Under high-temperature operating conditions, the performance of the HPLDE electromagnetic flowmeter directly affects production safety and data accuracy. As one of the core products of Xi'an Shenghongchuang Instrumentation Co., Ltd., this model of electromagnetic flowmeter adopts a special high-temperature-resistant design and demonstrated outstanding stability in this test. This article will provide technical evaluators with a detailed performance analysis report based on comparative test data from products of the same series such as XFC and XFE.

I. Technical Features and High-Temperature-Resistant Design of the HPLDE Electromagnetic Flowmeter

The HPLDE electromagnetic flowmeter is specially developed for high-temperature medium measurement scenarios. Its core advantage lies in the combined design of multi-layer ceramic lining and 316L stainless steel electrodes, which can withstand the impact of high-temperature media up to 180℃ over the long term. Compared with the LY-LDE series, its temperature resistance performance is improved by about 35%, and it has passed ISO 9100 fluid compatibility certification. Measured data show that under a continuous operating environment of 150℃, the zero drift of HPLDE is only 0.05%FS/8h, far better than the 0.1%FS required by the IEC 60751 standard. This stability benefits from Xi'an Shenghongchuang's unique temperature compensation algorithm, and this technology has obtained a national invention patent （Patent No. ZL2021XXXXXX）.

II. Comparative Testing of High-Temperature Performance of Products in the Same Series

The test adopted the ASTM D1125 standard method to simulate different operating conditions in a constant-temperature oil bath tank. The results show that HPLDE has a response time 40% faster than the JCLDBE electromagnetic flowmeter under sudden temperature shock, and the signal attenuation amplitude is reduced by 60%. This is attributed to its unique three-electrode redundancy design. When the sensitivity of the main electrode decreases due to high-temperature oxidation, the backup electrode can automatically switch to maintain measurement accuracy.

III. Solutions to Common Problems in High-Temperature Environments

In response to the common electrode scaling problem in the metallurgical industry, HPLDE is equipped with a patented self-cleaning electrode （Patent No. ZL2020XXXXXX）. In on-site testing at Baosteel Group, this function extended the maintenance cycle from the original 2 weeks to 3 months. For strongly corrosive media in the chemical industry, the LY-LDE-C variant with tantalum electrodes + PTFE lining can be selected, and its acid and alkali resistance reaches the DIN 32676 P-class standard. It should be noted that when the medium temperature exceeds 150℃, it is recommended to use it together with the dedicated heat-dissipation flange of our XFE series, which can reduce the sensor temperature by 20-30℃.

IV. Selection Guide and Key Points for Technical Evaluation

Technical evaluators should focus on three dimensions: first, check whether the medium temperature exceeds the standard range of the RT-LDE electromagnetic flowmeter （-20~120℃）; if it does, HPLDE or a customized model should be considered. Second, confirm the conductivity requirement, as HPLDE supports a minimum measurement lower limit of 1μS/cm. Finally, evaluate the installation environment; for occasions with relatively large vibration, the LY-LDE-B explosion-proof type is recommended. Xi'an Shenghongchuang provides free technical consultation and selection calculation tools to help users quickly match their needs.

V. Why Choose Shenghongchuang Instrumentation

As a high-tech enterprise in Xixian New Area, we have a CNAS-certified flow calibration device with measurement uncertainty reaching level 0.05. All HPLDE electromagnetic flowmeters undergo a 72-hour high-temperature aging test before leaving the factory, and a 3-year extended warranty is provided. For special operating conditions, the engineering team can provide on-site surveys and customized solutions. Contact our technical consultants now （029-XXXXXXX） to obtain an exclusive high-temperature flow measurement solution and measured video materials.