for external 12V battery*

 

ACCESSORIES    POLARES32

Switching box for managing each group of 16 electrodes. Compatible with both POLARES and RM-1.

For 16 electrodes - standard spacing: 5m (80m length) or 10m (160m length).

1 for each 16 electrodes, starting from 48 electrodes and up. They connect two successive MPX with each other, standard lengths 85 and 170m.

Stainless steel stake, length 500mm, diam.10mm, supplied with connecting clip for multielectrode cable (16 electrodes required for each cable)

A very useful tool to test the performance of your earth resistivity meter before a measuring session in the field. Compatible with all PASI earth resistivity meters.

POLARES adapter for connecting standard AB & MN cables and perform 1D-VES (with 4 electrodes).

50, 100, 200, 300, 500 m cables mounted on reel, cross-section 1 mm.

Pair of stakes in stainless steel for current electrodes (AB), diam. 15mm, length approx. 500mm.

Pair of stakes in copper for potential electrodes (MN), diam. 22mm, length approx. 500mm.

Pair of 2.5 kg mallets with ergonomic handle, ideal for driving stakes into the ground.

USB GPS antenna; it can be used for geopositioning of an instrument connected to PC (es. GEA24, GEA3, RM-1, POLARES32, Gemini-2) or for synchronization of acquisitions among more instruments (es. 2 or more Gemini-2s).

TECHNICAL SPECIFICATIONS
POLARES32

2-YEAR WARRANTY

External data ports (only PC connection)
USB
Connectivity 
USB
Optional Connectivity
Ethernet, Wi-Fi, Bluetooth, RS232, RS485, USB client, GPS, etc. (by external PC)
GPS (optional)
USB receiver for georeference of measures to be connect to the external PC
DSP (Digital Signal Processor)
ATMEL Cortex M4 120 Mips
Converters
A/D 24 bit
Voltage measurement range
300V or 6V with autoranging
Current measurement range
3A rms
Frequencies that can be generated
125Hz, 62.5Hz, 31.2Hz, 15.6Hz, 7.8Hz
Measurement validate
DC component, distortion, background noise, phase excess, sigma modulus,
phase sigma 
Max. number of steaks (electrodes)
Unlimited
Max. number of scans for measurement
Unlimited (limited by storage capacity of external PC)
Results that can be stored to memory (scan)
Unlimited (limited by storage capacity of external PC)
Scan velocity
Up to 3 scan/sec
Voltage that can be generated
700V pp
Current that can be generated
4A pp
Power that can be generated
200 W
Thermal protection
Heatsink and inside case alarms with system shutdown
Power supply
8.5V= / 15V= lead or lithium external battery (not included in the supply); 30A internal fuse, protection against polarity inversions, Safety Emergency external Switch
Operating temperature range
-20°C / +50°C
Storage temperature range
-40 °C / +80 °C
Dimensions and Weight
406x335x174mm; 7,2kg Shock resistant PELI case IP 67
Technical specifications subject to change without notice
External data ports (only PC connection)
USB
Connectivity
USB
Optional Connectivity
Ethernet, Wi-Fi, Bluetooth, RS232, RS485, USB client, GPS, etc. (by external PC)
GPS
USB receiver for georeference of measures to be connect to the external PC
DSP (Digital Signal Processor)
ATMEL Cortex M4 120 Mips
Converters
A/D 24 bit
Voltage measurement range
300V or 6V with autoranging
Current measurement range
3A rms
Frequencies that can be generated
125Hz, 62.5Hz, 31.2Hz, 15.6Hz, 7.8Hz
Measurement validate
DC component, distortion, background noise, phase excess, sigma modulus, phase sigma
Max. number of steaks (electrodes)
Unlimited
Max. number of scans for measurement
Unlimited (limited by storage capacity of external PC)
Results that can be stored to memory (scan)
Unlimited (limited by storage capacity of external PC)
Scan velocity
Up to 3 scan/sec
Voltage that can be generated
700V pp
Current that can be generated
4A pp
Power that can be generated
200 W
Thermal protection
Heatsink and inside case alarms with system shutdown
Power supply
8.5V= / 15V= lead or lithium external battery (not included in the supply); 30A internal fuse, protection against polarity inversions, Safety Emergency external Switch
Operating temperature range
-20°C / +50°C
Storage temperature range
-40 °C / +80 °C
Dimensions and Weight
406x335x174mm; 7,2kg Shock resistant PELI case IP 67
Technical specifications subject to change without notice