Induced Polarization IP Instrument

An induced polarization IP instrument measures the capacity of subsurface materials to store and release electrical charge when surveyors apply and then remove an external current. This property, called chargeability, varies between rock types, mineral assemblages, and pore fluid compositions. It gives exploration and survey teams subsurface information that standard resistivity instruments cannot provide on their own.

The instrument system consists of a transmitter, a receiver, electrode cables, and current and potential electrodes. The transmitter drives a precisely timed square wave current into the ground through stainless steel or copper electrodes. The receiver records the resulting voltage response at potential electrodes along the survey line. It captures both the resistivity component and the IP component simultaneously, reducing field time compared to running separate resistivity and IP surveys.

Time-domain receivers record voltage decay at defined time windows after current cutoff. They express chargeability in millivolts per volt or milliseconds. Frequency-domain receivers measure phase shift in milliradians and percent frequency effect across multiple transmitted frequencies. Built-in data quality filters reject interference from power lines, pipelines, and nearby electrical infrastructure that commonly contaminate IP data in populated areas of Pakistan.

Multi-channel receiver configurations acquire data from multiple electrode spacings in a single transmission cycle. This speeds up survey coverage on large exploration grids without reducing data density. GPS integration on current systems geotags each measurement automatically for direct import into geophysical interpretation software.

In Pakistan, IP instruments support copper and gold exploration in Balochistan, base metal prospecting in KPK, groundwater salinity mapping in Sindh, and contamination investigations around industrial facilities where subsurface chemistry affects ground electrical properties.

Tactical Supply Pakistan supplies induced polarization IP instruments for mineral exploration, hydrogeological survey, and environmental geophysical investigation across Pakistan.