An apparatus may include: a body defining a flow path; an inlet to the flow path; an outlet to the flow path; a test coupon at least partially disposed within the flow path; a sealing element disposed between the test coupon and the body; and a current source electrically coupled to the test coupon, wherein the inlet and the outlet are in fluid communication through the flow path, and wherein the sealing element electrically insulates the body and the test coupon.

A corrosion monitoring device includes a sensor assembly and a detector circuit. The sensor assembly includes at least one sensor portion disposed in an interior of a pipe in a fire sprinkler system for sensing corrosion of a wall of the pipe. The detector circuit transmits an electrical signal through the at least one sensor portion, monitors an electrical characteristic of the at least one sensor portion based on the electrical signal, compares at least one of the monitored electrical characteristic and a change in the electrical characteristic of the at least one sensor portion to at least one of a predetermined value and a previously monitored electrical characteristic, determines a corrosion status indicative of at least one of a corrosion level and a rate of corrosion of the pipe wall based on the comparison, and outputs an indication of the corrosion status.

A corrosion testing device comprising a coupon holder for a sucker rod of a pump system and at least one coupon for corrosion testing, wherein the coupon holder comprises a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and the radial surface distance is larger than the radial coupon distance.

The present invention provides a corrosive environment monitoring method capable of short-term to long-term identification of the type of corrosive gas, without requiring a power source such as a commercial power source or a storage battery, in a narrow place inside an equipment housing of an electric or electronic device to be evaluated. The corrosive environment monitoring method of the present invention involves using a corrosion sensor that has a passage structure in which one end is closed and the other end is an opening, wherein a part of the upper and lower surfaces or left and right surfaces with respect to the opening is formed by a transparent substrate, and a metal thin film is formed on the surface of the transparent substrate that is in contact with the corrosive gas flowing in from the opening, observing the degree of discoloration of the metal thin film through the transparent substrate, and identifying the type of the corrosive gas from the relationship between the degree of discoloration and the type of corrosive gas that has been observed in advance.

A corrosion testing device comprising a coupon holder for a sucker rod of a pump system and at least one coupon for corrosion testing, wherein the coupon holder comprises a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and the radial surface distance is larger than the radial coupon distance.

A probe for measuring a cathodic protection condition of a buried steel structure includes: a body; a reference electrode accommodated in an interior of the body; and a volume of backfill accommodated in the interior of the body and at least partially surrounding the reference electrode. The backfill includes at least one of: zinc sulfate (ZnSO.sub.4) and lithium acetate.

An indicator card for determining solderability, oxidation, corrosion and/or reliable operability of semiconductor packages stored in moisture barrier bags is disclosed. The indicator card may include a reactive metal-containing layer on a non-reactive substrate. The reactive metal-containing layer may react with a destructive gas (e.g., an oxidizing gas or corrosive gas) to provide a visual indication of the amount of exposure to the destructive gas has been encountered by a semiconductor package while the semiconductor package is stored in a moisture barrier bag. The visual indication may indicate to a user whether the amount of exposure is above or below an exposure threshold where the exposure threshold differentiates between acceptable and unacceptable levels of exposure related to solderability, oxidation, corrosion and/or reliable operability of the semiconductor package.

A system, apparatus, and method for analyzing cathodic protection (CP) current shielding of a coating are provided. The system includes: a test cell configured to have a coating film disposed therein and to be filled with electrically conductive solution surrounding the coating film; an electrical resistance (ER) probe mounted through a port of the test cell; and a potentiostat configured to: apply potential to the test cell to thereby polarize a sensing element of the ER probe such that the ER probe is configured to measure data indicative of a corrosion rate of the sensing element when the coating film is disposed within the test cell and while a CP current flows through the sensing element; and measure a current density through the sensing element in order to indicate an extent of CP current shielding of the coating film.

The invention is directed to a real-time, zero resistance ammeter (ZRA) galvanic corrosion detection instrument that is adapted to measure corrosion under atmospheric conditions. The instrument may be used in accordance with methods for selecting materials based on environmental conditions and electrolyte chemistries. The electrochemical ZRA test cell of the invention may further be used to determine galvanic corrosion susceptibility, aid in forecasting corrosion, and determine the extent of corrosion based on environmental factors.

Systems and methods for measuring corrosion rate of an equipment material are provided. A system may comprise a corrosion probe body for insertion within an interior of the equipment through which corrodant fluid flows. At least one sensor on the corrosion probe body includes an ultrasonic source configured to provide an ultrasonic signal into the probe body material, and a receiver configured to receive reflections of the ultrasonic signal from the probe body material and generate electrical response signals indicative of the travel time of the ultrasonic signal. A heat exchanger may be placed in fluid communication with the probe body to deliver heated or cooled fluids to the probe body. A processor is configured to process the electrical response signals and produce corresponding corrosion data.