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Application scope:

1.Geothermal prospecting with vertical electric sounding resistivity(IP, SP, Resistivety)

2.Metal and nonmetal mineral resources detection

3.City geophysical exploration, railway and bridge inspection and so on

4.Hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults

Feature of ERT

? Making a subsurface map to overview the soil types/lithology

? Determining caves, voids and sinkholes before drilling and foundation work

? Determining optimal locations for drilling groundwater wells

? Investigating the depth to bedrock

? Monitoring engineered and natural slopes with a high potential for landslides

? Investigating and monitoring pollution plumes

? Determining economically-important mineral deposits

? Delineating archeological sites

? Time lapse Monitoring of subsurface processes such as groundwater recharge, saltwater intrusion, dam leakage, and mining operations

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Performance parameters

Technical specification:

Receiving parts:

Voltage:+-24V,+-0.5% 1bit,24bit A/D

Maximum voltage sampling resolution:0.01μV

Input impedance:≥50MΩ

SP compensation range:+-10V

Current:3.5A,+-0.5% +-1bit,24bit A/D

Maximum current sampling resolution:0.02μA

50Hz power frequency interference suppressing better than 80dB

Transmitting parts:

Maximum transmitting power:3500W

Maximum supply voltage:+-1000V(2000Vp-p)

Maximum supply current:+-3.5A(7Ap-p)

Power supply pulse waveform:duty ratio: 1:1 bipolar

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Others:

Display:160×160 LCD

Storage capacity: 1GB (expandable) Power supply: Internal battery (external 12V), provides continuous working hours more than 20 hours.

Main machine interface: A,B,M,N. HV DC, external power supply and charging port, RS-232 and USB port.

Dimension: 270mm×246mm×175mm

Weight: ≤4.2kg(WDDS-2)≤5.5kg (WDDS-2B)

Working temperature: -10℃~+50℃,95%RH Storing temperature: -20℃~+60℃

Internal high power battery (only WDDS-2B): Maximum working power 200V.

Similar products at different depth :

1.Receiver:? ?Geophysical Instruments Resistivity Meter
Voltage:	+-24V,+-0.5% 1bit,24bit A/D
Maximum voltage sampling resolution:	0.01μV
Input impedance:	?≥50MΩ
SP compensation range:	+-10V
Current	3.5A,+-0.5% +-1bit,24bit A/D
Maximum current sampling resolution:	0.02μA
2.Transmitter:?Geophysical Instruments Resistivity Meter
Maximum transmitting power:	3500W
Maximum supply voltage:	?+-1000V(2000Vp-p)
Maximum supply current:	+-3.5A(7Ap-p)
Power supply pulse waveform:	duty ratio: ?1: 1 bipolar
3.Others:Geophysical Instruments Resistivity Meter
Display:	160×160 LCD
Storage capacity: ?	1GB (expandable)
Power supply:	?Internal battery (external 12V), provides continuous working hours more than 20 hours.
Main machine interface:	?A,B,M,N. HV DC, external power supply and charging port, RS-232 and USB port.
Dimension: ?	270mm×246mm×175mm
Weight: ?	≤4.2kg(WDDS-2)≤5.5kg ?(WDDS-2B)
Working temperature:	?-10℃~+50℃,95%RH
Storing temperature: ?	-20℃~+60℃?
Internal high power battery	?Maximum working power 500V.

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