+33 2 4794 1000
  • Groundwater & Hydrogeology Surface water - lakes, ponds, rivers Sights and contaminated soil Wastewater sanitation & STEP Coastal & coastline Aquaculture & fish Industry & Process Meteorology

UNPOLARIZABLE ELECTRODES FOR SELF POTENTIALS MEASUREMENTS - PMS 9000

What do I measure ?

The self potential at different soil depths, compared to a reference measure

APPLICATIONS

Geophysics
Geotechnics, water flows in unsaturated soils

Download brochure

This probe derives directly out of the geophysical field. It is new in the AGRONOMICAL and ENVIRONMENTAL research but has been used for 25 years in geophysics with great success. The transfert of this technology allows to use it now in AGRONOMY to study hydric transferts in soils by measuring the self-potentials in these soils.

The PMS 9000 is a reliable probe which can last for about 15 years. These great advantages allow you to use this probe in soil without maintenance, for a high number of measurements once installed.

Example of experimentation in the field. Electrical potential differences are measured between the standard electrode (80cm) and each other electrodes (30, 50 & 70 cm).

Key Advantages

NO WATER
NO MAINTENANCE
15 YEARS OF LIFETIME

TECHNICAL SPECIFICATIONS

Diameter : 32 mm.
Length : 180 mm.
Weight : 250 g.
Value of the polarization on new electrodes : about 0,2mV.
Drift : ? 0.2 mV per month.
Temperature factor : 20 à 30 µV/°C.
Internal resistance (value between 2 electrodes) : ? 500 Ohm.
Maximum pulling weight acceptable on the wire : 15kg.
Lifetime : 10 to 15 years.

Ask for a quotation

Pb/PbCl2,NaCl electrode:
PMS 9000 Qty
Option : also available with KCl electrolyte :
PMS 9000K Qty
Transport case for 48 electrod

The standard set

The PMS 9000 electrode is delivered alone. It is ready to use. A carrying case which can contain up to 48 electrodes can be ordered separately

You also need

. An auger to install the electrodes, ref. Edelman.
. A datalogger to connect the electrodes and record the measurements.