Introduction

In chemical production processes，accurate flow measurement is critical for process control and safe production。With its non-contact measurement，high accuracy，and corrosion-resistant characteristics，the ZK-TDS-100B ultrasonic flow sensor has become an ideal choice for the chemical industry。This article provides an in-depth analysis of application cases of this sensor in 5 typical chemical scenarios，offering valuable reference for technical evaluation personnel。

1. Flow monitoring of strong acid and strong alkali media

Chemical production often involves the transfer and reaction processes of strong acids（such as sulfuric acid，hydrochloric acid）and strong alkalis（such as sodium hydroxide）。Traditional mechanical flowmeters are easily affected by corrosion，resulting in reduced measurement accuracy or even equipment damage。The ZK-TDS-100B adopts a 316L stainless steel housing and PTFE lining design，and achieves non-contact measurement through the ultrasonic transit-time method，maintaining an accuracy of ±0.5% within a pH range of 0-14。After a large chlor-alkali enterprise adopted this model to replace its original electromagnetic flowmeters，annual maintenance costs were reduced by 37%，and unexpected shutdowns caused by electrode corrosion were avoided。

2. Metering for high-viscosity polymer transfer

Polymer materials such as polypropylene and polyethylene can reach viscosities above 5000cP in the molten state，and conventional turbine flowmeters are prone to rotor jamming。The dual-channel ultrasonic design of the ZK-TDS-100B can automatically compensate for changes in fluid viscosity，and combined with a dedicated signal processing algorithm，it realizes dynamic viscosity self-adaptation under 30-150℃ operating conditions。Comparative tests at a chemical fiber manufacturer showed that when conveying PA66 melt，this sensor improved repeatability by 42% compared with gear flowmeters，and completely eliminated metering deviations caused by mechanical wear。

3. Ratio control of flammable and explosive solvents

For the precise ratio control requirements of flammable solvents such as acetone and ethanol，the ZK-TDS-100B features an ATEX-certified flameproof design（Ex d IIC T6 Gb），enabling safe monitoring in explosion-proof areas。Its unique signal gain adjustment function can penetrate media containing bubbles，and in solvent recovery systems，stable readings can still be maintained even when the volume fraction of gas-liquid two-phase fluid reaches 15%。After a coatings plant deployed it in a xylene-methyl ethyl ketone mixing system，the ratio error decreased from ±3% to ±0.8%，significantly improving product batch consistency。

4. Monitoring of high-temperature heat transfer oil circulation

In a 300℃ high-temperature heat transfer oil system，the ZK-TDS-100B is equipped with ceramic probes and a high-temperature isolation module，breaking through the 150℃ temperature limit of traditional ultrasonic sensors。Through a patented temperature-sound velocity compensation algorithm，flow data reliability can still be ensured when thermal degradation of the oil causes changes in physical properties。An application case in a PTA unit showed that after 8000 hours of continuous operation，the sensor drift was only 0.2%，far better than the 1% upper limit required by the API 5.6 standard。

5. Flow statistics for wastewater treatment

Chemical wastewater often contains solid particles and corrosive components。With its IP68 protection rating and self-cleaning probe design，the ZK-TDS-100B can handle harsh operating conditions with SS concentration ≤5%。Its data logging function supports the MODBUS RTU protocol and integrates seamlessly with the plant DCS system。After a pesticide wastewater treatment project used multiple ZK-TDS-100B units to build a monitoring network，real-time traceability of discharge flow was achieved，helping the enterprise save 280000 yuan in compliance costs during the annual environmental protection audit。

Summary of technical advantages

Conclusion and action recommendations

As a core product of Xi’an Shenghongchuang Instrument Co., Ltd.，the ZK-TDS-100B ultrasonic flow sensor has passed ISO 9001:2015 quality management system certification，and all its performance parameters exceed the GB/T 18604-2014 national standard。If you need a model selection方案 for specific operating conditions or on-site test data，please contact our technical team for a customized solution。

Take action now：Call 029-XXXXXXX or visit www.shengtech.com，and our engineers will provide you with professional technical support within 24 hours。