As a professional supplier in the field of flow control equipment, Xi'an Shenghongchuang Instrumentation Co., Ltd. provides you with a detailed explanation of the installation precautions for AKT-LD electromagnetic flowmeters. This article focuses on ZY-LDE, DEC-LD, HD-LD and other series of electromagnetic flowmeters, with an emphasis on the correct installation methods for liquid flow sensors and water flow transmitters, helping commercial evaluation personnel avoid 90% of common issues and ensuring that key components such as insertion-type PTFE rubber linings deliver optimal performance.

I. Key Preparations Before Electromagnetic Flowmeter Installation

Before installing the AKT-LD electromagnetic flowmeter, a comprehensive assessment of the piping system must be carried out. First, it is necessary to confirm the compatibility between the pipe material and the flowmeter lining material, especially for models such as ZY-LDE and DEC-LD with PTFE rubber linings, which must avoid direct contact with strong acid and strong alkali media. Secondly, the pipe diameter should strictly match the nominal diameter of the flowmeter, and any deviation exceeding ±5% will lead to reduced measurement accuracy. According to ISO 9104 standards, it is recommended to reserve straight pipe sections of at least 5 times the pipe diameter upstream and downstream of the flowmeter to eliminate turbulence interference. The engineering team of Xi'an Shenghongchuang Instrumentation Co., Ltd. has found that 80% of on-site faults originate from non-standard piping configurations.

II. Technical Key Points for Insertion-type Installation

For insertion-type models such as the HD-LDE electromagnetic flowmeter, special attention must be paid to the positioning accuracy of the sensor probe. According to the requirements of GB/T 18659-2018, the probe should be installed within ±10° of the horizontal centerline of the pipeline, and the insertion depth should reach 1/8~1/4 of the inner diameter of the pipe. The following misunderstandings are common in actual operation: 1) using non-specialized drilling tools resulting in poor sealing; 2) failing to perform zero-point calibration after installation; 3) neglecting the equipotential connection of the grounding ring. We recommend using a matching 304 stainless steel mounting base and regularly checking the aging condition of the O-ring seal.

III. Special Handling of Liquid Flow Sensors

When the AKT-LD electromagnetic flowmeter is used for corrosive media measurement, maintenance of the PTFE rubber lining is particularly critical. Field data shows that under operating conditions with pH values ＜2 or ＞12, the lining thickness should be inspected at least twice a year. For fluids containing solid particles, a filter of 100 mesh or above should be installed upstream of the flowmeter to prevent electrode wear. Xi'an Shenghongchuang's HD-LD series adopts special hardened electrode technology, which can extend service life to 2.3 times that of ordinary models, significantly reducing life-cycle costs in commercial evaluations.

IV. Signal Processing of Water Flow Transmitters

The 4-20mA output signal of the DEC-LD electromagnetic flowmeter is susceptible to electromagnetic interference. Our tests show that unshielded cables may produce an error of ±0.5% within a transmission distance of 30 meters. The solutions include: 1) using double-shielded cables; 2) maintaining a distance of ＞15cm between signal lines and power lines; 3) installing a signal isolator at the control end. The table below compares the performance under different protection levels:

V. Why Choose Xi'an Shenghongchuang

As a national high-tech enterprise, we hold 18 patents related to electromagnetic flowmeters, and all products have passed CE and RoHS certification. Our 20000㎡ production base located in Xixian New Area is equipped with a fully automatic calibration system, ensuring that the factory accuracy of products in the ZY-LDE, AKT-LD and other series reaches ±0.3%. In response to common questions in commercial evaluations, we provide: 1) free on-site survey services; 2) 3D installation simulation demonstrations; 3) a 5-year extended warranty commitment. Contact our technical consultants now to obtain customized flow solutions.