As a core component of flow control equipment, the insertion-type PTFE lining of the TOP-101-32 electromagnetic flowmeter directly affects measurement accuracy and service life. This article focuses on the installation pain points of product series such as HKTMF and JYLDE, providing professional solutions for quality control personnel, project managers, and after-sales teams to help avoid lining damage caused by improper installation.

1. Analysis of Common Causes of Damage to Insertion-Type PTFE Linings

In the practical application of electromagnetic flowmeters, damage to insertion-type PTFE linings often results from improper operation during the installation process. According to after-sales data statistics from Xi'an Shenghongchuang Instrument Co., Ltd., more than 65% of failure cases are related to the following factors:

• Mechanical stress concentration: Failure to align with the pipeline centerline during installation causes one-sided force on the lining
• Sudden temperature changes: Forced installation before reaching the operating temperature causes material embrittlement
• Neglect of chemical compatibility: The medium does not match the corrosion resistance grade of PTFE
• Excessive tightening torque: The use of non-standard tools causes compressive deformation of the sealing surface

Especially for large-diameter models such as 93636-135 and 93718-353, the stress distribution of their lining structure is more sensitive, and installation procedures must be strictly carried out in accordance with the GB/T 18659-2018 standard.

2. Professional Installation Specifications for TOP-101 Series Electromagnetic Flowmeters

2.1 Pre-installation Inspection Key Points

Before installing the TOP-101-32 or TOP-101-25 electromagnetic flowmeter, the following inspections must be completed:

2.2 Key Installation Steps

1. Use dedicated guide fixtures to ensure the coaxiality of the sensor and pipeline (error ≤0.5°)
2. Tighten the bolts in stages: first pre-tighten to 30% of the rated torque, then increase to 80% in a crisscross sequence, and finally apply full torque
3. After installation, a 24-hour empty-pipe vibration test is required (amplitude ≤50μm)

3. Protective Measures Under Special Operating Conditions

For applications of the XDL-DC electromagnetic flowmeter in the following environments, additional protection is required:

• High-pulsation flow fields: Install a pulsation damper (recommended model PD-2000)
• Media containing solid particles: Use a hard alloy protection ring (hardness ≥HRC60)
• Extreme temperature conditions: Gradient heating pretreatment is required before installation (5℃/min)

4. Maintenance and Fault Diagnosis

Regular maintenance can extend the service life of linings for models such as 142654-775:

• Check lining thickness quarterly (using an ultrasonic thickness gauge, attenuation value ＜10%)
• Perform electrode polarization testing annually (refer to IEC 60770-3 standard)
• Shut down immediately when medium penetration is detected (if penetration rate ＞0.1ml/h, the lining must be replaced)

5. Professional Technical Support and After-sales Service

Xi'an Shenghongchuang Instrument Co., Ltd. provides the following for product series such as HKTMF and JYLDE:

• Free on-site installation guidance (including VR remote technical support)
• Free lining replacement service within a 10-year warranty period
• Customized solutions (such as explosion-proof modification for model 93454-543)