Towed transient electromagnetic equipment

The main technical parameters of the towed transient electromagnetic equipment are as follows:

Main unit

One main unit, including wireless and wired data transmission modules.

Receiver noise level: ≤10nV/√Hz.

Equipped with two acquisition modes: fixed-point measurement and continuous towed measurement. (Provide supporting materials such as photos, color pages, or product manuals)

Protection level: ≥IP57. (Provide supporting materials such as photos, color pages, or product manuals)

Towing antenna

Towing antenna: 5 sets. (Provide supporting materials such as photos, color pages, or product manuals)

5-channel towed synchronous acquisition; can be modularly disassembled for standalone use and assembled for combined use. (Provide supporting materials such as photos, color pages, or product manuals)

Testing principle: Reverse dual magnetic source equivalent reverse flux transient electromagnetic method principle. (Provide supporting materials such as photos, color pages, or product manuals)

Emission frequency range: 1~250Hz (low frequency ≥1.25Hz, high frequency ≥200Hz). (Provide supporting materials such as photos, color pages, or product manuals)

Receiving antenna resonant frequency: ≥70kHz. (Provide supporting materials such as photos, color pages, or product manuals)

Emission current: ≥9A, typical value 10A.

Receiving equivalent area: ≥100 m².

Sampling rate: ≥625kHz.

Towing speed range: 6~12km/h.

Protection level: ≥IP57. (Provide supporting materials such as photos, color pages, or product manuals.)

Power supply system

The device comes with one set of its own emission battery pack (12V@200Ah), a lithium-ion battery.

Three chargers, including two main unit chargers and one battery charger.

Mobile power supply: Provides a lithium iron phosphate outdoor power supply with an output of not less than 3500W/220V (including solar panel support for solar charging, not less than 150W, suitable for outdoor power supply and operation). The mobile power supply is required to provide continuous power supply for ≥10 hours.

Communication system

Antenna and main unit connecting cables: 6.

Display and control industrial terminal and data acquisition and processing

Equipped with 32GB of memory and 2TB of solid-state storage, it features an operating system and dedicated data acquisition software.

One set of data acquisition software: multi-channel data acquisition and storage, synchronous display of 5-channel attenuation data, synchronous display of multiple measurement channels, display of map survey lines and positioning information, enabling data acquisition in both single-point and towing modes. (Provide supporting materials such as photos, color pages, or product manuals)

One set of data processing software: capable of multi-channel simultaneous point extraction, single-channel one-dimensional and pseudo-two-dimensional inversion of profiles, and three-dimensional display of multi-channel inversion data.

Towing platform

One (set) towing platform, with the towing platform, towing antenna, host, and self-contained transmitting battery pack able to fit into a space measuring 980mm in length, 530mm in height, and 1190mm in depth. (Provide supporting materials such as photos, color pages, or product manuals)

Technical services and training

Provide interface docking and system integration services for the towing platform and existing comprehensive geophysical exploration vehicles (see attachment for electrical communication and interface schematics), including power supply, towing, communication interface software and hardware adaptation and modification services, adaptation of communication interface RJ45 network interface, towing hook, debugging and compatibility testing of on-board power system to ensure stable operation of the host and terminal; strengthen or modularize the towing system towing device to adapt to on-site geological and environmental conditions.

Provide lifelong free technical services from the date of self-acceptance, including: telephone and remote support (24 hours a day), at least one on-site inspection service per year (a total of no less than 5 times during the promised free maintenance period, including system calibration, functional testing, and maintenance suggestions; establish technical support files to ensure user service records are traceable), fault diagnosis and troubleshooting, lifelong free upgrades and authorized use services for data acquisition and processing software.