This report conducts professional testing on the stability of HKTMF electromagnetic flowmeters in high-temperature environments, including performance data of multiple flowmeter models such as TOP-101 and 93718-353. As a professional manufacturer in the field of flow control equipment, Xi'an Shenghongchuang Instrumentation Co., Ltd. has verified through rigorous experiments the reliable performance of HKE, RXLDB and other series products under extreme working conditions, providing authoritative reference basis for technical evaluation personnel.

Challenges of high-temperature environments for electromagnetic flowmeters

In industrial scenarios such as chemical engineering and metallurgy, medium temperatures often exceed 150℃, which poses severe tests to the measurement accuracy and structural stability of equipment such as the 93718-353 electromagnetic flowmeter. Experimental data show that when the ambient temperature rises to 200℃, the electrode polarization error of ordinary electromagnetic flowmeters may increase by 2-3%, while the HKTMF series controls the temperature drift coefficient within 0.05%/℃ through special ceramic lining and alloy electrode design. Referring to the GB/T18659-2018 standard, Xi'an Shenghongchuang's testing team simulated gradient changes from -20℃ to 250℃ in a constant temperature chamber, confirming that the TOP-101-32 electromagnetic flowmeter still maintains an excellent flow indication error level of ±0.5% in the high-temperature range.

Analysis of high-temperature resistance performance of core components

The disassembly test of the 93454-543 electromagnetic flowmeter shows that its key performance depends on three major components:

• Excitation coil: H-class insulated enameled wire is used, and the insulation resistance remains greater than 100MΩ at 220℃
• Measuring electrode: The platinum-iridium alloy material keeps the polarization voltage fluctuation of the JY-LDE model below 5mV
• Signal converter: The RXLDB series has a built-in temperature compensation algorithm, effectively offsetting the impact of thermoelectric effects

In comparative testing, after the 93636-135 electromagnetic flowmeter operated continuously for 500 hours under 180℃ working conditions, the electrode scaling amount was only 1/8 of that of ordinary 316L electrodes, thanks to its mirror polishing process and active electric cleaning function.

Comparative test data for multiple models

Breakthrough in temperature compensation technology

The intelligent temperature compensation system developed by Xi'an Shenghongchuang was verified on the TOP-101-25 electromagnetic flowmeter. The system monitors the medium temperature in real time through a built-in PT1000 temperature sensor, and dynamically adjusts the excitation frequency in combination with a fuzzy PID algorithm. Test data show that in the step response from 150℃ to 220℃, traditional flowmeters require 120 seconds to recover stability, while the HKTMF model equipped with this system only requires 18 seconds, improving response time by 85%. This technology has been successfully applied to the full series of products such as 93454-543 and 93636-135.

Engineering application verification cases

In a residue hydrotreating unit of a petrochemical enterprise, 6 JY-LDE electromagnetic flowmeters have been operating stably for 23 months. On-site data records show:

• The medium temperature has been maintained at 195-205℃ for a long time
• The maximum monthly calibration deviation is 0.3%
• The electrode maintenance cycle has been extended to 3 times that of ordinary models

This case proves the excellent adaptability of the HKE series products in high-temperature, high-viscosity media. It is worth noting that the TOP-101-32 electromagnetic flowmeter shows even better vibration resistance under the same working conditions, which is inseparable from its unique double-shell structure design.

Selection recommendations and maintenance points

For different high-temperature application scenarios, it is recommended that technical evaluation personnel focus on:

1. Temperature gradient: The 93718-353 model is suitable for working conditions with temperature fluctuations ＜5℃/min
2. Medium characteristics: When containing solid particles, priority should be given to the wear-resistant lining of the RXLDB series
3. Installation method: Vertical installation is conducive to bubble discharge of the HKTMF flowmeter

In daily maintenance, it is recommended to check the electrode insulation resistance every 6 months (should be ＞50MΩ), and perform zero-point calibration regularly. For intelligent models such as TOP-101, the temperature compensation parameters can be remotely monitored through the HART protocol.

Summary and technical service support

This report confirms that Xi'an Shenghongchuang's HKTMF, TOP-101 and other electromagnetic flowmeter series can still maintain measurement accuracy within ±0.5% in high-temperature environments through material innovation and intelligent algorithms. As an enterprise certified with both ISO9001/TS16949 certifications, we provide:

• 72-hour high-temperature aging test report
• Customized temperature compensation solutions
• On-site installation and commissioning guidance

Technical evaluation personnel are welcome to request complete test data or schedule an on-site demonstration, and our engineers will match you with the most suitable high-temperature working condition solutions for models such as 93636-135 and 93454-543.