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Lippmann - Model hp -4 Point Light Earth Resistivity Meter

FromSchwab Research Technology - Lippmann Geophysical Instruments (LGM))

The earth resistivity meter 4point light hp is a geoelectrical instrument to determine induced polarization (IP) with adequate power to drive Schlumberger soundings up to L/2 = 1000 m.

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earth resistance meter

earth resistivity meter

Fast mapping function for archeological measurements (like GeoScan RM4/RM15)
Memory for more than 16.000 measured values
Full remote control
Galvanically isolated interface
Induced polarization
Quick charge of internal batteries (3 h)
Various automatic functions for mapping and sounding
Determination of frequency dependence of resistivity
Spectral IP
Phase resolution up to 0.05 mRad
Automatic trigger for mapping
Complete calibration possible at an internal reference resistor
Interface for active electrodes
Determination of the statistical measurement errors
Direct calculation or rho-s for Wenner, Schlumberger, Schlumberger/2 Pole-Pole, Dipole-Dipole

Size : 25 x 12 x 5 cm
Weight : 750 g including batteries!!
(for comparison: Terrameter SAS-1000: 5 kg, AGI MiniSting: 6.6 kg)
Frequency : 1.08 - 10 Hz
Output current : 380 V p-p
Output voltage : 100 nA ... 50 mA
Resolution : 50 nV
Phase resolution up to 0.05 mRad
24Bit AD-Converter
Accuracy : 0.2 %
Display : 4 x 20 digit LCD
In-Phase/Out-of-Phase-Display
Velocity : 1.5-2 sec/measured value

Lippmann - Model hp -4 Point Light Earth Resistivity Meter

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