Home Products Rentals Services Case Histories Contact  
Airborne Surveying Systems
Borehole Logging Systems
Earthquake Detection & Vibration Monitoring
Electromagnetic Systems
Environmental, Engineering & Archaeology
Ground Penetrating Radar
Induced Polarization Systems
Magnetic Susceptibility Meters
Magnetometers
Marine Systems
Physical Properties
Proton Magnetic Resonance
Radiation Detection
Resistivity Meters
Seismic Equipment
Software
UXO Detection
XRF

TEM 57 Mid-Range Transmitter
  BACK



Features
  • Sound the depth, thickness and conductivity of layers down to 300m below the surface.
  • Used for applications such as mapping the thickness of aquifers, clay layers and assessing water quality.
  • Defines the depth to saline intrusion as accurately as chemical samples from wells.
  • Can delineate complex ore bodies within 200m of the surface.
  • Modeling provides conductivity thickness, dip and extent of the ore body.


General

The TEM57-MK2 transmitter is the upgraded version of the TEM57, and combined with the Protem receiver are the principal components of Protem 57-MK2 systems. The design and performance of the Protem 57-MK2, with its increased power of 1,500 W from an internal power supply,  makes it a highly portable, powerful mid-range time domain transmitter. The internal power supply has variable voltage range from 18 to 60 volts so that it can be perfectly matched to the transmitter loop for optimum performance. An external battery supply increases theis capability to 3,800 W.

Power is supplied to the TEM57-MK2 from either a 6.00W generator or by rechargeable batteries in a backpack. Protem 57-MK2 systems are synchronized by either reference cable or quartz crystal. Synchronization is usually determined by the size of the loop and if the unit is being used for large loop soundings or profiling.

The Protem 57-MK2 is the perfect mid-range power transmitter for sounding depth, thickness and conductivity of layers down to 500 m for a wide variety of applications such as mapping the thickness of aquifers, aquitards, water quality and stratigraphy. In coastal areas, the Protem 57-MK2 has defined the depth to saline intrusion as accurately as chemical samples from wells.

The Protem 57-MK2, with a short reference cable, portable transmitter and 3-D receiver coil, can delineate complex ore bodies within 200m of the surface. Deeper conductors can be characterized by profiling with a synchronized receiver and a large, fixed transmitter loop. Modeling provides conductivity thickness, dip and extent of the ore body.

Specifications

Frequency:
3, 7.5 or 30Hz (powerline frequency 60Hz)
2.5,6.25 or 25Hz (powerline frequency 50Hz)
1 Hz available from PROTEM receiver through reference cable

Tranamitter Loop:
Single Turn: Any dimension (minimum resistance = 10) up to 300x600m
Eight Turn: 5x5 or 10xl0m

Synchronization:
Reference cable
Optional quartz crystal

Power Supply:
1,000W 110/220V, 50/60 (Hz single-phase motor-generator)
Optional 12V rechargeable battery
Current Waveform: Bipolar rectangular current with 50% duty cycle
Rates Below lHz: Available from Protem receiver through reference cable
Turn-Off Time: 20 to 115ms, depending on size, current and number of turns in transmitter loop
Output Current: 25 A maximum
Output Voltage: 18 to 60V continuous control with motor generator, up to 3,800 W with external battery supply
Transmitter Protection: Electronic and electromechanical protection against short circuit
Transmitter Size: 43 x 25 x 25cm
Transmitter Weight: 15kg
Motor-Generator Size: 44 x 32 x 21cm
Motor-Generator Weight: 21kg

Standard Components
Transmitter, shipping case and instruction manual.