Corrosion probes, corrosion coupons and corrosion coupon holders are corrosion-sensing devices that interface to instruments or monitors. This category also includes holders or access units for placing the probe or coupon within the process stream or corrosion system. Corrosion-sensing devices are necessary for detecting and measuring corrosion in manufacturing machinery, batteries and fuel cells, and field equipment. Corrosion is a chemical or electrochemical reaction between a metal and its environment.
Corrosion probes, corrosion coupons and corrosion coupon holders are used in conjunction with non-destructive testing equipment or NDT equipment. NDT testing typically involves detecting internal corrosion and corrosion thickness and is conducted without destroying the sample or product. Corrosion probes, coupons, and holders are used to detect the corrosion rate of specific metals to determine how much metal weight is lost to corrosion in a particular amount of time. NDT inspection allows manufacturers to monitor the amount of corrosion in their products and correct the problems in the factory.
Corrosion probes, corrosion coupons and corrosion coupon holders include devices that can detect the rate of corrosion in a variety of environments. A digital transmitter can be used as an NDT sensor in environments that are electrically hazardous to monitor corrosion rate and pitting tendency in water systems. Another type of NDT instrument probe is an environmental condition monitor that measures humidity, temperature, and the rate of corrosion using thin-film copper and silver sensors that can be replaced in the probe. Corrosion probes, coupons, and holders can also provide on-board datalogging for analysis on a PC. Other types of corrosion probes, coupons, and holders can provide real time corrosion and temperature data. These devices consist of a wireline running tool and probe element that is typically made of carbon steel that can be dropped into an oil or gas well. An ultrasonic NDT sensor is a common device that is also used to detect flaws and cracks in pipes as well as corrosion.
Corrosion probes, corrosion coupons and corrosion coupon holders can be used in deep core oil and gas drilling. These corrosion-detecting devices are used to monitor the amount of internal corrosion in oil tanks, platform pipes, and deep core or subsea pipes, and can also be used to monitor erosion or abrasion due to sand or saltwater.