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Probes

CORROSOMETER® probes and instruments determine metal loss from corrosion or erosion by the electrical resistance method. This method may be used in virtually any environment except liquid metals or some conductive molten salts.

CORROSOMETER® instruments directly measure the metal loss on CORROSOMETER® probes. Plotting metal loss as a function of time permits corrosion rate to be determined. The slope of the curve represents the average corrosion rate over the selected interval. There are a wide variety of CORROSOMETER® probes to match various applications. 

In general the CORROSOMETER® probes have sensing elements made of the metal or alloy for which corrosion data is required. The probe bodies may be of the same alloy, but thicker, or of a higher, less corrosive alloy. 

Fixed
Fixed
Fixed electrical resistance (ER) probes which are not removable under system pressure are sometimes used for reasons of economy or special process limitations. These ER probes may be mounted with a flange or NPT threaded connection. NPT connections are available with fixed or adjustable ... [more]
Retractable
Retractable
Retractable process electrical resistance (ER) probes are introduced into the system through a stuffing box mounted external to a valve. A specially-designed retracting device is available for insertion or removal of probes at pressures too high to permit safe operation by hand (above ... [more]
Retrievable
Retrievable
Retrievable process electrical resistance (ER) probes are sealed into the system in a COSASCO® access fitting. A separate COSASCO® service valve and retriever is used for insertion and removal of the ER probes under system pressures.  
Temperature
Temperature
Temperature is one of the most important controllable factors affecting corrosion rate, particularly in refineries, chemical and petrochemical process plants. A rule of thumb is that corrosion rates double for each 10 degrees C temperature ruse. The ability to track temperature and corrosion rate ... [more]
Underground
Underground
Underground CORROSOMETER® ER probes are designed for underground and structural monitoring of pipelines, vessels, above and below ground storage tanks and structures — whether cathodically protected or not. The Model 620HD ER probe is a heavy duty assembly with a check element which is ... [more]
Atmospheric
Atmospheric
Atmospheric Corrosion Sensors monitor the corrosivity of the air in plant control rooms, in motor control centers, near exhaust stacks and in other environmental monitoring applications. They are available in two ranges with spans of 250Å and 2500Å. Since an accurate corrosion rate ... [more]
Accessories
Accessories
CORROSOMETER® and CORROTEMP® CORROSOMETER® probes are designed for safe installation and operation in various environments. Certain accessories are required based on pressure, temperature, etc., including probe element shields, retractable probe safety clamps, intrinsic safety ... [more]
 

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