The TB4042 conductivity cell expands the advancements in process conductivity measurement initiated by ABB with four-electrode conductivity measurement.
Unlike four-electrode sensors, toroidal sensors have no electrodes.
The TB4042 toroidal conductivity cell provides a means for measuring solution conductivity in chemically aggressive solutions that corrode, foul, or otherwise destroy, electrode-type sensors.
The sensor itself comprises two wound toroids encapsulated in a chemically resistant non-conductor made of polyetherether ketone (PEEK).
Measurement is made inductively via a magnetic coupling between the solution and the toroids.
Because measurement is made inductively and there are no electrodes that can be affected by erroneous resistances from foulants or coatings, these sensors are virtually impervious to all but thick layers of foulants.
Features
Greatly reduces coating and other fouling problems
inductive measurement technique yields a solution conductivity measurement virtually unaffected by solution contaminants
Multi-range capability
measures from 400 µS/cm to 2,000 mS/cm
Versatile mounting
hardware for submersion, 1½ in In-line and low and high pressure ball valve insertion
Automatic temperature compensator with fast thermal response
Small size with large center bore
enables 1½ in mounting, yet center bore is 50 % larger than comparatively sized sensors
PEEK encapsulation
assure chemical resistance and durability
High pressure and temperature ratings
up to 200° C (392° F), 2,070 kPag (300 psig) depending on mounting hardware and materials
316 stainless steel, Kynar®, titanium and CPVC hardware