Description

Model Selection Table of Corrosion Monitoring Probe

Introduction:

The Corrosion Monitoring Probe (ER) uses a metal sensing element, which is damaged and its geometric dimensions change after being corroded by the medium in the environment of use. Using Ohm’s law, the resistance of metal components is related to their geometric dimensions. By measuring the resistance changes of the components before and after corrosion, combined with the time monitoring of two monitoring readings, the corrosion rate (mm/a) can be calculated. The resolution of a resistance probe is usually one thousandth (1/1000) of the thickness of the probe sensitive element. By selecting a probe with a specific thickness and sensitivity, corrosion rate monitoring can be achieved in different media.

The ER probe metal sensing element can be made in various geometric sizes, thicknesses, and materials, including coil, tube coil, sheet coil, cylinder, spiral, flat head, sheet and other shapes.
Corrosion Monitoring Probe has a wide range of applications and can be used in almost all corrosive media environments. It including gas phase, liquid phase, solid phase, and flowing particulate media. The feedback time of the resistance probe signal is short and the measurement is fast, which can timely reflect the corrosion situation of equipment and pipelines, and keep the internal corrosion of equipment and pipelines under monitoring. Therefore, for areas with severe corrosion, this method is an indispensable monitoring tool.

Shortcoming of Corrosion Monitoring Probe:

However, due to the limitation of instrument measurement resolution, the data obtained is greatly affected by changes in the corrosion rate of the process medium, and the measurement results may sometimes deviate. For the Corrosion Monitoring Probe installed for the first time, it takes about 2 weeks to stabilize before reliable corrosion data can be monitored. At the same time, the Corrosion Monitoring Probe method cannot measure the instantaneous corrosion rate, let alone monitor the local corrosion rate. The smaller the thickness of the probe, the higher the sensitivity and shorter the service life. It is generally used in environments with extremely high precision requirements and relatively weak corrosiveness. When conductive substances (such as sulfide corrosion products) adhere to the surface of components. It can lead to inaccurate measurement of corrosion rates.

For drug evaluation, it cannot respond in a short period of time. Due to the influence of temperature on metal resistance, the data of ordinary resistance probes fluctuates greatly and is unstable. Especially in areas with large temperature differences between morning and evening, such as oceans and desert regions, it is more pronounced. Although temperature compensation samples were used, their response to temperature fluctuations (especially rapid temperature changes) lags behind that of the test samples, which can also introduce measurement errors.

About EMT

Shenyang EMT Piping Technology Co, Ltd. founded in 2004, manufactures and exports all kinds of pipeline pigging products. Today, EMT has become a science and technology development enterprise that combines technological development, production, sales and service together as a whole.
So EMT has insisted on product innovation and customer first, and has developed LCQZ series of pipeline pigs. And pig indicators; SN series of chemical injection quill; corrosion coupon and probe; quick opening closure and other products. Then these products are widely used in oil and gas industry, chemical industry and other fields. And the above products have been used in the projects of CNPC and CNOOC for a long time.
At the same time, EMT actively explores overseas markets. After years of hard work by the team, our products have been exported to more than 50 countries and regions. And our products are also widely praised by foreign customers. And it have established long-term cooperative relations with many overseas oil companies. Which have been widely recognized.