In the chemical production process, PLUS electromagnetic flowmeters are gradually replacing traditional models thanks to their insertion design and fluororubber lining advantages. Compared with ordinary electromagnetic flowmeters, insertion-type models such as LDG and HK-LDE are not only more convenient to install and maintain, but also better suited for measuring strongly corrosive media, which is the key reason why chemical companies prefer this type of flow sensor.

I. Definition and Core Advantages of Insertion Electromagnetic Flowmeters

Insertion electromagnetic flowmeters (such as the PLUS series and ZK-LDE series) are measuring devices installed by opening a hole in the side wall of the pipeline so that the probe directly contacts the fluid. Their core advantage lies in the fluororubber lining material, which can withstand strongly corrosive media such as sulfuric acid and hydrochloric acid at concentrations up to 98%, while traditional flanged electromagnetic flowmeters require complete disassembly for maintenance. According to the ISO 9104 standard, the insertion design reduces installation time by 70%, making it especially suitable for retrofit projects on large-diameter pipelines above DN300.

II. Special Requirements for Flow Measurement in the Chemical Industry

Chemical production environments are often accompanied by high temperature, high pressure, corrosive media, and complex fluid compositions. The rubber lining of ordinary electromagnetic flowmeters tends to swell and deform after long-term contact with organic solvents, while the polytetrafluoroethylene (PTFE) lining used in products such as the Magne series can operate stably within the range of -40℃~180℃. A case from a chlor-alkali enterprise shows that after using the HY-LD insertion flowmeter, the number of shutdowns caused by electrode scaling dropped from 12 times per year to 2 times.

III. Comparative Analysis of Technical Parameters

The comparison shows that although the insertion design makes a slight sacrifice in accuracy, its adaptability to large pipe diameters and lower conductivity requirements are more suitable for chemical wastewater treatment scenarios. The W3000 series further innovatively adopts dual-frequency excitation technology, effectively solving the electrode noise problem during slurry measurement.

IV. Selection Guide and Purchasing Recommendations

When selecting an insertion electromagnetic flowmeter, the following should be重点considered:

• Medium characteristics: for corrosive fluids, HHD series models with fluorine lining are preferred
• Installation conditions: for pipelines below DN80, the ZK-LDC compact model is recommended
• Output requirements: when 4-20mA+HART protocol is required, specify the ZYLDE intelligent model

V. FAQ on Common Operational Misunderstandings

Q: Will an insertion flowmeter affect the pressure-bearing capacity of the pipeline?
A: When using the standard 304 stainless steel sealing kit of the HK-LDE series, the pressure rating can reach PN40, fully meeting the requirements of chemical pipelines.

VI. Why Choose Shenghongchuang Instrumentation

As a national high-tech enterprise, the LDG electromagnetic flowmeters we provide have passed SIL2 functional safety certification, and all insertion products are equipped with imported German electrode materials. Our professional technical team can provide one-stop services from selection to installation, with 24-hour response to the urgent calibration needs of chemical enterprises. Contact our engineers now to obtain a customized solution.