PROTEM-CM

PROTEM-CM

Technical Specifications

Available for SALE

RECEIVER SECTION

MEASURED QUANTITIES
Rate of decay of induced magnetic field along 3 axes

TIME GATES
20 or 30 geometrically spaced gates for each base frequency, range from 6 μs to 800 ms

BASE FREQUENCY
0.3, 0.75, 3, 7.5, 30, 75, 285 Hz, or
0.25, 0.625, 2.5, 6.25, 25, 62.5, 237.5 Hz

DYNAMIC RANGE
29 bits (175 dB) including all gains

SYNCHRONIZATION
Internal terminals provided for cable reference with external transmitters

DATA OUTPUT
RS-232 serial, USB ports

TRANSMITTER SECTION

CURRENT WAVEFORM
Bipolar rectangular current with 50% duty cycle

BASE FREQUENCY
30, 75, or 285 Hz (60 Hz power line frequency)
25, 62.5, or 237.5 Hz (50 Hz power line frequency)

TURN-OFF TIME
2.5 μs at 2 A into 40 x 40 m loop; faster into smaller loop

TRANSMITTER LOOP
Any dimension from 5 x 5 m to 200 x 200 m; multiple-turn loops possible, from 1 x 1 m

OUTPUT VOLTAGE
CM: 0 to 9 V continuously adjustable (at 1 A load), or 24 V
CM HP: 12 to 36 V with external batteries

OUTPUT CURRENT
CM: 3.5 A maximum (7 A pp) with internal battery
CM HP: 11 A maximum (22 A pp) with external batteries

GENERAL

POWER SOURCE
Internal 12/24 V rechargeable lithium-ion battery

BATTERY LIFE
8 h continuous operation with 2 A transmitter current at 12 V output voltage

OPERATING TEMPERATURE
-30°C to +50°C

DIMENSIONS
40 x 35 x 24 cm

WEIGHT
CM: 10.5 kg; CM HP: 11.7 kg

Manufacturer: Geonics

Categories: ,

Description

PROTEM-CM

By consolidating the PROTEM receiver and TEM47 transmitter components into a single console, the PROTEM CM system offers significant improvements in portability and convenience: As compared to the individual receiver and transmitter components, the PROTEM CM is both smaller in size, and less in weight by about half. The increase in component portability will be of particular benefit for surveys in more demanding environments, both in-mine and over rugged terrain.

Available with cable reference synchronization only, for either single component or sequential three-component data collection, the system otherwise offers the same functions and performance characteristics as the standard PROTEM 47 components, and is compatible with all other Geonics transmitters.

For greater depth of exploration, a high power (HP) modification to increase the output current from the transmitter section is available as an option.

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PROTEM-CM