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TEM 57 Mid-Range
Transmitter
Features
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Sound the depth, thickness and
conductivity of layers down to 300m below the
surface.
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Used for applications such as
mapping the thickness of aquifers, clay layers and
assessing water quality.
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Defines the depth to saline
intrusion as accurately as chemical samples from
wells.
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Can delineate complex ore
bodies within 200m of the surface.
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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. |
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