The EMCEE Model 1152 meter consists of an electronics assembly and a detachable stainless steel probe. The probe, which is similar to a capacitor having concentric electrodes, is immersed into the fluid up to the set of holes closet to the electronics assembly. Depressing the “M” pushbutton causes a relatively small direct current to flow through the fluid between the electrodes.

The current is amplified in the electronics assembly and is displayed on the liquid crystal display in picosiemens per meter (pS/m).