Electromagnetic Method Instrument, Type CLEM-V

Electromagnetic Method Instrument, Type CLEM-V
Electromagnetic Method Instrument, Type CLEM-V
Electromagnetic Method Instrument, Type CLEM-V
Electromagnetic Method Instrument, Type CLEM-V
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  • Rectifier
  • Magnetic probe
  • Receiver
  • Transmitter
Application

● Exploration of deep underground metal and nonmetal mineral resources.
● Exploration of geothermal and groundwater resources.
● Exploration of oil and gas resources.
● Investigation of mined-out area of coal mine, Karst development and civil air defense constructions.
● Investigation of active faults and research in crust and earthquake.
● Inspection of highway and railway subgrades.
● Monitoring and inspection of environment pollution.

Component

The electromagnetic method instrument is composed by a KD30-1 rectifier, a CLEM-T30 high power electromagnetic method transmitter, a CLEM-R5 array electromagnetic method receiver, magnetic sensor and processing software etc.

Function

By the compound array detection that combines natural and artificial source field electromagnetic methods, the electromagnetic method instrument can conduct:
1. CSAMT
2. AMT
3. TDIP
4. FDIP
5. SIP
6. CR

Specification1. CLEM-T30 high power electromagnetic method transmitter
Frequency Range 8000Hz~1/128Hz
High density frequency 20 frequencies per magnitude order
Maximum voltage 1000V
Maximum current 30A
Maximum power 30kW
Power waveform Multi-frequency, single-frequency
Operating modes automatic or manual
Protection function Overvoltage, overcurrent and overheat protection
GPS synchronization accuracy UTC±20nS
OCXO synchronization accuracy 4μS/h ±0.081μS
Volume 660*440*440mm
Weight 43kg
2. CLEM-R5 array electromagnetic method receiver
Frequency Range 32kHz ~ 1/128Hz
Channels number 1 to 8 optional
Controller PC-104,300M main frequency
Storage Media DOC (2GB)
GPS Synchronization Accuracy UTC ± 20nS
OCXO synchronization accuracy 4μS/h ±0.081μS
Channel Gain 1,4,16,64,256 five pre-amp gains 1,2,4,8 main-amp gains
Volume 340*210*250mm
Weight 7.5kg (lithium battery included)
Feature

1. CLEM-T30 high power electromagnetic method transmitter
Multi-function transmission: The transmitter is capable of CSAMT, TDIP, FDIP, SIP and CR high-power transmission.
Single-frequency and multi-frequency power: The transmitter can measure multiple parameters, improving work efficiency.
Automatic sweep-frequency power: Power is automatically switched according to the set frequency, with no need for manual intervention.
High-accuracy GPS+OCXO synchronization: Without cumulative time drift, the transmitter can realize all-day accurate synchronized powering.
CPLD control technique: Software and hardware upgrade are allowed.

2. CLEM-R5 array electromagnetic method receiver
Multi-parameter measurement: The receive can conduct AMT, CSAMT, TDIP, FDIP, SIP and CR methods measurement.
Array observation: Receivers can operate singly or they can form an array and cooperate in a wireless network.
Automatic measurement: Automatic measurement can be applied to all methods, saving manpower and improving efficiency.
Synchronization: Without cumulative time drift, the high-accuracy GPS+OCXO synchronization can realize all-day accurate synchronized measurement.
Double ADC: There is a high-speed and a low-speed 24-digit ADC for each channel.
FPGA control technique: Software and hardware upgrade are allowed.

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