Over the years ACM have built up a collection of test techniques applicable to standard instruments such as Gill 8/AC, or Field Machine:

• AC Impedance (EIS) - a series of sine waves from start to finish frequencies. Potential and galvanic response for each wave is stored, from which Z Real, Z Imaginary, Bode Impedance and Bode Theta are calculated.
• Current & Voltage - continuous measurement of potential and galvanic readings. Maximum read rate is limited by the mains frequency, 50 per second for 50Hz and 60 per second for 60Hz.
• Cyclic Sweep - sweeps between two potentials over a number of cycles, or half cycles.
• Harmonic Analysis - extracts first, second and third harmonics and calculates corrosion rate.
• Potential Measurement & Galvanic Measurement.
• Potentiostatic - hold offset potential and measure current response.
• Galvanostatic - maintain offset current and measure potential response.
• Galvanic Sweep - potential is measured whilst current is swept.
• Linear Polarisation (LPR) - both sweep & step (more resilient) tests available, results plotted as LPR result vs time or corrosion rate
• Voltage Input - measure external potentials, thermocouple inputs can be specified.
• IR Compensation - typically used for measurement of concrete samples or other high impedance samples.
• Weld Testing - many of the standard techniques can be supplied for weld testers, 5 simultaneous weld measurements.

More exotic, or custom created techniques:

• L.C.M.^TM - Localised Corrosion Monitoring developed by Baker Petrolite.
• Custom Sweep - finer control of sweeps, pauses and offsets.
• Multiphase Flow - ACM's own designed technique (Patent No.: GB2365977) for use in multiphase environments.
• Temperature Measurement - Platinum Resistance Thermometers (PRT) give the highest accuracy measurement.
• ER - Electrical resistance, precision measurement of ER probes.
• GPS Positioning - Add-on for field machine to log position, later plotted on a map.
• Critical Pitting Temperature - Details here.
• Current Step Polariser - Define precise current steps whilst potential is measured.
• Heater & Stirrer Control - From within sequencer heaters and stirrers can be controlled.